Toshiba MMK-AP0243H, MMK-AP0123H, MMK-AP0073H, MMK-AP0183H, MMK-AP0093H DATA BOOK

...

SERVICE MANUAL

FILE NO. SVM-09059

MMK-AP0073H (IN) MMK-AP0093H (IN) MMK-AP0123H (IN) MMK-AP0153H (IN) MMK-AP0183H (IN) MMK-AP0243H (IN)

• This Service Manual describes contents of the new High Wall indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A03-009, A05-004, A05-015.

• The service parts will be supplied by TCTC.

PRINTED IN JAPAN, Dec.,2008 ToMo

CONTENTS

SAFETY CAUTION ............................................................................................ 3

1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)......................................... 8

2. WIRING DIAGRAM..................................................................................... 9

3. PARTS RATING ........................................................................................ 10

4. REFRIGERATING CYCLE DIAGRAM...................................................... 40

5. CONTROL OUTLINE................................................................................ 41

6. APPLIED CONTROL................................................................................ 48

7. TROUBLESHOOTING .............................................................................. 55

8. CONFIGURATION OF CONTROL CIRCUIT .......................................... 129

9. HO W TO REPLACE MAIN P ARTS.......................................................... 131

10. REPLACEMENT OF SERVICE INDOOR P.C. BOARD .......................... 139

11. EXPLODED VIEWS AND PA RTS LIST .................................................. 144

SAFETY CAUTION

The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents,

and keep them.

WARNING

Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.

Check earth wires.

Prohibition of modification.

Use specified parts.

Do not bring a child

close to the equipment.

Insulating measures

No fire

If the earth wire is not correctly connected, contact an electric engineer for rework.

Do not modify the products.

Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury.

For spare parts, use those specified (

If unspecified parts are used, a fire or electric shock may be caused.

∗: For details, refer to the parts list.

Before troubleshooting or repair work, do not bring a third party (a child, etc.) except the repair engineers close to the equipment.

It causes an injury with tools or disassembled parts. Please inform the users so that the third party (a child, etc.) does not approach the equipment.

Connect the cut-off lead cables with crimp contact, etc, put the closed end side upward and then apply a water-cut method, otherwise a leak or production of fire is caused at the users’ side.

When repairing the refrigerating cycle, take the following measures.

1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire.

2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide poisoning may be caused.

3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the inflammables.

∗∗

∗).

∗∗

Refrigerant

Check the used refrigerant name and use tools and materials of the parts which match with it.

For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service por t is changed from one of the former R22.

For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which uses other refrigerant (R22, etc.), never use R410A.

If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an injury due to breakage may be caused.

Do not charge refrigerant additionally.

If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over the specified standard amount is charged and an abnormal high pressure is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury.

Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time, never charge the refrigerant over the specified amount.

When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other than R410A into the specified refrigerant.

If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle resulted in cause of injury due to breakage.

After installation work, check the refrigerant gas does not leak.

If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

Never recover the refrigerant into the outdoor unit.

When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as breakage or injury is caused.

Assembly/Cabling

Insulator check

Ventilation

Be attentive

to electric shock

Compulsion

WARNING

After repair work, surely assemble the disassembled parts, and connect and lead the removed cables as before. Perform the work so that the cabinet or panel does not catch the inner cables.

If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or fire is caused at user’s side.

After the work has finished, be sure to use an insulation tester set (500V megger) to check the resistance is 2MW or more between the charge section and the non-charge metal section (Earth position).

If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.

When the refrigerant gas leaks during work, execute ventilation.

If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to execute ventilation.

When checking the circuit inevitably under condition of the power-ON, use rubber gloves and others not to touch to the charging section.

If touching to the charging section, an electric shock may be caused.

When the refrigerant gas leaks, find up the leaked position and repair it surely.

If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room.

The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous.

When installing equipment which includes a large amount of charged refrigerant such as a multi air conditioner in a sub-room, it is necessary that the density does not the limit even if the refrigerant leaks.

If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused.

For the installation/moving/reinstallation work, follow to the Installation Manual.

If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.

Check after rerair

Check after reinstallation

Put on gloves

Cooling check

After repair work has finished, check there is no trouble.

If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off the power breaker.

After repair work (installation of front panel and cabinet) has finished, execute a test run to check there is no generation of smoke or abnormal sound.

If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel and cabinet.

Check the following items after reinstallation.

1) The earth wire is correctly connected.

2) The power cord is not caught in the product.

3) There is no inclination or unsteadiness and the installation is stable. If check is not executed, a fire, an electric shock or an injury is caused.

CAUTION

Be sure to put on gloves (*) and long-sleeved shirt during repair work.

If not putting on gloves, an injury may be caused with the parts, etc.

(∗) Heavy gloves such as work gloves

When the power was turned on, start to work after the equipment has been sufficiently cooled.

As temperature of the compressor pipes and others became high due to cooling/heating operation, a burn may be caused.

• New Refrigerant (R410A)

This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer.

1. Safety Caution Concerned to New Refrigerant

The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into

the refrigerating cycle of the air conditioner with new refrigerant during installation work or service work. If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident. Use the tools and materials exclusive to R410A to purpose a safe work.

2. Cautions on Installation/Service

(1) Do not mix the other refrigerant or refrigerating oil.

For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of the former refrigerant in order to prevent mixture of them.

(2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools

which are specified for R410A.

(3) In the installation time, use clean pipe materials and work with great attention so that water and

others do not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc. Use the clean pipes.

Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.) (4) For the earth protection, use a vacuum pump for air purge. (5) R410A refrigerant is azeotropic mixture type refrigerant.

Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the

refrigerant changes and then characteristics of the air conditioner change.)

3. Pipe Materials

For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate pipes to conform to the standard. Use clean material in which impurities adhere inside of pipe or joint to a minimum.

(1) Copper pipe

The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type. When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe

without seam” and one with bonded oil amount 40mg/10m or less. Also do not use crushed, deformed, discolored (especially inside) pipes. (Impurities cause clogging of

expansion valves and capillary tubes.)

Use the flare nuts which are attached to the air conditioner unit.

(2) Joint

The flare joint and socket joint are used for joints of the copper pipe.

The joints are rarely used for installation of the air conditioner.

However clear impurities when using them.

4. Tools

(1) Required T ools for R410A

Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of

capillary, etc. Accordingly, the tools to be used are classified into the following three types.

1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

3) Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

No.



















Used tool

Flare tool Copper pipe gauge for

adjusting projection margin Torque wrench Gauge manifold Charge hose Vacuum pump adapter Electronic balance for

refrigerant charging Leakage detector Charging cylinder

Usage

Pipe flaring Flaring by conventional

flare tool Connection of flare nut

Evacuating, refrigerant charge, run check, etc.

Vacuum evacuating

Refrigerant charge

Gas leakage check Refrigerant charge

air conditioner installation

R410A

Existence of Whether new equipment conventional equipment for R410A can be used

Yes ∗(Note 1)

Yes No

Yes Yes

Yes No

(Note 2) No

Conventional air

conditioner installation

Whether new equipment can be used with conventional refrigerant

Yes

∗(Note 1)

Yes

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection

margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2) Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which ser ve also for R22 are necessary as the general tools.

1) Vacuum pump Use vacuum pump by attaching vacuum pump adapter.

2) Torque wrench

3) Pipe cutter

4) Reamer

5) Pipe bender

6) Level vial

8) Spanner or Monkey wrench

9) Hole core drill

10) Hexagon wrench (Opposite side 4mm)

11) Tape measure

12) Metal saw

7) Screwdriver (+, –)

Also prepare the following equipments for other installation method and run check.

1) Clamp meter

2) Thermometer

3) Insulation resistance tester

4) Electroscope

5. Recharge of Refrigerant

When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below.

Recover the refrigerant and check there is no refrigerant in the equipment.

Connect the charge hose to the packed valve service ports at gas side, liquid side, and balance side of the outdoor unit.

Connect the charge hose to vacuum pump adaptor.

Open the packed valves of the balance pipe fully at liquid and gas sides, and then return the valve at gas side a little to the closed side.

Open fully PMV of the outdoor unit.

• Turn on power of the outdoor unit.

• Short CN30 on I/F P.C. board of the outdoor unit.

•

Turn off power of the outdoor unit within 2 minutes after short-circuiting.

When the pressure has lowered until indication of the compound gauge pointed -0.1MPa (–76cmHg), open fully the handle Low and turn off the power of vacuum pump.

Leave it as it is for 1 to 2 minutes and check the indicator of the compound gauge does not return.

Set the refrigerant cylinder on the electron balance, connect the charge hose to connecting ports of the cylinder and the electron gauge, and then charge the liquid refrigerant from the service port at liquid side. (Shield with the gauge manifold so that refrigerant does not flow to gas side.)

(Charge the refrigerant as below.)

Low-

pressure gauge

High-

pressure gauge

Open fully the handle Low of the gauge manifold, and then turn on the power of vacuum pump for vacuuming.

1) Ne ver charge the refrigerant over the specified amount.

2) Do not charge the additional refrigerant.

Connected to indoor unit

Main pipe

Brazed

Fully tightened

Valve fully closed (gas side)

Center unit

Service port

Copper pipe

Service port

Connected to other terminal units

Valve fully closed (liquid side)

applied to the inside of the refrigerating cycle resulted in cause of breakage or injury.

4mm-hexagonal wrench is required.

1) Set the equipment so that liquid refrigerant can be charged.

2) When using a cylinder with siphon pipe, liquid can be charged without inversing the cylinder.

[ Cylinder with siphon ] [ Cylinder without siphon ]

Gauge manifold

OUTDOOR unit

Gauge manifold

OUTDOOR unit

Ø6.4

Siphon

VLV

Reducing valve

Ø6.4 Copper pipe

Gauge manifold

Nitrogen

gas

cylinder

Refrigerant

cylinder

Electronic

balance

Electronic

balance

Refrigerant

R410A refrigerant is consisted with HFC mixed refrigerant. Therefore if the refrigerant gas is charged, the composition of the charged refrigerant changes and characteristics of the equipment changes.

6. Environment

Use “Vacuum pump method” for an air purge (Discharge of air in the connecting pipe) in installation time.

• Do not discharge flon gas into the air to protect the earth environment.

Using the vacuum pump method, clear the remained air (Nitrogen, etc.) in the unit. If the air remains, the pres-

•

sure in the refrigerating cycle becomes abnormally high and an injury and others are caused due to burst.

1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

1-1. Indoor Unit

Model:

MMK-AP0073H (IN), MMK-AP0093H (IN), MMK-AP0123H (IN), MMK-AP0153H (IN), MMK-AP0183H (IN), MMK-AP0243H (IN)

1050

Front panel

73.5 7

Knock out system Knock out system

320

Air filter

Air inlet

Heat exchanger

Installation plate hanger

72 78

228

73.5

204

132 568 200 150

Installation plate hanger

Connecting pipe (0.39m)

(07, 09, 12 series; 9.5mm

15, 18 series; 12.7mm

24 series; 15.9mm)

132 786

320

Drain hose (0.5mm)

235 215 215

Hanger

56 24

Wireless remote controller

163

82 26

Remote controller holder

Connecting pipe (0.44m)

(07, 09, 12 series; 6.4mm

15, 18 series; 6.4mm

24 series; 9.5mm)

132

235

Hanger

47 215.5 262.5 262.5 153.5 109

Center line Instrallation plate outline

Hanger

2. WIRING DIAGRAM

Model: MMK-AP0073H (IN), MMK-AP0093H (IN), MMK-AP0123H (IN),

MMK-AP0153H (IN), MMK-AP0183H (IN), MMK-AP0243H (IN)

GRN & YEL

RED

exchanger

CN67 (BLK)

WHI

CN309

(YEL)

Heat

1 3

1 3 5

CN22

F301, Fuse

T3.15A

250V~

CN81 (BLK)

YEL

WHI

BRW

Flow selector unit

(Sold separately)

BLK

5432131 54321

PNK

GRY

54321

Pulse motor valve

HBS

1 2 3 4 5 6 5 4 3 2 1

CN50 (WHI)

CN213

(WHI)

654321

BLU

(MCC-5044)

45678 23 456789 2 13

1110

Infrared rays receive

and Indication parts

BLU

RED

BRW

6 5 4 3 2 1

CN82 (BLU)

987

98732

WHI

BLU

Fan

motor

ORN

YEL

WHI

YEL

BLK

WHI

BLU

6 5 4 3 1 6 5 4 3 1

CN210

(WHI)

Control P.C. board

for indoor unit

(MCC-1510)

CN32 (WHI)

Fan

drive

CN61 (YEL)

4321

RED

654321

Louver motor

5 4 3 2 1

YEL

WHI

6 5 4 3 2 6 5 4 3 2 1 1

Power supply circuit

CN60 (WHI)

CN44

(BRW)

DC15V DC0V DC12V DC7V

CN80

(GRN)

PNL/EMGOption

2 CN40

(BLU) CN41

(BLU)

CN100 (BRW)

CN101

(BLU)

CN103

(GRN)

CN102

(YEL)

CN104

(WHI)

32165432165432121

BLU

1 1

BLU

2 2

BLK

3 3 2

WHI

1 1

Heat exchanger sensor

(TC1)

BLK

1 1 2

BLK

3 3

Heat exchanger sensor

(TC2)

BLK

1 1

BLK

Heat exchanger sensor

(TCJ)

BLK

1 1

BLK

2 2

Thermo sensor

BLK

2 2

U1 U2

(TA)

Outdoor unit

U1 U2

B A

WHI BLK

1 2 1 2

CN1

(WHI)

Wired remote controller (Sold separately)

GRN & YEL

R(L)

S(N)

Power supply single phase

220–240V, 50Hz

220V, 60Hz

1. indicates the terminal block. Letter at inside indicates the terminal number.

2. A dotted line and broken line indicates the wiring at site.

3. indicates the control P.C. board.

Color identification

BRW : BROWN

RED : RED

WHI : WHITE YEL : YELLOW BLU : BLUE

BLK : BLACK GRY : GRAY PNK : PINK

ORN : ORANGE

GRN & YEL: GREEN & YELLOW

GRN : GREEN

3-1. Parts Rating

3. PARTS RATING

No.

2 3 4 5 6 7

Fan motor (for indoor)

Grille motor Thermo. Sensor (TA sensor) Heat exchanger sensor (TC1 sensor) Heat exchanger sensor (TC2 sensor) Heat exchanger sensor (TCJ sensor) PMV motor

Parts Name

3-2. Name of Each Part

Type

ICF-340-30-4

MF-340-30-1RT

MP24Z3T

318mm Ø4,600mm Ø6,800mm Ø6,800mm

EDM-MD12TF

Specications

Output (Rated) 30W, 280-340V DC

Output (Rated) 1W, 16 poles DC 10kΩ at 25°C 10kΩ at 25°C 10kΩ at 25°C 10kΩ at 25°C 12V DC

Model: MMK-APXXX3H

Air outlet / Louver

Change the direction of the air to be discharged according to cool/heat mode.

Air filter

Removes dirt or dust. (Provided in the air inlet grille)

Air inlet grille

Air in the room is sucked from here.

Earth screw

Earth screws are provided in the electric parts box.

3-3. Parts Name of Remote Controller

n Display section

In the display example, all indicators are displayed for the explanation. In reality only, the selected contents are indicated.

• When turning on the main power switch and leak breaker at the first time,

• While this display is flashing, the model is being automatically confirmed.

Accordingly, wait for a while after then use the remote controller.

flashes on the display part of the remote controller.

SETTING

display has disappeared, and

SETTING

20 19

Display section

TEMP.

TIMER SET

TEST

TIME

SET

FILTER RESET

This remote controller can control the operation of Max. 8 indoor units.

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

Operation section

1 SETTING display

Displayed during setup of the timer etc.

2 Operation mode select display

The selected operation mode is displayed.

3 CHECK display

Displayed while the protective device works or a trouble occurs.

4 Timer time display

Time of the timer with H mark is displayed. (When a trouble occurs, the check code is displayed.)

5 Timer SET IN setup display

When pushing the Timer SET IN button, the display of the timer is selected in order of [OFF] → [OFF] repeat OFF timer → [ON] → No display.

6 Filter display

If “FILTER ” is displayed, clean the air filter.

7 TEST run display

Displayed during a test run.

8 Louver position display

(4-way Air Discharge Cassette, 2-way Air Discharge Cassette, 1-way Air Discharge Cassette, Under Ceiling and High Wall Type only (2H. 3H))

Displays louver position.

9 SWING display

Displayed during up/down movement of the louver.

10 Set up temperature display

The selected set up temp. is displayed.

11 Remote controller sensor display

Displayed while the sensor of the remote controller is used.

12 PRE-HEAT display (Heat-pump model only)

Displayed when the heating operation starts or defrost operation is carried out.

While this indication is displayed, the indoor fan stops or the mode enters in LOW.

13 No function display

Displayed if there is no function even if the button is pushed.

8 1

20 19

14 Air volume select display

The selected air volume mode is displayed.

(AUTO) (HIGH) (MED.) (LOW)

15 Louver Number display

(exapmle:01, 02, 03, 04)

16 Operation ready display

Displayed when cooling or heating operation is impossible because the outdoor temperature goes out of the operable range.

17 Mode select control display

Displayed when pushing “Operation mode select ” button while the operation mode is fixed to heating or cooling by the system manager of the air conditioner.

18 Louver lock display

(4-way Air Discharge Cassette Type 2H series only)

Displayed when there is a louver-locked unit in the group (including 1 indoor unit by 1 outdoor unit).

19 Unit Number display

Unit number of the indoor unit selected with the unit select button or abnormal indication of the indoor/outdoor unit.

20 Central control display

Displayed when the air conditioner is used under the central control in combination with a central control remote controller.

In case the remote controller is disabled by the central control system, flashes.

The button operation is not accepted. Even when you push ON/OFF, MODE, or

TEMP. button, the button operation is not accepted. (Settings made by the remote controller vary with the central control mode. For details, refer to the Owner’s Manual of the central control remote controller.)

n Operation section

UNIT LOUVER

Push each button to select a desired operation.

• The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing

ON / OFF

button only.

2 5

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

FAN

1 2

5 6 7

8 Operation lamp

button (Air volume select button)

Selects the desired air volume mode.

TIMER SE

button (Timer set button)

TIMER SET button is used when the timer is set up.

TEST

button (Check button)

The CHECK button is used for the chec k oper ation. During normal operation, do not use this button.

VENT

button (Ventilation button)

Ventilation button is used when a fan which is sold on the market is connected.

• If “No function ” is displayed on the remote controller when pushing the Ventilation button, a fan is not connected.

FILTER RESET

button (Filter reset button)

Resets (Erases) “ FILTER” display.

SAVE

button (Power save operation)

No function

SWING/FIX

button (Swing/Wind direction button)

Selects automatic swing or setting the louver direction.

• This function is not provided to Concealed Duct Standard Type, High Static Pressure Type, Floor Standing Cabinet Type, Floor Standing Concealed Type or Slim Duct Type.

Lamp is lit during the operation. Lamp is off when stopped. Also it flashes when operating the protection

device or abnormal time.

VENT

ON / OFF

When the button is pushed, the operation starts, and it stops by pushing the button again. When the operation has stopped, the operation lamp and all the displays disappear.

OPTION :

Remote controller sensor

Usually the TEMP. sensor of the indoor unit senses the temperature. The temperature on the surrounding of the remote controller can also be sensed. For details, contact the dealer from which you have purchased the air conditioner.

• In case that one remote controller controls the multiple indoor units, the setup operation is unavailable in group control.

button

MODE

button (Operation mode select

button)

Selects desired operation mode.

button (Unit/Louver select button)

Selects a unit number (left) and louver number (right).

UNIT:

Selects an indoor unit when adjusting wind direction when multiple indoor units are controlled with one remote controller.

LOUVER (4-way Air Discharge Cassette Type 2H series only):

Selects a louver when setting louver lock or wind direction adjustment independently.

TEMP.

button (Set up temperature button)

Adjusts the room temperature. Set the desired set temperature by pushing

TEMP. or TEMP. .

3-4. Correct Usage

• When you use the air conditioner for the first time or when you change the SET DATA value, follow the procedure below.

From the next time, the operation displayed on the remote controller will start by pushing the

n Preparation

Turn on the main power switch and/or the leakage breaker.

• When the power supply is turned on, a partition line is displayed on the display part of the remote controller. ∗ After the power supply is turned on, the remote controller does not accept an operation for approx. 1 minute,

but it is not a failure.

REQUIREMENT

• While using the air conditioner, operate it only with the leak breaker.

• When you use the air conditioner after it has not been used for a long period, turn on the power switch at least 12 hours before starting operation.

ON / OFF

button without turning off the main power switch and

ON / OFF

button only.

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

Start

1 Push

The operation lamp goes on, and the operation starts.

2 Select an operation mode with the

“MODE

One push of the button, and the display changes in the order shown as follows.

•“ Concealed Duct High Static Pressure Type.

ON / OFF

button.

MODE

” button.

DRY mode” function is not provided to

Cooling only model

DRY COOL FAN

Heat-pump model

HEAT DRY COOL FAN

(Dehumidify)

1 2

3 Select air volume with “

FAN

” button.

One push of the button, and the display changes in the order shown as follows.

AUTO HIGH MED. LOW

• When air volume is “

AUTO”, air volume

differs according to the room temperature.

DRY mode, “ AUTO” is displayed

• In and the air volume is LOW.

• In heating operation, if the room temperature is not heated sufficiently with VOLUME

LOW” operation, select “ MED.” or

“ “

HIGH” operation.

• The temperature sensor senses temperature near the air inlet of the indoor unit, which differs from the room temperature depending on the installation condition.

A value of setting temperature is the measure of room temperature. (“

AUTO” is not

selectable in the FAN mode.)

• Air volume of function is not provided to “Concealed Duct High Static Pressure Type” but air speed “

HIGH” only is displayed.

4 Determine the set up temperature by

pushing the “TEMP. button.

” or “TEMP. ”

AUTO

Heat Recovery model

HEAT DRY COOL FAN

(Dehumidify)

Stop

Push

The operation lamp goes off, and the operation stops.

ON / OFF

button.

[In case of cooling]

• Start the cooling operation after approx. 1 minute.

[In case of heating (For Heat-pump model only)]

• The heating operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes.

• After the heating operation has stopped, FAN operation may continue for approx. 30 seconds.

• When the room temperature reaches the set temperature, the super low wind is discharged and the air volume decreases excessively.

• During defrost operation, the fan stops so that cool air is not discharged. (“ PRE-HEAT” is displayed.)

NOTE

When restarting the operation after stop

• When restarting the operation immediately after stop, the air conditioner does not operate for approx. 3 minutes to protect the machine.

Automatic Operation (Super Heat Recovery Type Only)

When you set the air conditioner in mode or switch over from AUTO operation because of some settings change, it will automatically select either cooling, heating, or fan only operation depending on the indoor temperature.

3-5. Adjustment of Wind Direction

For best cooling and heating perf ormance, adjust the louv ers (adjustment of up/do wn wind direction) appropriately.

CAUTION

• If cooling operation is performed with downward air outlet, dew may fall on surface of the cabinet or the horizontal louver resulted in dripping.

• If heating operation is performed with horizontal air outlet, unevenness of temperature may increase in the room.

• Do not move the horizontal louver directly with hands; otherwise a trouble is caused. Select direction of the horizontal louver using The horizontal louver does not stop immediately even if the switch is pushed. Adjusting the stop position, push the switch.

u For all models

[In Cooling operation]

Use the louvers with horizontal set point.

[In Heating operation (For Heat-pump model only)]

Use the louvers with downward set point.

SWING/FIX

switch on the remote controller.

u For Under Ceiling, 1-way Air Discharge Cassette, High Wall Type

[Right / Left air direction adjustment]

To change the air outlet direction to right or left side, set the vertical louver inside of the horizontal louver to the desired direction.

u 4-way Air Discharge Cassette Type (1H series), Compact 4-way Type

• When the air conditioner is not operating, the louvers automatically direct downward.

• While the air conditioner is in ready status for heating, the louvers direct upward. The swinging operation starts after heating ready status has been cleared, but “SWING ” is displayed

on the remote controller even if the status is ready to heating.

u 4-way Air Discharge Cassette Type (2H series)

• When the air conditioner is not operating, the louvers automatically close.

• The louvers direct horizontally when heating begins, during defrost operation, or during the minimum operation after reaching the set temperature.

When you make a swing or air direction setting at this time, the remote controller display varies with the setting, but the louvers stay pointed straight out horizontally.

When the air conditioner starts heating, the louvers direct to the set direction.

• As the refrigerant recovery control for the outdoor units in the Modular Multi system works even if the outdoor units stop, in some cases, the louver of the stopped indoor unit may open for several minutes.

[In Heating operation

[In Cooling operation]

Use the louvers with horizontal set point.

(For Heat-pump model only)]

Use the louvers with downward set point.

For Cooling (Cool)

Direct the louvers horizontally.

According to the shape or arrangement of the room, the cold air and hot air can be discharged for two directions or three directions. For details, contact the dealer.

For Heating (Heat)

Direct the louvers downward.

TIMER SET

FAN

MODE

TIME

FILTER

RESET

TEST

SET

n How to set up the wind direction

1 Push

[In HEAT operation]

Direct the louver (adjustment plate of up/down wind direction) downward.

If directing horizontally, hot air may not come to the foot.

[In COOL/DR Y operation]

Direct the louver (adjustment plate of up/down wind direction) horizontally.

If directing it downward, the dew may form on the surface of the air discharge port and may drop down.

SWING/FIX

during operation.

The wind direction changes for every push of the button.

Initial setup

SAVE

SWING/FIX

VENT

UNIT LOUVER

Unit select button

n How to stop swinging

1 Push

SWING/FIX

at a desired position while the

louver is swinging.

• When

∗ However, even if

SWING/FIX

is pushed after that, wind direction

can be set again from the highest position.

SWING/FIX

is pushed while the louver is swinging, the louver position is displayed as follows and highest position of the louver may not be selected.

Display when swinging is stopped

FAN/HEAT operation

In this case, push

SWING/FIX

again two seconds later .

COOL/DRY operation

• In COOL/DRY operation, the louver does not stop as it directs downward. If stopping the louver as it directs downward during swing operation, it stops after moving to the third position from the highest position.

[In FAN operation]

Select a desired wind direction.

n How to start swinging

1 Push

SWING/FIX

, set the louver (adjustment plate of up/down wind direction) direction to the lowest position, and then push

SWING/FIX

SWING is displayed and the up/down wind direction is automatically selected.

Display during swinging

Repeat

Initial setup

again.

Display when stopping the swing

FAN/HEAT operation

COOL/DRY operation

Unit select button

• When multiple indoor units are controlled with one remote controller, wind direction can be set for each indoor unit by selecting individually.

• To set wind direction individually, push button to display an indoor unit number in the control group. Then set the wind direction of the displayed indoor unit.

• When no indoor unit number is displayed, all indoor units in the control group can be controlled simultaneously.

• Each time you push

UNIT LOUVER

button, the display

changes as follows:

Unit No. 1-2Unit No. 1-1 Unit No. 1-3

No display Unit No. 1-4

UNIT LOUVER

3-6. Timer Operation

Number

of days

Time

• A type of timer operation can be selected from the following three types . (Setting of up to 168 hours is enabled.) OFF timer : The operation stops when the time of timer has reached the set time.

Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts when the time of timer has reached the set time.

n Timer operation

FILTER

TEST

RESET

Set

1 Push TIMER SET button.

The timer display (type) changes for every push of the button.

OFF

(OFF timer) (Repeat OFF timer)

SETTING

•

and timer time displays flash.

2 Push

• For every push of button, the set time

TIME

to select “SET TIME”.

increases in the unit of 0.5 hr (30 minutes). When setting a time more than 24 hours for

timer operation, timer time can be set in the unit of 1 hr.

The maximum set time is 168hr (7 days). The remote controller displays the set time

with time (between 0.5 and 23.5 hours) (∗1) or number of days and time (24 hours or more) (∗2) as shown below.

decreases in the unit of 0.5 hr (30 minutes) (0.5 to 23.5 hours) or 1 hr (24 to 168 hours).

OFF ON

(ON timer)

No display

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

MODE

VENT

UNIT LOUVER

2 4

Example of remote controller display

• In the case of 23.5 hours (∗1)

• In the case of 34 hours (∗2)

shows 1 day (24 hours). shows 10 hours. (Total 34 hours).

3 Push SET button.

SETTING

•

display disappears and timer time display goes on, and or display flashes. (When ON timer is activated, timer time, ON timer are displayed and other displays disappear.)

4 Cancel of timer operation

Push

TIMER display disappears.

button.

NOTE

• When the operation stops after the timer reached the preset time, the Repeat OFF timer resumes the operation by pushing

• When you push function disappears and then appears again after about 5 seconds.

This is due to normal processing of the remote controller.

SWING/FIX

ON / OFF

button and stops the operation after the reached the set time.

while the OFF timer function of the air conditioner is active, the indication of the timer

3-7. Installation

Installation place

CAUTION

• Check that the air conditioner is not installed in a place subject to combustible gas leak. Accumulation of combustible gas around the unit may cause a fire.

• Drain the dehumidified water from the indoor unit and outdoor unit to a well-drained place.

• Do not put any obstacle near the air inlets and air outlet of the outdoor unit. Doing so may hinder the radiation, which may reduce the performance or activate the protective device.

Electrical wiring

WARNING

• Be sure to connect earth wire. (grounding work) Incomplete grounding cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

CAUTION

• Make sure that a leakage breaker is connected.

Using the air conditioner without leakage breaker may cause electric shock.

• Use a leakage breaker with an appropriate capacity.

Be sure to use the rated voltage and an exclusive circuit for power supply of the air conditioner.

Do not install the air conditioner in the following places

• Do not install the air conditioner in any place within 1 m from a TV, stereo, or radio set. If the unit is installed in such place, noise transmitted from the air conditioner affects the operation of these appliances.

• Do not install the air conditioner near a high frequency appliance (sewing machine or massager for business use, etc.), otherwise the air conditioner may malfunction.

• Do not install the air conditioner in a humid or oily place, or in a place where steam, soot, or corrosive gas is generated.

• Do not install the air conditioner in a salty place such as seaside area.

• Do not install the air conditioner in a place where a great deal of machine oil is used.

• Do not install the air conditioner in a place where it is usually exposed to strong wind such as in seaside area.

• Do not install the air conditioner in a place where sulfureous gas generated such as in a spa.

• Do not install the air conditioner in a vessel or mobile crane.

• Do not install the air conditioner in an acidic or alkaline atmosphere (in a hot-spring area or near a chemicals factory, or in a place subject to combustion emissions).

Corrosion may be generated on the aluminum fin and copper pipe of the heat exchanger.

• Do not install the air conditioner near an obstacle (air vent, lighting equipment, etc.) that disturbs discharge air. (Turbulent airflow may reduce the performance or disable devices.)

• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)

• Do not install the air conditioner over an object that must not get wet. (Condensation may drop from the indoor unit at a humidity of 80% or more or when the drain port is clogged.)

• Do not install the air conditioner in a place where an organic solvent is used.

• Do not install the air conditioner near a door or window subject to humid outside air. Condensation may form on the air conditioner.

• Do not install the air conditioner in a place where special spray is used frequently.

Be careful with noise or vibrations

•

Do not install the air conditioner in a place where noise by outdoor unit or hot air from its air outlet annoys y our neighbors .

• Install the air conditioner on a solid and stable foundation so that it prevents transmission of resonating, operation noise and vibration.

• If one indoor unit is operating, some sound may be audible from other indoor units that are not operating.

3-8. Maintenance

WARNING

Be sure to turn off the main power switch prior to the maintenance.

• Please do not intend to do the daily maintenance and/or Air Filter cleaning by yourself.

Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it. Do not attempt it yourself.

Cleaning of air filters

Clogging of air filters will reduce the cooling and heating performance.

1 When “ FILTER” appears on the remote controller, clean the air filters. 2 When the cleaning of air filters has been completed,

push

FILTER

RESET

button. “ FILTER” disappears.

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

CAUTION

Cleaning of unit

Clean the unit with a soft dry cloth. If dirt cannot be removed with the dry cloth, use a cloth slightly dampened with lukewarm (under 40 °C) water.

Cleaning of remote controller

• Use a dr y cloth to wipe the remote controller.

• A cloth dampened with cold water may be used on the indoor unit if it is very dirty.

• Never use a damp cloth on the remote controller.

• Do not use a chemically-treated duster for wiping or leave such materials on the unit for long. It may damage or fade the surface of the unit.

• Do not use benzine, thinner, polishing powder, or similar solvents for cleaning. These may cause the plastic surface to crack or deform.

Thinner

Periodic check

Long-period use of the air conditioner may cause deterioration or failure of parts due to heat, humidity, dust, and operating conditions, or may cause poor drainage of dehumidified water.

If you do not plan to use the unit for more than 1 month

1) Operate the fan for 3 to 4 hours to dry inside the unit.

• Operate “FAN” mode.

2) Stop the air conditioner and turn off the main power switch or the circuit breaker.

Checks before operation

1) Check that the air filters are installed.

2) Check that the air outlet or inlet is not blocked.

3) Turn on the main power switch or the circuit breaker for the main power supply to the air conditioner.

NOTE

• For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner.

When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended. Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof

treatment, if necessary. As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and

outdoor unit at least once every 3 months. Ask a professional for this cleaning/maintenance work. Such maintenance can extend the life of the product though it involves the owner’s expense. Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leak-

age, and even compressor failure.

Maintenance List

Part

Heat exchanger

Fan motor

Filter

Fan

Air inlet/outlet grilles

Drain pan

Ornamental panel, louvers

Check (visual/auditory)

• Dust/dirt clogging, scratches

• Sound

• Dust/dirt, breakage

• Vibration, balance

• Dust/dirt, appearance

• Dust/dirt, scratches

• Dust/dirt clogging, drain contamination

• Dust/dirt, scratches

WARNING

Maintenance

• Wash the heat exchanger when it is clogged.

• Take appropriate measures when abnormal sound is generated.

• Wash the filter with water when it is contaminated.

• Replace it when it is damaged.

• Replace the fan when vibration or balance is terrible.

• Brush or wash the fan when it is contaminated.

• Fix or replace them when they are deformed or damaged.

• Clean the drain pan and check the downward slope for smooth drainage.

• Wash them when they are contaminated or apply repair coating.

Re-Installation

Ask the dealer or an installation professional to re-install the air conditioner to a new place or move it to another place and to observe the following items.

If the air conditioner is inappropriately installed by yourself, it may cause electric shock or fire.

CAUTION

Be sure to clean the heat exchanger with pressurized water. If an commercially detergent (strong alkaline or acid cleaning agent) is used, the surface treatment of the heat

exchanger will be marred, which may degrade the self cleaning performance. For details, contact the dealer.

u High Wall T ype

• Open the air inlet grille. Lift the air inlet grille up to the horizontal position.

• Take hold of the left and right handles of the air filter and lift it up slightly, then pull downward to take it out from the filter holder.

Filter holder

Return the air filter

• Insert the upper portion of air filter confirming to fit it is right and left edges on the indoor unit until it is firmly set.

• Close the air inlet grille.

Filter holder

Cleaning the air inlet grille

1. Remove the air inlet grille. Hold the two sides of the air inlet grille and open upwards. Move the center arm to the left and remove the grille.

2. Wash it with water using a soft sponge or towel. (Do not use metallic scrubbing brush or other hard brushes.)

• Use of such hard objects will cause scratches on the surface of

the grille, and the metal coating to peel off.

• If very dirty, clean the air inlet gr ille with a neutral detergent for

kitchen use, and rinse it off with water.

3. Wipe out water from the air inlet grille and dry it.

4. Fit the left and right arms of the air inlet grille to the shafts on the two sides of the air conditioner and push in completely, and then push in the center arm.

5. Check that the center arm has been completely inserted and close the air inlet grille.

• Push the arrow locations (Four) at the bottom of the air inlet

grille to check whether the grill is completely closed.

NOTE

Cleaning of air filter

• For cleaning of air filter, use a cleaner or brush clean.

If stain is heavy, it is effective to wash the air filter in tepid water mixed with neutral detergent.

• After washing, rinse it well, and dry it in the shade.

• Install again the air filter which has been cleaned.

3-9. Air Conditioner Operations and Performance

Check before operation

• Check whether earth wire is disconnected or out of place.

• Check that air filter is installed to the indoor unit.

• Check that the air outlet or inlet is not blocked.

• Turn on the main power switch or the circuit breaker for the

main power supply to the air conditioner.

Turn on the power switch 12 hours or more before starting before operation.

Heating capacity (for Heat-pump model only)

• For heating, a heat pump system which sucks in outside heat air and discharges it into the room is adopted.

If temperature of the outside air lowers, the heating capacity decreases.

• When temperature of the outside air is low, it is recommended to use other heating equipment together.

Defrost operation during heating operation (for Heat-pump model only)

• If the outdoor unit has some frost during heating operation, the operation mode changes automatically to defrost mode

to increase the heating effect (for approx. 2 to 10 minutes).

• During defrost operation, fans of the indoor and the outdoor units stop.

3 minutes protection

• The outdoor unit does not operate for approx. 3 minutes after air conditioner has been immediately restarted after stop,

or power switch has been turned on. This is to protect the system.

Main power failure

• If a power failure occurred during the operation, all operations stop.

• When restarting the operation, push ON/OFF button again.

Fan rotation of stopped unit

• While other indoor units operate, the fan on indoor units on “stand-by” rotates to protect the machine once per approx.

1 hour for several minutes.

Protective device (High pressure switch)

The high pressure switch stops the air conditioner automatically when excessive load is applied to the air conditioner. If the protective device works, the operation lamp keeps lit but the operation stops. When the protective device works, “ in the remote controller display part flash. The protective device may work in the following cases.

• When the air inlet or air outlet of the outdoor unit is blocked.

• When strong wind blows continuously against the air outlet of the outdoor unit.

• When dust or dirt is excessively adhered to air filter of the indoor unit.

• When the air outlet of the indoor unit is blocked.

Cooling/heating operation of Modular Multi system air conditioner

• In Modular Multi system air conditioner, each indoor unit can be individually controlled. However, cooling operation and

heating operation cannot be performed concurrently for the indoor units which are connected to one outdoor unit. When cooling operation and heating operation are performed concurrently, the indoor unit which is performing cooling operation stops, and “ If the manager has fixed the setting to COOL or HEAT, other operation than set up one cannot be performed. When other operation than set up one is performed, “

” on the display is lit. The indoor unit which is performing heating operation continues operation.

” on the display is lit and the operation stops.

Characteristics of heating operation (for Heat-pump model only)

• Hot air is not out immediately after the operation has started. After 3 to 5 minutes (differs according to room or outside

temperature) has passed and the indoor heat exchanger has been warmed up, hot air blows out.

• During operation, the outdoor unit may stop if outside temperature becomes high.

• When other outdoor unit performs heating operation while the fan is operating, the fan operation may be stopped

temporarily to prevent blowing of hot air.

Air conditioner operating conditions

For proper performance, operate the air conditioner under the following temperature conditions:

Outdoor temperature : –5°C to 43°C (Dry-bulb temp.)

Cooling operation

Heating operation

Room temperature : 21°C to 32°C (Dry-bulb temp.), 15°C to 24°C (Wet-bulb temp.) CAUTION Room relative humidity: less than 80 %. If the air conditioner operates

in excess of this figure, the surface of the air conditioner may cause dewing. Outdoor temperature : –15°C to 15.5°C (Wet-bulb temp.) Room temperature : 15°C to 28°C (Dry-bulb temp.)

WARNING

”

If air conditioner is used outside of the above conditions, safety protection may operate.

3-10. When the Following Symptoms are Found

Check the points described below before asking repair servicing.

Symptom

Outdoor unit • White misty cold air or

Indoor unit •“Swish” sound is heard

It is not a failure.Check again.

• When power of the air conditioner is turned on, “Ticktock” sound is heard.

• Fan and louvers of the indoor unit moves when the unit is not operated.

water is out.

• Sometimes, noise “Pushu !” is heard.

sometimes.

• Slight “Pishi!” sound is heard.

• Discharge air smells.

” indication is lit.

•“

• Sound or cool air is output from the stand by indoor unit.

Cause

• Fan of the outdoor unit stops automatically and performs defrost operation.

• Solenoid valve works when defrost operation starts or finishes.

• When the operation has started, dur ing the operation, or immediately after the operation has stopped, a sound such as water flows may be heard, and the operation sound may become larger for 2 or 3 minutes immediately after the operation has started. They are flowing sound of refrigerant or draining sound of dehumidifier.

• This is sound generated when heat exchanger, etc. expand and contract slightly due to change of temperature.

• Various smell such as one of wall, carpet, clothes, cigarette, or cosmetics adhere to the air conditioner.

• When cooling operation cannot be performed because another indoor unit performs heating operation.

• When the manager of the air conditioner has fixed the operation to COOL or HEAT, and an operation contrar y to the setup operation is performed.

• When fan operation stopped to prevent discharge of hot air.

• Since refrigerant is flowed temporarily to prevent stay of oil or refrigerant in the stand by indoor unit, sound of flowing refrigerant, “Kyururu” or “Shaa” may be heard or white steam when other indoor unit operates in HEAT mode, and cold air in COOL mode may be blow-out.

• Sound is generated when the expansion valve operates when power has been turned on.

• Intermittent operation of the fan with louvers open is sometimes carried out for the refrigerant recovery control of unoperated unit.

Operates or stops automatically. Does not operate.

Silent

Air is not cooled or warmed sufficiently.

It’s strange.

• Is the timer “ON” or “OFF”?

• Is it a power failure?

• Is the power switch turned off?

• Is the power fuse or breaker blown?

• Has the protective device operated? (The operation lamp goes on.)

• Is the timer “ON”? (The operation lamp goes on.)

• Are COOL and HEAT selected simultaneously? (“

” indication is lit on the display of the remote controller.)

• Is the air inlet or air outlet of the outdoor unit obstructed?

• Are any door or window open?

• Is the air filter clogged with dust?

• Is discharge louver of the indoor unit set at appropriate position?

• Is air selection set to “LOW” “MED”, and is the operation mode set to “FAN”?

• Is the setup temp. the appropriate temperature?

• Are COOL and HEAT selected simultaneously? (“

” indication is lit on the display of the remote controller.)

CAUTION

If any of the follo wing conditions occur, turn off the main power supply switch and immediately contact the dealer :

• Switch operation does not work properly.

• The main power fuse often blows out, or the circuit breaker is often activated.

• A foreign matter or water fall inside the air conditioner.

• When the air conditioner does not operate even after the cause of the protective device activation has been removed. (The operation lamp and on the remote controller are flashing.)

• Any other unusual conditions are observed.

Confirmation and check

When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of the remote controller.

The check code is only displayed during the operation. If the display disappears, operate the air conditioner

according to the following “Confir mation of error history” for confirmation.

Check code

Indoor unit No. in which an error occurred

Confirmation of error history

When a trouble occurred on the air conditioner, the trouble history can be confirmed with the following procedure. (The trouble history is stored in memory up to 4 troubles.)

The history can be confirmed from both operating status and stop status.

Procedure

and

TEST

buttons at the same time for 4 seconds

When pushing or more, the following display appears.

If [ Service check] is displayed, the mode enters in the trouble history mode.

• [01 : Order of trouble history] is displayed in CODE No. window.

• [Check code] is displayed.

• [Indoor unit address in which an error occurred] is displayed in UNIT No. Every pushing of [ / ] button used to set temperature, the trouble history stored in memory is

displayed in order. The numbers in CODE No. indicate CODE No. [01] (latest) → [04] (oldest).

CAUTION

Do not push CL button because all the trouble history of the indoor unit will be deleted.

Description

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

TEST

button to return to the usual display.

After confirmation, push

1. Check the troubles according to the above procedure.

2. Ask an authorized dealer or qualified service (maintenance) professional to repair or maintain the air conditioner.

3. More details of the ser vice code are explained in Service Manual.

Check these items.

If any of these problems still remains, stop the operation, turn off the leakage breaker, and then notifies the dealer of the serial number and details of the error. Never repair any part by yourself as it is dangerous.

When and a combination of , , , , or and a number are displayed on the remote controller, also inform the dealer of the display content.

3-11. Installation Manual

1 ACCESSORY PARTS

n Accessory parts

Part name

Installation plate

Wireless remote controller

Battery

Remote controller holder

Mounting screw Ø4 × 25L

Pan head wood screw Ø3.1 × 16L

Screw Ø4 × 10L

Heat insulator

Name

Owner’s manual

Installation manual

Q’ty

Shape

2 PRECAUTIONS FOR SAFETY

• Ensure that all Local, National and International regulations are satisfied.

• Read this “PRECAUTIONS FOR SAFETY” carefully before Installation.

• The precautions described below include the important items regarding safety. Observe them without fail.

• After the installation work, perform a trial operation (test run) to check for any problem. Follow the Owner’s Manual to explain how to use and maintain the unit to the customer.

• Turn off the main power supply switch (or breaker) before the unit maintenance.

• Ask the customer to keep the Installation Manual together with the Owner’s Manual.

WARNING

• Ask an authorized dealer or qualified installation professional to install (including moving)/maintain the air conditioner.

Inappropriate installation may result in water leakage, electric shock or fire.

• Be sure to connect earth wire. (grounding work)

Incomplete grounding cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

• Turn off the main power supply switch or breaker before attempting any electrical work.

Make sure all power switches are off. Failure to do so may cause electric shock.

• Install the refrigerant pipe securely during the installation work before operating the air conditioner.

If the air conditioner is operated with the valve open and without the refrigerant pipe, the compressor sucks air and the refrigeration cycle is overpressurized, which may cause a burst or injury.

• When moving the air conditioner for the installation into another place, be very careful not to enter any gaseous matter other than the specified refrigerant into the refrigeration cycle.

If air or any other gas is mixed in the refrigerant, the gas pressure in the refrigeration cycle becomes abnormally high and it resultingly causes pipe burst and injuries on persons.

• Perform installation work properly according to the Installation Manual.

Inappropriate installation may result in water leakage, electric shock or fire.

• When the air conditioner is installed in a small room, provide appropriate measures to ensure that the concentration of refrigerant leakage occur in the room does not exceed the critical level.

• Install the air conditioner securely in a location where the base can sustain the weight adequately.

• Perform the specified installation work to guard against an earthquake.

If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

• If refrigerant gas has leaked during the installation work, ventilate the room immediately.

If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.

• After the installation work, confirm that refrigerant gas does not leak.

If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas might generate.

• Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make sure the air conditioner uses an exclusive power supply.

An insufficient power supply capacity or inappropriate installation may cause fire.

• Use the specified wires for wiring connect the terminals securely fix.

To prevent external forces applied to the terminals from affecting the terminals.

• Conform to the regulations of the local electric company when wiring the power supply.

Inappropriate grounding may cause electric shock.

• For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the compressor before disconnecting the refrigerant pipe.

If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor sucks air and the refrigeration cycle is overpressurized, which may cause a burst or injury.

2 PRECAUTIONS FOR SAFETY

3 SELECTION OF INSTALLATION PLACE

CAUTION

New Refrigerant Air Conditioner Installation

• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER.

• The characteristics of R410A refrigerant are ; easy to absorb water, oxidizing membrane or oil, and its pressure is approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.

• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of the main unit and installation tools are changed from those for the conventional refrigerant.

• Accordingly the exclusive tools are required for the new refrigerant (R410A).

• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.

To Disconnect the Appliance from Main Power Supply.

• This appliance must be connected to the main power supply by means of a switch with a contact separation of at least 3 mm.

• The installation fuse must be used for the power supply line of this conditioner.

• Tighten the flare nut with a torque wrench in the specified manner.

Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

• Wear heavy gloves and a long sleeve shirt during the installation work to avoid injury.

WARNING

• Install the air conditioner at enough strong place to withstand the weight of the unit.

If the strength is not enough, the unit may fall down resulting in injury.

CAUTION

• Do not install the air conditioner in a location subject to a risk of exposure to a combustible gas.

If a combustible gas leaks and stays around the unit, a fire may occur.

Upon approval of the customer, install the air conditioner in a place that satisfies the following conditions.

• Place where the unit can be installed horizontally.

• Place where a sufficient servicing space can be ensured for safety maintenance and check.

• Place where drained water will not cause any problem.

Avoid installing in the following places.

• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide gas (hot spring). (Should the unit be used in these places, special protective measures are needed.)

• A restaurant kitchen where a lot of oil is used or place near machines in a factory (Oil adhering to the heat exchanger and resin part (cross flow fan) in the indoor unit may reduce the performance, generate mist or dew drop, or deform or damage resin par ts.)

• Place where organic solvent is used nearby.

• Place close to a machine generating high frequency.

• Place where the discharged air blows directly into the window of the neighbor house. (Outdoor unit)

• Place where noise of the outdoor unit is easily transmitted. (When install the outdoor unit on the boundary with the neighbor, pay due attention to the level of noise.)

• Place with poor ventilation.

• Do not use the air conditioner for special pur poses such as preserving food, precision instruments, or art objects, or where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)

• Place where any of high-frequency appliances (including inverter devices, private power generators, medical equipment, and communication equipment) and inverter-type fluorescent light is installed. (A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances/ equipment may occur.)

• When the wireless remote controller is used in a room equipped with an inverter-type fluorescent light or at a place exposed to direct sunlight, signals from the remote controller may not be received correctly.

• Place where organic solvent is used.

• Place near a door or window exposed to humid outside air (Dew droping may form.).

• Place where special spray is used frequently.

3 SELECTION OF INSTALLATION PLACE

n Installation diagram of Indoor and outdoor units

Before installing the wireless remote controller

1. Remove the battery cover.

2. Insert 2 new batteries (R03 [AAA] type) following the (+) and (–) positions.

Wireless remote controller

Cover

Batteries

A C L

850m

(Attach to the front panel.)

Batteries

∗2

or m

ore

Air filter

∗1

110mm or more

Hook

Wireless remote controller

Pan head wood screw

n Installation space

The indoor unit shall be installed so that its top surface comes at a height of 2m or more. Also it must be avoided to put anything on top of the indoor unit.

∗1 Reserve space required to install the indoor unit and for service work.

Keep 110mm or more for clearance between top plate of the indoor unit and the ceiling surface.

∗2 Provide a space as shown for service clearance for the cross flow fan.

n Installation place

• A place which provides the spaces around the indoor unit as shown in the above diagram.

• A place where there is no obstacle near the air inlet and outlet.

• A place that allows easy installation of the piping to the outdoor unit.

• A place which allows the front panel to be opened.

Remote controller holder

Hook

Installation plate

170m

Shield pipe

or m

ore

Heat insulator

For the rear left and left piping

Wall

Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation.

Do not allow the drain hose to get slack.

Cut the piping hole sloped slightly.

Make sure to run the drain hose sloped downward.

The auxiliary piping can be connected to the left, rear left, rear right, right, bottom right or bottom left.

Right

Rear right

Bottom right

Rear left

Left

Bottom left

n Wireless remote controller

• A place where there are no obstacles such as a curtain that may block the signal from the indoor unit.

• Do not install the remote controller in a place exposed to direct sunlight or close to a heating source, such as a stove.

• Keep the remote controller at least 1m apart from the nearest TV set or stereo equipment. (This is necessary to prevent image disturbances or noise interference.)

• The location of the remote controller should be determined as shown below.

Indoor unit

Reception range

7 m

75˚

Remote controller Remote controller

(Top view)(Side view)

Indoor unit

Reception range

∗ : Axial distance

5 m

45˚

4 INSTALLATION OF INDOOR UNIT

WARNING

Install the air conditioner certainly to sufficiently withstand the weight. If the strength is insufficient, the unit may fall down resulting in human injur y. Perfor m a specified installation work to guard against strong wind or earthquake. An incomplete installation can cause accidents by the units falling and dropping.

REQUIREMENT

Strictly comply with the following rules to prevent damage of the indoor units and human injury.

• Do not put a heavy article on the indoor unit. (Even units are packaged)

• Carry in the indoor unit as it is packaged if possible. If carrying in the indoor unit unpacked by necessity, be sure to use buffering cloth, etc. to not damage the unit.

• To move the indoor unit, do not apply force to the refrigerant pipe, drain pan, foamed parts, or resin parts, etc.

• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specified.

Be careful to the following items when installing the unit.

• Considering air discharge direction, select an installation place where discharge air can circulate evenly in a room.

Avoid to install the unit at place with “NO GOOD” mark in the right figure.

OK NO GOOD

Good installation place Cooled well all over.

Bad installation place

: Not cooled well.

∗ 7 m

CAUTION

• Direct sunlight to the indoor unit’ s wireless receiver should be avoided.

• The microprocessor in the indoor unit should not be too close to RF noise sources. (For details, see the owner’ s manual.)

Screen

5 CUTTING A HOLE AND MOUNTING

Rear right

Rear left

Bottom left

Left

Bottom right

Right

Removing

front panel

Changing

drain hose

Piping

preparation

Die-cutting

front panel slit

6 PIPING AND DRAIN HOSE INSTALLATION

INSTALLATION PLATE

n Cutting a hole

In case of installing the refrigerant pipes from the rear:

1. Decide the hole position for piping at 180mm from the arrow mark ( installation plate and drill a hole at a slight downward slant toward outdoor side.

Pipe hole; dia.65mm: AP007-AP018 type Pipe hole; dia.80mm: AP024 type

80 65

1111012101

The center of the pipe hole is above the arrow

NOTE

• When drilling a wall that contains a metal lath, wire lath or metal plate, be sure to use a pipe hole brim ring sold separately.

n Mounting the installation plate

Hook

170

Indoor unit

Hook

Pipe hole

dia. 65mm: AP007-AP018 type dia. 80mm: AP024 type

180 mm

Be sure that the installation plate is fix to the wall with screws to make the indoor unit fit to the wall.

Anchor bolt holes

Hook

Mounting screw

Thread

Weight

Installation plate

80 65

1111012101

23 mm

170

132

dia. 65m

Pipe hole (dia. 65mm dia. 80mm)

) on the

2m or more from floor

n When the installation plate is

directly mounted on the wall

1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook up the indoor unit.

2. To mount the installation plate on a concrete wall with anchor bolts, utilize the anchor bolt holes as illustrated in the above figure.

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a mounting screw, do not use the anchor bolt hole.

Otherwise the unit may fall down and result in personal injury and property damage.

GOOD

5mm dia. hole

GOOD

Anchor bolt

Clip anchor (local parts)

Projection 15mm or less

Mounting screw 4 × 25L

CAUTION

Failure to firmly install the unit may result in personal injury and property damage if the unit falls.

• In case of block, brick, concrete or similar type walls, make 5mm dia. holes in the wall.

• Insert clip anchors for appropriate mounting screws.

NOTE

• Secure four corners and lower parts of the installation plate with 6 mounting screws to install it.

n Piping and drain hose forming

∗ Apply heat-insulation for both refrigerant pipe and drain hose surely so that no dewing generates inside of

the equipment. (Use polyethylene foam for insulating material.)

1. Remove the front panel

The front panel must be removed for piping connections

Front panel

in the left, bottom left, and rear left directions.

• Open the air inlet grille upward.

• Remove the four screws securing the front panel.

• Slightly open the lower part of the front panel, and then pull the upper part of the front panel toward

you to remove it from the rear plate.

2. Die-cutting front panel slit

Cut out the slit on the leftward or right side of the front panel for the left or right connection and the slit on the bottom left or right side of the front panel for the bottom left or right connection with a pair of nippers.

3. Changing drain hose

For leftward connection, bottom-leftward connection and rear leftward connection’s piping, it is necessary to change the drain hose and drain cap.

Without changing the drain hose position, the indoor unit will not fit to the wall.

How to remove the drain hose

• The drain hose can be removed by removing the screw securing the drain hose and then pulling out the drain hose.

• When removing the drain hose, be careful of any sharp edges of steel plate. The edges can injuries.

• To install the drain hose, insert the drain hose firmly until the connection part contacts with heat insulator, and the secure it with original screw.

Air inlet grille

Heat insulator

Drain hose

(To the fore front of flare)

Gas side

Outward form of indoor unit

Use the handle of screwdriver, etc.

520mm

420mm

43mm

R 30 mm (Use polish polyethylene core or the like for bending pipe.)

Liquid side

Power supply wiring

Indoor unit

Auxiliary pipes

Installation plate

Control wiring

6 PIPING AND DRAIN HOSE INSTALLATION

How to remove the drains cap

Clip the drain cap by needle-nose pliers and pull out.

How to fix the drains cap

1) Insert hexagonal wrench (dia. 4mm) in a center head.

4mm

2) Firmly insert drains cap.

No gap

Insert a hexagon wrench (4mm)

Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap.

Application causes deterioration and drain leakage from the plug.

How to remove the drain hose

1) Remove the front panel.

2) Remove the screws of drain hose.

3) Pull out the drain hose.

How to fix the drain hose

1) Put the drain hose.

2) Screw the drain hose to the indoor unit.

3) Install the front panel.

u In case of right or left piping

• After scribing slits of the front panel with a knife or a marking-off pin, cut them with a pair of nippers oran equivalent tool.

Slit

u In case of bottom right or bottom left

piping

• After scribing slits of the front panel with a knife or a marking-off pin, cut them with a pair of nippers oran equivalent tool.

u Left-hand connection with piping

Bend the connecting pipe so that it is laid within 43mm above the wall surface. If the connecting pipe is laid exceeding 43mm above the wall surface, the indoor unit may unstably be set on the wall.

When bending the connecting pipe, make sure to use a spring bender so as not to crush the pipe.

Bend the connection pipe within a radius of 30 mm.

To connect the pipe after installation of the unit (figure)

NOTE

If the pipe is bent incorrectly, the indoor unit may unstably be set on the wall. After passing the connecting pipe through the pipe hole, connect the connecting pipe to the auxiliary pipes and

wrap the facing tape around them.

CAUTION

• Bind the auxiliary pipes (two) and power supply wiring and control wiring with facing tape tightly. In case of leftward piping and rearleftward piping, bind the auxiliary pipes (two) only with facing tape.

Firmly insert the drain hose and drain cap; otherwise, water may leak.

CAUTION

Slit

• Carefully arrange pipes so that any pipe does not stick out of the rear plate of the indoor unit.

• Carefully connect the auxiliary pipes and connecting pipes to one another and cut off the insulating tape wound on the connecting pipe to avoid double-taping at the joint, moreover, seal the joint with the vinyl tape, etc.

• Since dewing results in a machine trouble, make sure to insulate both the connecting pipes. (Use polyethylene foam as insulating material.)

• When bending a pipe, carefully do it, not to crush it.

7 INDOOR UNIT FIXING

9 REFRIGERANT PIPING

1. Pass the pipe through the hole in the wall, and hook the indoor unit on the installation plate at the upper hooks.

2. Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate.

3. While pushing the indoor unit onto the wall, hook it at the lower part on the installation plate.

Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate.

• For detaching the indoor unit from the installation plate,

pull the indoor unit toward you while pushing its bottom up at the specified parts.

REQUIREMENT

The lower part of indoor unit may float, due to thecondition of piping and you cannot fix it to theinstallation plate. In that case, use the screwsprovided to fix the unit and the installation plate.

Especially when the pipes are pulled out fromthe left side, the unit must be screwed to the installation plate.

8 DRAINAGE

1. Run the drain hose sloped downwards.

NOTE

• Hole should be made at a slight downward slant on the

outdoor side.

2. Put water in the drain pan and make sure that the water is drained out of doors.

3. When connecting extension drain hose, insulate the connecting part of extension drain hose with shield pipe.

CAUTION

Arrange the drain pipe for proper drainage from the unit. Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain water collected from dew, which forms on the back of the indoor unit, to the drain pan.

Therefore, do not store the power cord and other parts at a height above the drain guide.

Hook

Do not rise the drain hose.

50 mm or more

Drain hose

Hook here Installation plate

Push Push

Screw Screw

Do not put the drain hose end into water.

Shield pipe

Inside the room

Space for pipes

Push

(unhook)

Do not form the drain hose into a wavy shape.

Do not put the drain hose end in the drainage ditch.

Extension drain hose

Wall

Drain guide

n Refrigerant Piping

1. Use copper pipe with 0.8 mm or more

thickness. (In case pipe size is dia. 15.9, with

1.0mm or more.)

2. Flare nut and flare works are also different from those of the conventional refrigerant.

Take out the flare nut attached to the main unit of the air conditioner, and use it.

REQUIREMENT

When the refrigerant pipe is long, provide support brackets at intervals of 2.5 to 3m to clamp the refrigerant pipe.

Otherwise, abnormal sound may be generated.

CAUTION

IMPORTANT 4 POINTS FOR PIPING WORK

1. Remove dust and moisture from the inside of the connecting pipes.

2. Tight connection (between pipes and unit)

3. Evacuate the air in the connecting pipes using VACUUM PUMP.

4. Check the gas leakage. (Connected points)

n Pipe size

(dia : mm)

MMK-

Gas side

Liquid side

AP007 to

AP012 type

9.5

6.4

AP015 to

AP018 type

12.7

6.4

AP024 type

15.9

9.5

n Permissible Piping Length and

Height Difference

They vary according to the outdoor unit. For details, refer to the Installation Manual

attached to the outdoor unit.

Flaring

• Cut the pipe with a pipe cutter. Remove burrs completely. Remaining burrs may cause gas leakage.

• Insert a flare nut into the pipe, and flare the pipe. As the flaring sizes of R410A differ from those

of refrigerant R22, the flare tools newly manufactured for R410A are recommended.

However, the conventional tools can be used by adjusting projection margin of the copper pipe.

u Projection margin in flaring :

B (Unit : mm)

Rigid (Clutch type)

Outer dia. of copper pipe

6.4, 9.5

12.7, 15.9

R410A

tool used

R410A

0 to 0.5

u Flaring diam. meter size :

A (Unit : mm)

Outer dia. of copperpipe

6.4

9.5

12.7

15.9

∗ In case of flar ing for R410A with the conventional

flare tool, pull it out approx. 0.5 mm more than that for R22 to adjust to the specified flare size.

The copper pipe gauge is useful for adjusting projection margin size.

Conventional

tool used

R410A

1.0 to 1.5

-0.4

R410A

9.1

13.2

16.6

19.7

9 REFRIGERANT PIPING

10 ELECTRIC WORK

Tightening connection

CAUTION

• Do not apply excessive torque. Otherwise, the nut may crack depending on the conditions.

Outer diam.

of copper pipe

6.4 mm (dia.)

9.5 mm (dia.)

12.7 mm (dia.)

15.9 mm (dia.)

u Tightening torque of flare pipe connections

Pressure of R410A is higher than that of R22. (Approx. 1.6 times) Therefore, using a torque wrench, tighten the flare pipe connecting sections which connect the indoor and outdoor units of the

specified tightening torque. Incorrect connections may cause not only a gas

leak, but also a trouble of the refrigeration cycle. Align the centers of the connecting pipes and

tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure.

Work using double spanner

Tightening torque

14 to 18 (1.4 to 1.8 kgf•m) 33 to 42 (3.3 to 4.2 kgf•m) 50 to 62 (5.0 to 6.2 kgf•m) 68 to 82 (6.8 to 8.2 kgf•m)

(Unit : N•m)

Heat insulation

Heat insulation for the pipes should be done separately for the liquid side and gas side.

Because both of the liquid and gas side pipes become a low temperature during cooling

operation, sufficient heat insulation should be done to prevent condensation.

• Heat insulator with a heat resistance of 120°C or more must be used for the gas side pipe.

• The pipe connection section of the indoor unit must be heat insulated securely and compactly with the attached heat insulator.

Fix with vinyl tape

Heat insulator (attached)

Local side pipe

n Airtight test/Air purge, etc.

For airtight test, air purge, addition of refrigerant, and gas leak check, follow the Installation Manual attached to the outdoor unit.

n Open fully valves of the outdoor

unit

WARNING

1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external tension to the wires do not affect the connecting part of the terminals.

Incomplete connection or fixation may cause a fire, etc.

2. Be sure to connect earth wire. (grounding work)

Incomplete grounding cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

3. Appliance shall be installed in accordance with national wiring regulations.

Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.

CAUTION

• If incorrect/incomplete wiring is carried out, it will cause an electrical fire or smoke.

• Be sure to install an earth leakage breaker that is not tripped by shock waves.

If an earth leakage breaker is not installed, an electric shock may be caused.

• Be sure to use the cord clamps attached to the product.

• Do not damage or scratch the conductive core and inner insulator of power and inter-connecting wires when

peeling them.

• Use the power cord and Inter-connecting wire of specified thickness, type, and protective devices required.

• Never connect 220–240V power to the terminal blocks (

(Otherwise, the system will fail.)

REQUIREMENT

• For power supply wiring, strictly conform to the Local Regulation in each country.

• For wiring of power supply of the outdoor units, follow the Installation Manual of each outdoor unit.

• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.

The coating may melt resulting in an accident.

• After connecting wires to the terminal blocks, provide a trap and fix wires with the cord clamp.

• Run the refrigerant piping line and control wiring line in the same line.

• Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes.

, A , B , etc.) for control wiring.

REQUIREMENT

Tightening with an excessive torque may crack the nut depending on installation conditions. Tighten the nut within the specified tightening torque.

Piping with outdoor unit

• Shape of valv e differs according to the outdoor unit. For details of installation, refer to the Installation

Manual of the outdoor unit.

n Gas leak check

Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section or cap of the valve.

REQUIREMENT

Use a leak detector manufactured exclusively HFC refrigerant (R410A, R134a, etc.).

Wired remote controller wiring

Indoor unit

Wired remote controller

L1 L2 Ln

(Max. 8 units)

Remote controller inter-unit wiring

Indoor unit Indoor unit Indoor unit

Earth leakage breaker

U2U1

BLN

Earth

Indoor unit

U2U1

BLN

Earth

Remote controller

Indoor unit

U2U1

BLN

Earth

Indoor unit

U2U1

U2 U3 U4 U5 U6U1U2 U3U1

Earth

Indoor unit

Remote controller

Pull box Pull box Pull box

Earth leakage breaker power switch

Indoor power supply 220-240V, ~, 50Hz 220V ~, 60Hz

Control wiring between indoor units

Control wiring between indoor and outdoor units

Control wiring between outdoor units

Earth

terminal

Header outdoor unit

Outdoor Power supply 380V-415V ~, 50Hz 380V ~, 60Hz

Earth leakage breaker

U2 U3 U4 U5 U6U1U2 U3U1

Earth

terminal

Follower outdoor unit

Outdoor Power supply 380V-415V ~, 50Hz 380V ~, 60Hz

10 ELECTRIC WORK

n Power supply wire and communication wires specifications

Power supply wire and communication wires are procured locally. For the power supply specifications, follow the table below. Power supply wiring and communication wiring

are to be procured locally. For specifications of the power capacity of the outdoor unit and the power supply wires, refer to the

Installation Manual supplied with the outdoor unit.

Indoor unit power supply

• Prepare an exclusive power supply for the indoor unit independently of the outdoor unit.

• Arrange the power supplies to the indoor and outdoor units, so that a common earth leakage breaker and main switch can be used.

• Power supply wire specification: Cable 3-core 2.5mm², in conformity with Design H07 RN-F or 60245 IEC 57.

u Power supply

Power supply

Power supply switch/Earth leakage breaker or power supply wiring/fuse rating for indoor units should be selected by the accummulated total current values of the indoor units.

Power supply wiring Below 50m 2.5 mm²

Control wiring, Central controller wiring

• Use a 2 core non polarity wire.

• To prevent any possible noise issues, use a shielded 2 core wire.

• The total stated length of communication wiring is determined by the interconnecting length of indoor to outdoor wire plus the length of the central control communication wire.

u Communication line

Control wiring between indoor units, and outdoor unit (2-core shield wire) (Up to 2000m) 2.0 mm²

Central control line wiring (2-core shield wire) Wire size

Wire size

220–240V ~ 50Hz

220–220V ~ 60Hz

(Up to 1000m) 1.25 mm²

(Up to 1000m) 1.25 mm² (Up to 2000m) 2.0 mm²

n Control wiring between indoor and outdoor units

NOTE

An outdoor unit that is interconnected to the indoor units automatically becomes the header unit.

u Wiring example

Wired remote controller wiring

This wiring is not required when using the supplied wireless remote controller.

• For wiring remote controllers a 2 core non polarity wire must be used.

Wired remote controller wiring, remote controller inter-unit wiring Wire size: 0.5mm² to 2.0mm²

Total wire length of wired remote controller wiring and remote controller inter-unit wiring = L + L1 + L2 + … Ln

Total wire length of wired remote controller inter-unit wiring = L1 + L2 + … Ln Up to 200m

The remote controller wire (Communication line) and AC220–240V wires cannot be parallel to contact each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system due to noise, etc.

CAUTION

In case of wired type only Up to 500m In case of wireless type included Up to 400m

n Address setup

Set up the addresses as per the Installation Manual supplied with the outdoor unit.

U1 U2 A

(

)

(

)

N L

R(L)

S(N)

U1 U2 A

R(L)

ABU1U

S(N)

Terminal block for control/ wired remote controller wiring

Cord clamp

Wired remote controller wire

Terminal block for communication/ remote controller wiring

Power supply terminal block

Cord clamp

Power supply wire

Earth wire for power supply wire

Clamp base

Earth screw

Screws

Screw

Power supply wire

about 150mm

95mm

20mm

10mm

75mm

Clamp base

Cord clamp

Earth screw for power supply wire Earth screw for shield wire

Earth wire for shield wire

Terminal cover

R(L) S(N)

Earth screw

Earth line

Terminal block for control/wired remote controller wiring

Control wire Cord clamp

10 ELECTRIC WORK

n Wired remote controller wiring

• As the wired remote controller wire has non-polarity, there is no problem if connections to indoor unit terminal blocks A and B are reversed.

u Wiring diagram

Terminal block for remote controller wiring of indoor unit

A B

Wired remote controller wire (Procured locally)

Terminal block

Wired remote controller unit

n Wiring Connection

How to connect the power supply wiring and control wiring

The power supply wire and the control wire can be connected without removing the front panel.

REQUIREMENT

Connect the power supply wire after connecting the control wire for this model.

1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.

2. Remove the terminal cover and the clamp base.

3. Insert the power supply wire and control wire (according to the local rule) into the pipe hole on the wall.

4. Take the power supply wire out of the cable slot on the rear panel so that it protrudes about 150mm from the front.

5. Insert the control wire fully into the control/wired remote controller terminal block and secure it tightly with screws.

6. Clamp the control wire with the cord clamp.

7. Install the clamp base with a screw.

8. Insert the power supply wire fully into the terminal block and secure it tightly with screws.

Tightening torque : 1.2 N·m (0.12 kgf·m) Secure the earth line with the earth screw.

9. Clamp the power supply wire with the cord clamp.

10. Attach the terminal cover and the air inlet grille to

the indoor unit.

, A ,

CAUTION

• Be sure to refer to the wiring diagram attached inside

the front panel.

• Check local electrical cords and also any specific

wiring instructions and limitations.

• Do not catch the control wire when installing the

clamp base.

10 ELECTRIC WORK

11 APPLICABLE CONTROLS

n Wiring connection for flow selector unit

How to connect the wiring of flow selector unit

Connect the power supply wire and the communication wire supplied with the flow selector unit to the indoor unit.

1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.

2. Remove the four screws securing the front panel.

3. Slightly open the lower part of the front panel, and then pull the upper part of the front panel toward you to remove it from the rear plate.

4. Remove the terminal cover and the clamp base.

5. Insert the control wire fully into the control/wired remote controller ter minal block and secure it tightly with screws.

6. Connect the control wire connector of the flow selector unit to the lead with a connector to the left of the control/wired remote controller terminal block.

7. Clamp the control wire and the control wire of the flow selector unit with the cord clamp.

8. Install the clamp base with a screw.

9. Insert the power supply wire fully into the terminal block and secure it tightly with screws. Tightening torque: 1.2 N·m (0.12 kgf·m) Secure the earth line with the earth screw.

10. Clamp the power supply wire with the cord clamp.

11. Insert the power supply wire faston terminal of the flow selector unit into the power supply terminal.

Secure the earth line with the earth screw.

12. Clamp the power supply wire of the flow selector unit tight with the cord clamp.

13. Attach the terminal cover, the front panel and the air inlet grille to the indoor unit.

Control wire

Terminal block for control/wired remote

Control wire from the flow selector

controller wiring

Connector

Cord clamp

R(L)

S(N)

ABU1U

Power supply wire

Power supply terminal block

Earth screw for flow selector unit

Cord clamp

Power supply wire of flow selector unit

A wired remote controller is necessary for this function. This function cannot be operate with a wireless

remote controller.

REQUIREMENT

• When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote controller becomes available after power-on. This is normal.

It takes approx. 5 minutes until the remote control- ler becomes available.

Approx. 5 minutes

Poweron“SETTING”

flashes

“SETTING”

goes out

It takes approx. 1 minute until the remote controller becomes available.

Approx. 1 minute

Poweron“SETTING”

• Normal settings were made when the indoor unit was shipped from factory.

Change the indoor unit settings as required.

• Use the wired remote controller to change the settings.

∗ The settings cannot be changed using the

flashes

wireless remote controller, sub remote controller, or remote-controllerless system (for central remote controller only).

Therefore, install the wired remote controller to change the settings.

“SETTING”

goes out

Remote

controller is

available

Remote

controller is

available

n Changing of settings of for ap-

plicable controls

Basic procedure for changing settings

Change the settings while the air conditioner is not working. (Be sure to stop the air conditioner before making settings.)

The display content for setting differs from that on the former types of remote controller (RBCAMT21E/AMT32E). (The number of CODE NO. has increased.)

Procedure 1

TEST

Push

button and “TEMP.” button simultaneously for at least 4 seconds. After a while, the display flashes as shown in the figure.

Confirm that the CODE No. is [10].

• If the CODE No. is not [10], push erase the display content, and repeat the procedure from the beginning. (No operation of the remote controller is accepted for a while after (While air conditioners are operated under the group control, “ ” is displayed first.

UNIT LOUVER

When displayed following “ ” is the header unit.)

is pushed, the indoor unit number

TEST

button to

TEST

button is pushed.)

CAUTION

Confirm that every wires are stored in the electric parts box without getting caught before attaching the terminal cover.

(∗ Display content varies with

the indoor unit model.)

SET

11 APPLICABLE CONTROLS

Procedure 2

Each time you push numbers in the control group change cyclically.

Select the indoor unit you want to change settings. The fan of the selected unit runs and the louvers

start swinging. You can confirm the indoor unit for which you want to change settings.

UNIT LOUVER

button, indoor unit

Procedure 3

Using “TEMP.” / buttons, specify CODE No. [ ].

Procedure 4

Using timer “TIME” / buttons, select SET DATA [ ].

Procedure 5

Push

button. When the display changes from

flashing to lit, the setup is completed.

• To change settings of another indoor unit, repeat from Procedure

• To change other settings of the selected indoor unit, repeat from Procedure

Use

button to clear the settings.

To make settings after repeat from Procedure 2.

button was pushed,

Procedure 6

When settings have been completed, push button to determine the settings.

TEST

button is pushed, “SETTING (

When flashes and then the display content disappears and the air conditioner enters the normal stop mode.

(While “SETTING ( of the remote controller is accepted.)

SETTING

)” is flashing, no operation

SETTING

TEST

n Change of lighting time of filter sign

According to the installation condition, the lighting time of the filter sign (Notification of filter cleaning) can be changed.

Follow to the basic operation procedure

1 → 2 → 3 → 4 → 5 → 6 ).

(

• For the CODE No. in Procedure

• For the [SET DATA] in Procedure SET DATA of filter sign lighting time from the following table.

SET DATA

0000 0001 0002 0003 0004

Filter sign lighting time

150H (Factory setting)

3, specify [01].

4, select the

None

2500H 5000H

10000H

n To secure better effect of heating

When it is difficult to obtain satisfactory heating due to installation place of the indoor unit or structure of the room, the detection temperature of heating can be raised. Also use a circulator, etc. to circulate heat air near the ceiling.

Follow to the basic operation procedure. (

1 → 2 → 3 → 4 → 5 → 6).

• For the CODE No. in Procedure

• For the SET DATA in Procedure SET DATA of shift value of detection temperature to be set up from the table below.

)”

SET DATA

0000 0001 0002 0003 0004 0005 0006

Detection temp shift value

+3°C (Factory setting)

3, specify [06]. 4, select the

No shift

+1°C +2°C

+4°C +5°C +6°C

n Adjustment of air direction

1. Using the remote controller switch, change the up/down air direction by moving the horizontal louver.

2. Adjust the right/left air direction by bending the vertical grille inside of the air outlet port with hands.

REQUIREMENT

Do not touch the horizontal louver directly with hands; otherwise a trouble may be caused. For handling of the horizontal louver, refer to “Owner’s Manual” attached to the outdoor unit.

n Group control

In a group control, a remote controller can control up to maximum 8 units.

• The wired remote controller only can control a group control. The wireless remote controller is unavailable for this control.

• For cabling procedure and cables of the individual line (Identical refrigerant line) system, refer to “Electric work” in this Manual.

• Cabling between indoor units in a group is performed in the following procedure. Connect the indoor units by connecting the remote controller inter-unit cables from the remote controller

terminal blocks (A, B) of the indoor unit connected with a remote controller to the remote controller terminal blocks (A, B) of the other indoor unit. (Non-polarity)

• For address setup, refer to the Installation Manual attached to the outdoor unit.

NOTE

Net work adapter (Model TCB-PCNT20E) can not connect to this High Wall type air conditioner.

12 TEST RUN

A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller.

n Before test run

• Before turning on the power supply, carry out the following procedure.

1) Using 500V-megger, check that resistance

of 1MΩ or more exists between the terminal block of the power supply and the earth (grounding).

If resistance of less than 1MΩ is detected, do not run the unit.

2) Check the valve of the outdoor unit being

opened fully.

• To protect the compressor at activation time, leave power-ON for 12 hours or more be for operating.

WARNING

• Never press the electromagnetic contactor to

forcibly perfor m a test run. (This is very dangerous because the protective device does not work.)

• Before starting a test run, be sure to set addresses following the installation manual supplied with the outdoor unit.

n How to execute a test run

Using the wired remote controller, operate the unit as usual.

For the procedure of the operation, refer to the attached Owner’s Manual.

A forced test run can be executed in the following procedure even if the operation stops by thermo. OFF.

In order to prevent a serial operation, the forced test run is released after 60 minutes have passed and returns to the usual operation.

CAUTION

• Do not use the forced test run for cases other than the test run because it applies an excessive load to the devices.

In case of wired remote controller

2, 4 3

1,5

Procedure

Keep [TEST] is displayed on the display part and the selection of mode in the test mode is permitted.

Procedure 2

Push

Procedure 3

Using [COOL] or [HEAT].

• Do not run the air conditioner in a mode other than [COOL] or [HEAT].

• The temperature controlling function does not work during test run.

• The detection of error is performed as usual.

Procedure 4

After the test run, push run. (Display part is same as procedure 1.)

Procedure 5

Push test run mode. ([TEST] disappears on the display and the status returns to a normal.)

TEST

button pushed for 4 seconds or more.

ON / OFF

button.

MODE

button, select the operation mode,

ON / OFF

button to stop a test

TEST

check button to cancel (release from) the

In case of wireless remote controller (Forced test operation is performed in a different way.)

REQUIREMENT

• For the operation procedure, be sure to follow the Owner’s Manual.

• Finish the forced cooling oper ation in a short time because it applies excessiv e strength to the air conditioner.

• A test operation of forced heating is unavailable. Perfor m a test operation by heating operation using the switches of the remote controller. However heating operation may be not carried out according to the temperature conditions.

• Check wiring/piping of indoor and outdoor units

1. When pushing ( ) button for 10 seconds or more, “Pi!” sound is heard

and the operation changes to a forced cooling operation. After approx. 3 minutes, a cooling operation starts forcedly. Check cool air starts blowing. If the operation does not start,

check wiring again.

2. To stop a test operation, push (

(Approx. 1 second). The louver closes and the operation stops.

• Check transmission of remote controller

1. Push “START/STOP” button of the remote controller to check an operation can also start by the remote

controller.

•“Cooling” operation b y the remote controller ma y be una vailab le according to the temper ature conditions. Check wiring/piping of the indoor and outdoor units in forced cooling operation.

) button once again

13 TROUBLESHOOTING

A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller.

n Confirmation and check

When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of the remote controller.

The check code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error history” for confirmation.

Check code Indoor unit No. in

which an error occurred.

n Confirmation of error history

When a trouble occurred on the air conditioner, the trouble history can be confirmed with the following procedure. (The trouble history is stored in memory up to 4 troubles.)

The history can be confirmed from both operating status and stop status.

Procedure 1

When pushing

TEST

and

buttons at the same time for 4 seconds or more, the following display appears.

If [Service check

] is displayed, the mode enters

in the trouble history mode.

• [01 : Order of trouble history] is displayed in CODE

No. window.

• [Check code] is displayed in CHECK window.

• [Indoor unit address in which an error occurred] is

displayed in Unit No.

Procedure 2

Every pushing of “TEMP.” / button used to set temperature, the trouble history stored in memory is displayed in order.

The numbers in CODE No. indicate CODE No. [01] (latest) → [04] (oldest).

REQUIREMENT

Do not push CL button because all the trouble history of the indoor unit will be deleted.

Procedure 3

After confirmation, push theusual display.

TEST

button to return to

n Check method

On the remote controller (Wired remote controller, Central control remote controller) and the interface P.C. board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation is provided.

Therefore the operation status can be known. Using this selfdiagnosis function, a trouble or position with error of the air conditioner can be found as shown in the table below.

n Check code list

The following list shows each check code. Find the check contents from the list according to part to be checked.

• In case of check from indoor remote controller: See “Wired remote controller display” in the list.

• In case of check from outdoor unit: See “Outdoor 7-segment display” in the list.

• In case of check from indoor unit with wireless remote controller: See “Sensor block display of receiving unit” in the list.

Main

remote

controller

display

E01

E02

E03

E04

E06

— E08 E09 E10

E12

E15 E16 E18 E19

E20 E23

E25 E26 E28

E31

Check code

Outdoor 7-segment display

——

No. of indoor units in which sensor

E06

has been normally received E07 — E08 Duplicated indoor addresses

—— ——

01: Indoor/Outdoor communication E12 02: Communication between

outdoor units

E15 —

00: Capacity over

E16

01 ~: No. of connected units

——

00: Header is nothing

E19

02: Two or more header units

01: Outdoor of other line connected

E20

02: Indoor of other line connected E23 — E25 —

No. of outdoor units which received

E26

signal normally E28 Detected outdoor unit number

01: IPDU1 error

02: IPDU2 error

03: IPDU1, 2 error E31 04: Fan IPDU error

05: IPDU + Fan IPDU error

06: IPDU2 + Fan IPDU error

07: All IPDU error

Auxiliary code

Operation Timer PRE,

AI-NET : Artificial Intelligence, IPDU : Intelligent Power Drive Unit

: Lighting, ¤ : Flashing, l : Goes off

ALT : Flashing is alternately when there are two flashing LED., SIM : Simultaneous flashing when there are two flashing LED.

Wireless remote controller

Sensor block displa

of receiving unit

ll ll

ll ll ll

DEF. Flash

¤ ¤ ¤

¤ ¤

Communication error between indoor and remote controller (Detected at remote controller side)

Remote controller transmission error Communication error between indoor and remote

controller (Detected at indoor side) Communication circuit error between indoor/outdoor

(Detected at indoor side) Decrease of No. of indoor units Communication circuit error between indoor/outdoor

(Detected at outdoor side) Duplicated indoor addresses

Duplicated main remote controllers Communication error between indoor MCU

Automatic address start error

Indoor is nothing during automatic addressing Capacity over / No. of connected indoor units Communication error between indoor units Outdoor header units quantity error

Other line connected during automatic address Sending error in communication between outdoor units

Duplicated follower outdoor addresses Decrease of No. of connected outdoor units Follower outdoor unit error

IPDU communication error

Check code name

Judging

device

Remote

controller

Remote

controller

Indoor

I/F

Indoor / I/F

Remote

controller

Indoor

I/F

I/F I/F

Indoor

I/F

I/F I/F

I/F I/F I/F

I/F

Main

remote

controller

display

F01 F02 F03 F04 F05 F06 F07 F08 F10 F12

F13 F15

F16 F23 F24 F29 F31

H01

H02

H03 H04

H06 H07

H08

H14

H16

L03 L04

L05

L06 L07

L08 L09 L10 L20 L28

L29

L30

—

Check code

Outdoor 7-segment display

—— ——

—— F04 — F05 — F06 — F07 — F08 —

—— F12 —

01: Comp. 1 sid

F13

02: Comp. 2 side F15 — F16 — F23 — F24 —

——

F31 —

01: Comp. 1 side

H01

02: Comp. 2 side

01: Comp. 1 side H02

02: Comp. 2 side

01: Comp. 1 side

H03

02: Comp. 2 side H04 — H06 — H07 —

01: TK1 sensor error

02: TK2 sensor error

H08

03: TK3 sensor error

04: TK4 sensor error H14 —

01: TK1 oil circuit system error

02: TK2 oil circuit system error

H16

03: TK3 oil circuit system error

04: TK4 oil circuit system error

——

L04 —

——

L06 No. of indoor units with priority

——

L08 —

—— L10 — L20 — L28 —

01: IPDU1 error 02: IPDU2 error 03: IPDU3 error

L29 04: Fan IPDU error

05: IPDU1 + Fan IPDU error 06: IPDU2 + Fan IPDU error

07: All IPDU error L30 Detected indoor address L31 —

Auxiliary code

Wireless remote controller

Sensor block display

of receiving unit

Operation Timer PRE,

¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤

¤¤ ¤¤

¤¤ ¤¤ ¤¤ ¤¤ ¤¤

—

DEF. Flash

l l l

¡ ¡ ¡ ¡ ¡

¡ ¡ ¡ ¡

l l

¤ ¤

¤ ¤ ¤ ¤ ¤ ¤

¤ ¤

Check code name

ALT

Indoor TCJ sensor error

ALT

Indoor TC2 sensor error

ALT

Indoor TC1 sensor error

ALT

TD1 sensor error

ALT

TD2 sensor error

ALT

TE1 sensor error

ALT

TL sensor error

ALT

TO sensor error

ALT

Indoor TA sensor error

ALT

TS1 sensor error

ALT

TH sensor error

ALT

Outdoor temp. sensor miscabling (TE, TL)

ALT

Outdoor pressure sensor miscabling (Pd, Ps)

ALT

Ps sensor error

ALT

Pd sensor error

SIM

Indoor other error

SIM

Indoor EEPROM error Compressor break down Magnet switch error

Overcurrent relay operation Compressor trouble (lock)

Current detect circuit system error Comp 1 case thermo operation

Low pressure protective operation Oil level down detective protection

Oil level detective temp sensor error

Comp 2 case thermo operation Oil level detective circuit error

Magnet switch error Overcurrent relay operation

SIM

Indoor center unit duplicated

SIM

Outdoor line address duplicated Duplicated indoor units with priority

SIM

(Displayed in indoor unit with priority) Duplicated indoor units with priority

SIM

(Displayed in unit other than indoor unit with priority)

SIM

Group line in individual indoor unit

SIM

Indoor group/Address unset

SIM

Indoor capacity unset

SIM

Outdoor capacity unset

SIM

Duplicated central control addresses

SIM

Over No. of connected outdoor units

SIM

No. of IPDU error

SIM

Indoor outside interlock Extended I/C error

Judging device

Indoor Indoor Indoor

I/F I/F I/F I/F I/F

Indoor

I/F

IPDU

I/F I/F I/F I/F

Indoor

I/F

IPDU

MG-SW

Overcurrent relay

IPDU IPDU

I/F I/F I/F

I/F

I/F I/F

MG-SW

Overcurrent relay

Indoor

I/F I/F

I/F

Indoor

Indoor, I/F

Indoor

I/F

Indoor

I/F

Indoor

I/F

Main

remote

controller

display

P01 P03

P03 —

P04

P05

P07

P10

P10 Detected indoor address P12 P13

P13 — P15

P15 P17

P17 — P19

P19 Detected outdoor unit number P20

P20 —

P22 C

P22

P26

P29

P31

P31 —

Check code

Outdoor 7-segment display

——

01: Comp. 1 side 02: Comp. 2 side

01: Phase-missing detection 02: Phase error

01: Comp. 1 side 02: Comp. 2 side

——

01: TS condition 02: TD condition

0[: IGBT short 1 3[: Fan motor trouble

D E

01: Comp. 1 side 02: Comp. 2 side

Auxiliary code

[

Fan motor position detective circuit error

[

: TH sensor temp. error

(Heat sink overheat)

[

: TH sensor error

[

: Vdc output error

Wireless remote controller

Sensor block display

of receiving unit

Operation Timer PRE,

¤¤

Error detected by TCC-LINK central control device

Central

control device

indication

Check code

Outdoor

7-segment display

C05

——

C06

——

C12

——

P30

——

Auxiliary code

Differs according to error contents

of unit with occurrence of alarm

TCC-LINK : TOSHIBA Carriea Cominication Link.

Wireless remote controller

Sensor block display

of receiving unit

Operation Timer

PRE, DEF.

— — —

(L20 is displayed.)

Flash

Sending error in TCC-LINK central control device Receiving error in TCC-LINK central control device Batch alarm of general-purpose equipment control

interface Group control branching unit error Duplicated central control addresses

DEF. Flash

ALT ALT

ALT

ALT ALT ALT

ALT

Check code name

Indoor fan motor error Discharge temp. TD1 error

High-pressure SW system operation

Phase-missing detection /Phase error

Heat sink overheat error Indoor overflow error

Indoor fan motor error Outdoor liquid back detection error

Gas leak detection Discharge temp. TD2 error

4-way valve inverse error High-pressure protective operation

Outdoor fan IPDU error

G-TR short protection error

Comp position detective circuit system error Other indoor unit error

(Group terminal unit error)

Judging device

TCC-LINK TCC-LINK

General-purpose equipment

I/F

TCC-LINK

Judging

device

Indoor

I/F

IPDU

I/F

IPDU,

I/F Indoor Indoor

I/F

IPDU

Indoor

Gas sideLiquid side

Strainer

Pulse Motor Valve

(PMV)

4. REFRIGERATING CYCLE DIAGRAM

Capillary tube

Air heat exchanger

at indoor side

Strainer

Sensor

(TC2)

Sensor

(TCJ)

Fan

Sensor

(TC1)

Functional part name

Pulse Motor Valve PMV

Temp. sensor 1. TA

2. TC1

Sensor

(TA)

Fan motor

Functional outline

(Connector CN082 (6P): Blue)

1) Controls super heat in cooling operation

2) Controls under cool in heating operation

3) Recovers refrigerant oil in cooling operation

4) Recovers refrigerant oil in heating operation (Connector CN104 (2P): White)

1) Detects indoor suction temperature (Connector CN100 (3P): Brown)

1) Controls PMV super heat in cooling operation

3. TC2

4. TCJ

(Connector CN101 (2P): Blue)

1) Controls PMV under cool in heating operation (Connector CN102 (2P): Yellow)

1) Controls PMV super heat in cooling operation

5. CONTROL OUTLINE

5-1. Control Specifications

No.

When power supply is reset

Operation mode selection

Item

Outline of specifications

1) Distinction of outdoor unit When the power supply is reset, the outdoors are

distinguished and the control is selected according to the distinguished result.

2) If resetting the power supply during occurrence of a trouble, the check code is once cleared. After ON/OFF button of the remote controller was pushed and the operation was resumed, if the abnormal status continues, the check code is again displayed on the remote controller.

1) Based on the operation mode selecting command from the remote controller, the operation mode is selected.

Remote controller command

STOP

FAN

COOL

DRY

HEAT

AUTO

(SHRM only)

Air conditioner stops. Fan operation Cooling operation Dry operation Heating operation

• Ta and Ts automatically select COOL/ HEAT operation mode for operation.

Control outline

Remarks

Ta : Room temp. Ts: Setup temp.

Room temp. control

4 Automatic

capacity control

∗ Except SHRM, the automatic mode cannot be selected.

While a wireless remote controller is used, the mode is notified by “Pi Pi” (two times) receiving sound.

To clear the alternate flashing, change the mode on the wireless remote controller.

1) Adjustment range: Remote controller setup temperature (°C)

Wired type

Wireless type

COOL/DRY

18 to 29 17 to 30

HEAT

18 to 29 17 to 30

AUTO∗

18 to 29 17 to 30

2) Using the Item code 06, the setup temperature in heating operation can be corrected.

Setup data

Setup temp. correction

02346

+0°C +2°C +3°C +4°C +6°C

Setting at shipment

Setup data 3

1) Based on the difference between Ta and Ts, the operation capacity is determined by the outdoor unit.

∗ For SHRM only

Shift of suction temperature in heating operation

Except while sensor of the remote controller is controlled (Code No. [32], “0001”)

Ts: Setup temp. Ta: Room temp.

No.

Air speed selection

Prevention of cold air discharge

Item

Outline of specifications

Operation with (HH), (H), (L) or [AUTO] mode is carried out by the command from the remote controller. For the wireless remote controller type, (HH), (H+), (H), (L+), (L) or [AUTO] operation is carried out.

2) When the air speed mode [AUTO] is selected, the air

speed varies by the difference between Ta and Ts.

1. In heating operation, the higher temperature of TC2

sensor and TCJ sensor is compared with temperature of TC1 sensor and then the lower temperature is used to set the upper limit of the fan tap.

• When B zone has continued for 6 minutes, the operation shifts to C zone.

• In defrost time, the control point is set to +6°C.

(˚C)

A zone: OFF B zone:

Over 30˚C, below 32˚C, ULTRA LOW (LL)

C zone: Over 32˚C, below 34˚C, LOW (L)

D zone: Over 34˚C, below 36˚C, MED (H)

E zone: HIGH (HH)

Remarks

HH > H+ > H > L+ > L > UL

TCJ: Temperature of indoor

heat exchanger sensor

• In D and E zones, priority is given to remote controller air speed setup.

In A zone “ ” is displayed.

•

Freeze prevention control (Low temp. release)

1. In all cooling operation, the air conditioner operates as described below based upon temp. detected by

TC1: Temperature of indoor

heat exchanger sensor

TC1, TC2 and TCJ sensors.

• When “J” zone is detected for 5 minutes, the thermostat is forcedly off.

• In “K” zone, the timer count is interrupted, and held.

• When “

I” zone is detected, the timer is cleared and the operation returns to the

normal operation.

• If forced thermo OFF by continuation of “J” zone, operation of the indoor fan in

LOW mode continues until it reaches the “

I” zone.

It is rest when the following conditions are satisfied.

Reset conditions

1) TC1

2) 20 minutes passed after stop.

> 12°C and TC2 > 12°C and TCJ > 12°C

(˚C)

P1 Q1

10°C (5°C)

TC1

0°C

TC2, TCJ

–10°C

–14°C

( ) value:

When the power supply is turned on, the Forced thermo becomes OFF if the temperature is less than this indicated temperature.

2. In all cooling operation, the air conditioner operates as described below based upon temp. detected by TC2 and TCJ sensors.

• When “M” zone is detected for 45 minutes, the thermostat is forcedly off.

• In “N” zone, the timer count is interrupted and held.

• When shifting to “M” zone again, the timer count restarts and continues.

• If “L” zone is detected, the timer is cleared and the operation returns to normal

operation.

Reset conditions

1) TC1

> 12°C and TC2 > 12°C and TCJ > 12°C

2) 20 minutes passed after stop.

(˚C)

TC2, TCJ

5°C

–2.0°C

No.

Recov ery control for cooling oil (Refrigerant)

Recov ery control for heating refrigerant (Oil)

Compensation control for short intermittent operation

Item

Outline of specifications

The indoor unit which is under STOP/Thermo-OFF status or which operates in [FAN] mode performs the following controls when it receiv ed the cooling oil (Refrigerant) recov ery signal from the outdoor unit.

1) Opens PMV of the indoor unit with a constant opening degree.

2) Operates the indoor fan for approx. 3 minutes during recov ery control and after finish of control.

The indoor unit which is under STOP/Thermo-OFF status or which operates in [FAN] mode performs the following controls when it receiv ed the heating refrigerant (Oil) recov ery signal from the outdoor unit.

1) Opens PMV of the indoor unit with a constant opening degree.

2) Stop the indoor fan.

1) For 3 minutes after start of operation, the operation is forcedly continued ev en if the unit enters in Thermo-OFF condition.

2) Howev er the thermostat is OFF giv ing prior to COOL/HEAT selection, ready for operation and protectiv e control.

Remarks

• Recov ery operation is usually performed ev ery 2 hours.

• The indoor unit which is under thermo-OFF (COOL) status or which operates in [FAN] mode stops the indoor fan and displays [

• Recov ery operation is usually performed ev ery 1 hour.

Usually the priority is giv en to 5 minutes at outdoor controller side.

Elimination of retained heat

HA control

Display of filter sign [

] (Not prov ided to the wireless type)

∗ Separately set type

TCB-AX21E2 is prepared.

1) When the unit stopped from [HEAT] oper ation, the indoor fan operates with [L] f or approx. 30 seconds .

1) ON/OFF operation is av ailable by input of HA signal from the remote site when connected to remote controller or the remote ON/OFF interface.

2) HA control outputs ON/OFF status to HA terminal.

3) The I/O specifications of HA conform to JEMA standard.

1) The filter sign is displayed with LC by sending the filter-reset signal to the remote controller when the specified time (15 0H) elapsed as a result of integration of the operation time of the indoor fan.

2) The integrated timer is cleared when the filter-reset signal is receiv ed from the remote controller. In this time, if the specified time elapsed, the counted time is reset and the LC display is deleted.

When using HA terminal (CN61) for the remote ON/ OFF, a connector sold separately is necessary.

In case of group operation, use the connector to connect HA terminal to either master or follower indoor unit.

[ FILTER] goes on.

No.

Item

Display of

OPERATION

[ READY]

PRE-HEAT]

[

Outline of specifications

<OPERATION READY> Displayed on the remote controller

1) When the following check codes are indicated

• Open phase of power supply wiring [P05] was detected.

• There is an indoor unit that detected the indoor

overflow [P10].

• There is an indoor unit that detected the interlock alarm

[L30].

2) During Force Thermo-OFF

• [COOL/DRY] operation is unavailable because the other

indoor unit operates with [HEAT] mode.

• [HEAT] operation is unavailable because COOL priority

(SW11-bit1 of the Outdoor I/F P. C. board is ON) is set and the other indoor unit operates with [COOL/DRY] mode.

3) The above indoor units that cannot operate stay in Thermo-OFF status.

4) The indoor fan stops because the system performs [Recovery operation for heating refrigerant (Oil)].

Remarks

• < > display No display for wireless

remote controller

Selection of central control mode

<PRE-HEAT> Displayed on the remote controller The indoor fan stops in order to prevent discharge of cool air

when heating operation started or during heating operation. (including the defrost operation during thermo-OFF)

1) Selection of the contents that can be operated by the remote controller at the indoor unit side is possible according to setting at the central controller side.

2) Setting contents

• In case of TCC-LINK central control

Operation from

TCC-LINK

central control

Individual

[Central 1]

[Central 2]

[Central 3]

[Central 4]

(¡: Operation possible ×: Operation impossible)

ON/OFF Operation Timer Temp. Air speed Air direction

setting selection setting setting setting setting

¡¡¡¡ ¡ ¡

××××

¡ ¡

• In case of wired remote controller type, [Central control ] display (Goes on) in the central control mode

• Display flashes when an item of the operation prohibited was changed on the remote controller.

• In case of wireless remote controller type, the display lamp does not change but the contents that can be operated are same in the central control mode.

(∗1) The operation from the wireless remote controller in the central control mode is

notified with the receiving sound, Pi, Pi, Pi, Pi, Pi (5 times).

(∗1) If the operation select modes are different in the central 2 to 4 from those at the central

controller side, the operations Temp. Setting, air volume setting, and air direction setting are inoperable.

× ×

Operation on RBC-AMT32E

¡ ¡¡ ¡ ¡

¡¡ ¡

¡¡

> display

• <

RBC-AMT32E

No display

[Central control ]

display

No.

Item

Louver control

Outline of specifications

1) Louver position setup (Wired type)

• The louver position can be set up in the following operation range.

In cooling/dry operation In heating/fan operation

• In group operation, the louver positions can be set up collectively or individually.

2) Swing setup

• The following display is repeated.

In all operations

(Repeats)

• In group operation, the louver positions can be set up collectively or individually.

3) FIX setup (Wireless type) Keep pushing or pushing briefly the FIX button to move the louver in

the desired direction. Operating angle of louver will be different during cooling, dry and

heating operation.

4) When the unit stopped or the warning was output, the louver is automatically set to full closed position.

5) When PRE-HEAT defrost operation is performed), heating thermo is off, the louver is automatically set to horizontal discharge position.

is displayed (Heating operation started or

Remarks

Hi POWER operation (Wireless remote controller specific operations)

When you push the Hi POWER button during cooling, heating or A operation, the air conditioner will start the following operation.

• Cooling operation

Performs the cooling operation at 1°C lower than the setting temperature.

Only when the fan speed before the Hi POWER operation is not high, the fan speed will be increased.

• Heating operation

Performs the heating operation at 2°C higher than the setting temperature.

Only when the fan speed before the Hi POWER operation is not high, the fan speed will be increased.

• [Hi POWER] Display

No.

COMFORT SLEEP operation (Wireless remote controller specific operations)

Item

Outline of specifications

When you push the COMFORT SLEEP button during cooling, heating or A operation, the air conditioner will start the following operation.

The fan speed display will indicate AUTO and low speed will be used.

• Cooling operation

In the operation suppression zone, where capacity is kept to the minimum, overcooling is prevented by raising the temperature setting by 1°C after 1 hour and by 2°C after 2 hours of operation.

The room temperature is thus regulated between the operation suppression zone and the set temperature.

When the OFF timer is simultaneously set, 1, 3, 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected for OFF timer.

• Heating operation

In the operation suppression zone, where capacity is kept to the minimum, overheating is prevented by lowering the temperature setting by 1°C after 1 hour and by 2°C after 2 hours of operation.

The room temperature is thus regulated between the set temperature and the operation suppression zone.

When the OFF timer is simultaneously set, 1, 3, 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected for OFF timer.

Remarks

•[ ] display

PRESET operation (Wireless remote controller specific operations)

Operation suppression zone

1˚C

1 hour

2 hours

Operation starts

2˚C

Set temperature

Operation starts

Set temperature

1˚C

1 hour

2 hours

Start the air conditioner in the operation mode which you want the remote controller to memorize.

1) Push and hold the PRESET button for more than 3 seconds while the display flashes.

The mark is indicated and the setting is memorized.

• If you do not push the PRESET button within 3 seconds or if

you push another button, the memory setting is cancelled.

• Operation modes which can be memorized with the

PRESET button are MODE, Temperatures, FAN, TIMER and Hi POWER.

To operate the air conditioner with the setting memorized by the PRESET button.

1) Push the PRESET button briefly. The setting memorized will be indicated and the air conditioner

operates with regards to the setting.

• The lamp (green) on the display panel of the indoor unit

goes on, and operation starts after approximately 3 minutes.

• Initial setting:

MODE : AUTO Temperature : 22

2˚C

Operation suppression zone

•[ ] display

No.

QUIET operation (Wireless remote controller specific operation)

Item

Outline of specifications

When you push the QUIET button during cooling, heating, fan only or A operation, the air conditioner will start the following operation.

• The fan speed display will indicate AUTO and low speed will be used.

Remarks

•[ ] display

SLEEP operation

(Wireless remote controller specific operation)

22 Save operation 1) The function [Save operation] is not provided to the

When the OFF timer is set, 1, 3, 5 and 9 hours appear by turns every pushing SLEEP button and one of them can be selected for OFF timer.

Super Modular Multi series models.

• If pushing [SAVE] button ” on the remote

“ controller, “No function” is displayed.

6. APPLIED CONTROL

SET

6-1. Indoor Unit

6-1-1. Setup of Selecting Function in Indoor Unit

(Be Sure to Execute Setup by a Wired Remote Controller)

<Procedure> Execute the setup operation while the unit stops.

FILTER RESET

TEMP.

TEST

TIMER SET

TIME

SET

FAN

SAVE

SWING/FIX

ON / OFF

MODE

VENT

UNIT LOUVER

1 Push

The firstly displayed unit No. indicates the header indoor unit address in the group control. In this time, the fan of the selected indoor unit is turned on.

, CL , and

2 Every pushing

displayed. In this time, the fan of the selected indoor unit only is turned on.

TEST

buttons simultaneously for 4 seconds or more.

UNIT LOUVER

button, the indoor unit numbers in the group control are successively

3 Specify the item code (DN) using the setup temperature and buttons. 4 Select the setup data using the timer time and buttons.

(When selecting the DN code to “33”, change the temperature indication of the unit from “°C” to “°F” on the remote controller.)

5 Push

• To change the selected indoor unit, return to procedure 2 .

• To change the item to be set up, return to procedure 3 .

6 Pushing

button. (OK if display goes on.)

TEST

button returns the status to normal stop status.

Table: Function selecting item numbers (DN)

(Items necessary to perform the applied control at the local site are described.)

Filter display delay timer

Dirty state of filter

Central control address

Specific indoor unit priority

Heating temp shift

Existence of [AUTO] cool / heat mode

Cooling only

Type

Item

Description

0000 : None 0001 :150H 0002 : 2500H 0003 :5000H 0004 : 10000H

0000 : Standard 0001 : High degree of dirt (Half of standard time)

0001 : No.1 unit to 0064 : N o.64 unit 0099 : Unfixed

0000 :No prior ity 0001 : Priority

0000 :No shift 0001 :+1°C 0002 :+2°C to 0003 : +3°C 0010 :+10°C (Up to +6 recommended)

0000 :Provided 0001 :Not provided (Automatic selection from connected outdoor unit)

0000 :Heat pump 0001 :Cooling only (No display of [AUTO] [HEAT])

0008: High Wall

At shipment

0001 :150H

0000 :Standard

0099 :Unfixed

0000 :No priority

0003 :+3°C

0001 :Not provided

0000 :Heat pump

Depending on model type

Indoor unit capacity

Line address

Indoor unit address

Group address

Temp difference of [AUTO] mode selection COOL → HEAT, HEAT → COOL

Automatic restart of power failure

Selection of option/error input (CN80)

HA terminal (CN61) select

Ventilating fan control

TA sensor selection

0000 :Unfixed 0001 to 0034

0001 :No.1 unit to 0030 :No.30 unit

0001 :No.1 unit to 0064 :No.64 unit

0000 :Individual 0001 : Header unit of group 0002 :Follower unit of group

0000 :0 deg to 0010 :10 deg (For setup temperature, reversal of COOL/HEAT by ± (Data value)/2)

0000 :None 0001 : Restart

0000 :Filter input 0001 :Alarm input (Air washer, etc.) 0002 :Outside error input

0000 :Usual 0001 :Leaving-ON prevention control 0002 :Fire alarm input

0000 :Unavailable 0001 : Available

0000 :Body TA sensor 0001 : Remote controller sensor

According to capacity type

0099 :Unfixed

0003: 3 deg

(Ts±1.5)

0000 :None

0002 :Outside error input

(Interlock)

0000 :Usual

(HA terminal)

0000 :Unavailable

0000 :Body TA sensor

Temperature unit select

0000 :°C (at factory shipment) 0001 :°F

0000 :°C

TYPE

Indoor unit capacity

Item code [10]

Setup data

0008

Type

High Wall

Abbreviated Model name

MMK-AP XXX H

Item code [11]

Setup data

0001 0003 0005 0007 0009 0011

Model

007 009 012 015 018 024

6-1-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E2)

[Wiring and setup]

• Use the exclusive connector for connection with the indoor control P.C. board.

• In a group control, the system can operate when connecting with any indoor unit (Control P.C. board) in the group. However when taking out the operation/error signal from the other unit, it is necessary to take out from each unit individually.

(1) Control items

1) Start/Stop input signal : Operation start/stop in unit

2) Operation signal : Output during normal operation

3) Error signal : Output during alarm (Serial communication error or indoor/outdoor protective device) operation

(2) Wiring diagram using remote control interface (TCB-IFCB-4E2)

Input IFCB-4E2 : No voltage ON/OFF serial signal Output No voltage contact for operation, error display

Contact capacity: Below Max. AC240V 0.5A

Indoor control P.C. board

Start/Stop input

COM (GND)

Remote controller prohibition/clear input

Operation signal output

COM (+12V)

Error signal output

1 2 3 4 5 6

CN61

T10

(YEL)

1 2 3 4

CN06

1 2 3 4 5 6

CN13

ON side Start signal input

OFF side Stop signal input

COM

Operation signal output

TCB-IFCB-4E2

Power supply 220 240V, 50Hz

220V, 60Hz

Error signal output

n Ventilating fan control from remote controller

SET

[Function]

• The start/stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system.

• The fan can be operated even if the indoor unit is not operating.

• Use a fan which can receive the no-voltage A contact as an outside input signal.

• In a group control, the units are collectively operated and they can not be individually operated.

1. Operation

Handle a wired remote controller in the following procedure. * Use the wired remote controller during stop of the system. * Be sure to set up the wired remote controller to the header unit. (Same in group control) * In a group control, if the wired remote controller is set up to the header unit, both header and follower

units are simultaneously operable.

1 Push concurrently

The unit No. displayed firstly indicates the header indoor unit address in the group control. In this time, the fan of the selected indoor unit turns on.

2 Every pushing

In this time, the fan of the selected indoor unit only turns on.

UNIT LOUVER

+ CL +

button, the indoor unit n umber s in gr oup contr ol are displayed successively.

TEST

buttons for 4 seconds or more.

3 Using the setup temp or button, specify the item code 31 . 4 Using the timer time or button, select the setup data. (At shipment:  )

The setup data are as follows:

Setup data





5 Push

• To change the selected indoor unit, go to the procedure 2 ).

• To change the item to be set up, go to the procedure 3 ).

6 Pushing

button. (OK if display goes on.)

TEST

returns the status to the usual stop status.

Handling of operation of air to air heat exchanger or ventilating fan

Unavailable (At shipment)

Available

2. Wiring

Relay (DC12V, procured locally)

CN32

FAN DRIVE

(2P WHI)

Indoor control

P.C. board

Note) Determine the cable length between the

121

indoor control P.C. board and the relay within 2m.

Outside control input of fan

To terminal

Corresponds up to a relay in which rated current of the operation coil is approx. 75mA

n Leaving-ON prevention control

SET

[Function]

• This function controls the indoor units individually. It is connected with cable to the control P.C. board of the indoor unit.

• In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the item code 2E is set to the connected indoor unit.

• It is used when the start operation from outside if unnecessary but the stop operation is necessary.

• Using a card switch box, card lock, etc, the forgotten-OFF of the indoor unit can be protected.

• When inserting a card, start/stop operation from the remote controller is allowed.

• When taking out a card, the system stops if the indoor unit is operating and star t/stop operation from the remote controller is forbidden.

1. Control items

1) Outside contact ON : The start/stop operation from the remote controller is allowed.

(Status that card is inserted in the card switch box)

2) Outside contact OFF : If the indoor unit is operating, it is stopped forcedly.

(Start/Stop prohibited to remote controller) (Status that card is taken out from the card switch box)

* When the card switch box does not perform the above contact operation, convert it using a relay with b

contact.

2. Operation

Handle the wired remote controller switch in the following procedure. * Use the wired remote controller switch during stop of the system.

1 Push concurrently

+ CL +

TEST

buttons for 4 seconds or more.

2 Using the setup temp or button, specify the item code - . 3 Using the timer time or button, set  to the setup data. 4 Push 5 Push

3. Wiring

n Power peak-cut from indoor unit

When the relay is turned on, a forced thermostat-OFF operation starts.

button.

TEST

button. (The status returns to the usual stop status.)

CN61

T10

(YEL)

Indoor control P.C. board

Note) Determine the cable length between the indoor control P.C. board and the relay within 2m.

121

343

565

Relay (procured locally)

Power supply

Outside contact (Card switch box, etc: Procured locally)

* In the figure, the contact indicates a status that the card is taken out.

• Wiring example

CN73

EXCT

(2P plug: RED)

Indoor control P.C. board

121

Relay (procured locally)

Note) Determine the cable length between the indoor or

outdoor control P.C. board and the relay within 2m.

Relay coil signal

n Indoor P.C. Board

MCC-1510

HA (T10) CN61, DC 12V

Option output CN60, DC 12V

CHK CN71, DC 5V

DISP CN72, DC 5V

Outside error input CN80, DC 12V

EXCT CN73, DC 5V

Remote controller power LED D203

TCJ sensor CN102, DC 5V

TC sensor CN101, DC 5V

Microcomputer operation LED D02

EEPROM IC10

Inter-unit wire CN67, AC 200V

Option power supply CN309, AC 200V

Central control CN40, DC – 5V

TA sensor CN104, DC 5V

Remote controller CN41, DC 20V

Fan drive CN32, DC 12V

Louver CN33, DC 20V

DC fan input/output CN210

Terminator resistor provided/not provided Remote controller A/B switch SW01

Display output/Wireless sensor CN213, DC 5V

Wall-Type P.C. Board Optional Switch/Connector Specifications

Function

Terminator resistor provided/Not provided

Remote controller A/B

Fan output

Connector

No.

SW01

CN32

CN61

Pin No.

Bit 1

Bit 2

4 5 6 1 2 3

Specifications

OFF: No terminator resistor , ON: Terminator resistor provided

OFF: Remote controller A ON: Remote controller B

DC12V

Output

Start/Stop input

0V (COM)

Handy prohibition input

Operation output DC12V (COM) Alarm output DC12V (COM) Defrost output Thermo-ON output

Remarks

Setup at shipment OFF: No terminator resistor. Only 1 unit is ON during central control by custom only.

Setup at shipment OFF: Remote controller A

Setup at shipment: Link ed operation of ON with operation of indoor unit and OFF with stop

* The setup of single operation by FAN button on remote

controller is executed from remote controller. (DN = 31)

HA Start/Stop input (J01: Provided/Not provided = Pulse (At shipment from factory)/Static input switch)

Operation stop of handy remote controller is permitted / prohibited by input.

ON during operation (Answer back of HA)

ON during output of alarm

ON during defrosting of outdoor unit ON when Real thermo. ON (Comp. ON)

Optional output

Outside error input

CHK

Operation check

DISP

Display mode

EXCT

Demand

CN60

CN80

CN71

CN72

CN73

Cooling output

Heating output

Fan output

DC12V (COM)

Filter/Option/Outside error input

Check mode input

Display mode input

Demand input

ON when operation mode is cooling line (Cool, Dry , Cooing/Heating AUTO cooling)

ON when operation mode is heating line (Heat, Cooling/Heating AUT O heating)

ON when indoor fan is ON At shipment from factory, the error code “L30” gener ates and

optional error input to stop operation forcedly (DN:2A = 1) is controlled (Display of protection for de vices attached to outside) by setup of outside error input (DN:2A = 2) for 1 minute .

Optional error input control is set up on the remote controller.

This check is used for operation chec k of indoor unit. (The specified operation such as indoor fan “H”, drain pump ON, etc. is executed without communication with outdoor unit or remote controller.)

Display mode, communication is enab led b y indoor unit and remote controller only. (When power supply is turned on.)

Timer short (Usual)

Indoor unit forced thermo-OFF operation

7. TROUBLESHOOTING

7-1. Troubleshooting Summary

1. Before troubleshooting

1) Applied models All Super Module Multi-system type models (Indoor unit: MMX-APXXX, Outdoor unit: MMY-MAPXXX)

2) Required tools / measuring devices

• Screwdrivers (Philips, Minus), spanner, radio pinchers, nipper, push pin for reset switch, etc.

• Tester, thermometer, pressure gauge, etc.

3) Confirmation before check (The following items are not troubles.)

No.

Compressor does not operate.

Indoor fan does not work.

Outdoor fan does not rotate, or fan speed changes.

Indoor fan does not stop.

Start/stop operation on remote controller is unavailable .

Operation

——

Check items

• Is not delayed for 3 min utes? (3 minutes after compressor-OFF)

• Is not thermostat OFF?

• Is not the fan operating or timer?

• Is not the system initially communicating?

• Is not the cold draft prevention being controlled in heating operation?

• Is not low cooling operation being controlled?

• Is not a defrost operation being performed?

• Is not after-heat elimination operation being controlled after heating operation?

• Is not auxiliary unit or remote control being operated?

• Is connecting wire of indoor unit or remote controller correct?

2. Troubleshooting procedure

When a trouble occurred, advance the check operation in the following procedure.

Trouble

[E28]

error

Check the check display on the interface P.C. board of the header unit.

Check the check display on the interface P.C. board of the corresponding follower unit.

Check position or part in which trouble occurred.

NOTE) While a check operation is performed, a malfunction of the microprocessor may be caused due to

condition of the power supply or the external noise. If there is any noise source, change wires of the remote controller and signal wires to shield wires.

7-2. Check Method

On the remote controller (Main remote controller, Centr al control remote controller) and the interface P.C. board of the outdoor unit, a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation is provided. Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with trouble of the air conditioner can be found as shown in the table below.

7-2-1. Check Code List

The following list sho ws each check code. Find the chec k contents from the list according to part to be checked.

• In case of check from indoor remote controller : See “Main remote controller display” in the list.

• In case of check from outdoor unit: See “Outdoor 7-segment display” in the list.

• In case of check from TCC-LINK central control remote controller: See “TCC-LINK central control display” in the list.

• However connection with AI-NET central control is disabled for the wall type (3 series).

• In case of check from indoor unit with wireless remote controller: See “Sensor block display of receiving unit” in the list.

IPDU: Intelligent Power Drive Unit

: Lighting, ¤ : Flashing, l : Goes off

ALT.: Flashing is alternately when there are two flashing LED. SIM: Simultaneous flashing when there are two flashing LED.

Main

remote

controller

display

E01

E02

E03

E04

E06

—

E08

E09

E12

E15

E16

E18

E19

E20

E23

E25

E26

E28

E31

Check code

Outdoor 7-segment display

Sub code

——

No. of indoor units in which sensor

E06

has been normally received

E07 —

E08 Duplicated indoor addresses

——

01: Indoor/Outdoor communication

E12 02: Communication between

E15 —

E16

E19

E20

E23 —

E25 — E26 No. of outdoor units which

E28 Detected outdoor unit number

E31 04: Fan IPDU error

outdoor units

00: Capacity over 01: No. of connected units

——

00: No header unit 02: Two or more header units

01: Outdoor of other line connected 02: Indoor of other line connected

received signal normally

01: IPDU1 error 02: IPDU2 error 03: IPDU1, 2 error

05: IPDU + Fan IPDU error 06: IPDU2 + Fan IPDU error 07: All IPDU error

AI-NET

central control

display

—

97, 99

Wireless remote controller

Sensor block display

of receiving unit

Ready Timer

¤ ¤ ¤

¤ ¤

¤ ¤ ¤

Operation

¤ ¤ ¤

¤ ¤

Flash

Check code name

Communication error between indoor and remote controller (Detected at remote controller side)

Sending error of remote controller

Communication error between indoor and remote controller (Detected at indoor side)

Communication circuit error between indoor and outdoor (Detected at indoor side)

Decrease of No. of indoor units

Communication circuit error of indoor and outdoor (Detected at outdoor side)

Duplicated indoor addresses

Duplicated master remote controllers

Automatic address start error

No indoor automatic address

No. of connected indoor units / Capacity over

Communication error between indoor header and follower units

Outdoor header units quantity error

Other line connected during automatic address

Sending error in communication between outdoor units

Duplicated follower outdoor addresses

Decrease of No. of connected outdoor units

Follower outdoor error

IPDU communication error

Judging

device

Remote

controller

Remote

controller

Indoor

I/F

Indoor/I/F

Remote

controller

I/F

Indoor

I/F

Main

remote

controller

display

F01 F02 F03 F04 F05 F06 F07 F08 F10 F12

F13

F15 F16 F23 F24 F29 F31

H01

H02

H03

H04 H06 H07

H08

H14

H16

L03 L04

L05

L06

L07

L08

L09 L10

L20

L28

L29

L30

—

Check code

Outdoor 7-segment display

Sub code

—— ——

—— F04 — F05 — F06 — F07 — F08 —

—— F12 —

01: Comp. 1 side

F13

02: Comp. 2 side F15 — F16 — F23 — F24 —

——

F31 —

01: Comp. 1 side

H01

02: Comp. 2 side

01: Comp. 1 side

H02

02: Comp. 2 side

01: Comp. 1 side

H03

02: Comp. 2 side

H04 — H06 — H07 —

01: TK1 sensor error

02: TK2 sensor error

H08

03: TK3 sensor error

04: TK4 sensor error

H14 —

01: TK1 oil circuit system error

02: TK2 oil circuit system error

H16

03: TK3 oil circuit system error

04: TK4 oil circuit system error L03 — L04 —

L05 —

L06 No. of indoor units with priority

——

L08 —

——

L10 —

——

L28 —

01: IPDU1 error

02: IPDU2 error

03: IPDU3 error L29 04: Fan IPDU error

05: IPDU1 + Fan IPDU error

06: IPDU2 + Fan IPDU error

07: All IPDU error L30 Detected indoor address L31 —

AI-NET

central control

display

OF Od

93 19 A1 18 18 1b

18 43 43 43 12

44 20 d7

96 96

46 88

—

Wireless remote controller

Sensor block display

of receiving unit

Ready Timer

¤ ¤

¤ ¤ ¤

¤ ¤

Operation

¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤ ¤¤

¤¤ ¤¤

¤¤ ¤¤ ¤¤ ¤¤ ¤¤

—

Flash

ALT ALT ALT ALT ALT ALT ALT ALT ALT ALT

ALT

ALT ALT ALT ALT SIM SIM

SIM SIM

SIM

SIM SIM

SIM

Check code name

Indoor TCJ sensor error Indoor TC2 sensor error Indoor TC1 sensor error TD1 sensor error TD2 sensor error TE1 sensor error TL sensor error TO sensor error Indoor TA sensor error TS1 sensor error

TH sensor error

Outdoor temp sensor misconnecting (TE, TL) Outdoor pressure sensor misconnecting (Pd, Ps) Ps sensor error Pd sensor error Indoor other error Outdoor EEPROM error

Compressor break down

Magnet switch error Overcurrent relay operation Compressor error (lock)

Current detect circuit system error

Comp 1 case thermo operation Low pressure protective operation Oil level down detective protection

Oil level detective temp sensor error

Comp 2 case thermo operation

Oil level detective circuit error Magnet switch error Overcurrent relay operation

Duplicated indoor header units Duplicated outdoor line addresses Duplicated indoor units with priority

(Displayed on indoor unit with priority) Duplicated indoor units with priority

(Displayed in unit other than indoor unit with priority) Group line in individual indoor unit

Indoor group/Address unset

Indoor capacity unset Outdoor capacity unset

Duplicated central control addresses

Over No. of connected outdoor units

No. of IPDU error

Auxiliary interlock in indoor unit IC error

Judging

device

Indoor Indoor Indoor

I/F I/F I/F I/F I/F

Indoor

I/F

IPDU

I/F I/F I/F I/F

Indoor

I/F

IPDU

MG-SW

Overcurrent relay

IPDU

I/F I/F I/F

I/F

MG-SW

Overcurrent relay

Indoor

I/F

Indoor Indoor

I/F

Indoor

I/F

AI-NET

Indoor

I/F

Indoor

I/F

Main

remote

controller

display

P01 P03

P04

P05

P07

P12 P13

P15

P17 P19 P20

P22

P26

P29

P31

— — —

Check code

Outdoor 7-segment display

Auxiliary code

——

P03 —

01: Comp. 1 side

P04

02: Comp. 2 side

01: Phase-missing detection

P05

02: Phase order error

01: Comp. 1 side

P07

02: Comp. 2 side

——

P13 —

01: TS condition

P15

02: TD condition

P17 — P19 Detected outdoor unit number P20 —

0 : IGBT short

: Fan motor position detective

circuit error

3 : Fan motor trouble

P22

P26

P29

—— —— —— ——

: TH sensor temp. error

(Heat sink overheat)

D : TH sensor error

: Vdc output error

01: Comp. 1 side

02: Comp. 2 side

01: Comp. 1 side

02: Comp. 2 side

AI-NET

central control

display

11 47

bb 08 22

47 b7 97 99

Wireless remote controller

Sensor block display

of receiving unit

Ready Timer

¤¤ ¤

¤ ¤ ¤

¤¤ ¤¤

¤ ¤

By alarm device ALT

— —

Operation

¤ ¤

Flash

ALT ALT

ALT

ALT ALT

ALT

ALT ALT ALT

ALT

Check code name

Indoor fan motor error Discharge temp TD1 error

High-pressure SW detection error

Phase-missing detection / Phase order error

Heat sink overheat error

Indoor fan motor error Outdoor liquid back detection error

Gas leak detection

Discharge temp TD2 error 4-way valve inverse error High-pressure protective operation

Outdoor fan IPDU error

G-TR short protection error

Comp position detective circuit system error

Other indoor unit error (Group follower unit error) Error in indoor group AI-NET communication system error Duplicated network adaptors

Judging

device

Indoor

I/F

IPDU

I/F

IPDU

I/F

Indoor

I/F

I/F I/F I/F

Fan

IPDU

Indoor AI-NET AI-NET AI-NET

Error detected by TCC-LINK central control device

Central control

device

indication

C05 C06

C12

P30

Check code

Outdoor 7-segment display

Auxiliary code

—— ——

——

Differs according to error contents of unit with occurrence of alarm

——

AI-NET

central control

display

— —

—

Wireless remote controller

Sensor block display

of receiving unit

Ready Timer

(L20 is displayed.)

Operation

— —

—

Check code name

Flash

Sending error in TCC-LINK central control de vice Receiving error in TCC-LINK central control device Batch alarm of general-purpose equipment control

interface Group control follower unit error Duplicated central control addresses

Judging

device

TCC-LINK TCC-LINK

HA control interface

I/F

TCC-LINK

7-3. Troubleshooting by Check Display on Remote Controller

SET

TIME

TIMER SET

TEST

FILTER RESET

TEMP.

FAN

SAVE

SWING/FIX

VENT

MODE

ON / OFF

UNIT LOUVER

SET

7-3-1. In Case of Main Remote Controller (RBC-AMT32E)

1. Confirmation and check

When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller.

The check code is displayed while the air conditioner operates.

If the display disappeared, operate the air conditioner and check the error based upon the following “Confirmation of error history”.

2. Confirmation of error history

When a trouble occurred on the air conditioner, the error history can be confir med with the following procedure. (Up to 4 error histories are stored in memory.)

This history can be confirmed from either operating status or stop status.

Check code Indoor unit No. in which

an error occurred

Procedure

and

TEST

buttons simultaneously for 4 seconds or more, the below display appears.

TEST

button to return to the usual display.

When pushing

Service Check] is displayed, the mode enters in the error history mode.

If [

• [01: Error history order] is displayed in CODE No. window.

• [Check Code] is displayed in check code window.

• [Indoor unit address with error] is displayed in UNIT No.

Every pushing temp. set / buttons, the error histories stored in the memory are displayed in order. The numbers in CODE No. indicates CODE No. [01] (Latest) to [04] (Oldest).

CAUTION

Do not push CL button because all the error histories of the indoor unit will be deleted.

After confirmation, push

How to read the check monitor display

<7-segment display>

Description

89AbCdEFHJLP76543210

7-3-2. In Case of TCC-LINK Central Control Remote Controller (TCB-SC642TLE2)

ZONE

ALL

ZONE

GROUP

1234

SET DATA

SETTING

R.C.

UNIT No.

No.

TEST

CODE

No.

SELECT ZONE

SET

GROUP

1. Confirmation and check

When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller.

The check code is displayed while the air conditioner operates. If the display disappeared, operate the air conditioner and check the error based upon the following

“Confirmation of error history”.

Unit No display Alarm display

UNIT No.

Alternate flashing display

R.C No.

2. Confirmation of error history

When a trouble occurred on the air conditioner, the error history can be confirmed with the following procedure. (Up to 4 error histories are stored in memory.)

This history can be confirmed from either operating or stop.

1) Push and

2) SERVICE CHECK goes on and Item code 01 goes on.

3) When selecting (flash) the group number if there is the alarm history, the UNIT number and the latest alarm history are displayed alternately.

∗ In this time, the temperature cannot be set up.

4) To confirm the alarm history other than the latest one, push temp. set / to select Item code (01 to 04).

5) To confirm the alarm in the other group, push Do not push

6) To finish the service check, push button.

buttons in succession for 4 seconds or more.

SET

GROUP

ZONE

and

button because all the alarm histories of the currently selected group are deleted.

to select the group number.

Unit No display Alarm display

UNIT No.

Alternate flashing display

R.C No.

7-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit

(7-Segment Display of Interface)

Main

remote

controller

E01

E02

E03

E04

E06

—

E08

E09

Check code

Outdoor 7-segment display

Check code Sub-code

——

E06 No. of indoor units which

E07 —

E08 Duplicated indoor

received signal normally

addresses

——

AI-NET

central control

remote controller

—

Detected

position

Remote

controller

Remote

controller

Indoor

unit

Indoor

unit

I/F

Indoor

I/F

Remote

controller

Check code name

Communication error between indoor and remote controller (Detected at remote controller side)

Remote controller sending error

Communication error between indoor and remote controller (Detected at indoor side)

Indoor/outdoor communication circuit error (Detected at indoor side)

Decreased number of indoor units

Indoor/outdoor communication circuit error (Detected at outdoor side)

Duplicated indoor addresses

Duplicated master remote controllers

Status

Corresponding unit only stops.

All stop

Corresponding unit only stops.

Error detection condition

Communication interrupted between indoor P.C. board and remote controller.

Signal could not be sent from remote controller to indoor unit.

No communication from remote controller (including wireless) and communication adaptor.

Indoor unit does not receive communication from outdoor unit.

When signal is not sent for a certain period from the indoor unit which has been used to send signals, [E06] is normally displayed.

Transmission from outdoor to indoor cannot continue for 30 seconds.

Multiple indoor unit address setup are duplicated.

In 2-remote controller control (including wireless), both are setup as master (Header indoor unit stops and other indoor unit is operating.)

Check item (position)

• Check remote controller inter-unit wire (A/B).

• Check disconnection, connector contact error.

• Check indoor power supply.

• Check indoor P.C. board error.

• Check remote controller address setup. (When two remote controllers operate)

• Check remote controller P.C. board.

• Check the communication wire of remote controller: Exchange remote controller.

• Check remote controller and communication adaptor wiring.

• Check power-ON order of indoor/outdoor.

• Check indoor address setup.

• Check inter-unit wiring between indoor and outdoor.

• Check outdoor end terminal resistance setup (SW30-2).

• Check SW02 setup on the wall type P.C. board. (Should be Bit 1: ON, Bit 2: OFF)

• Check the power supply of indoor unit. (Power-ON)

• Check connection of communication line between indoor and outdoor.

• Check connector connection for communication in indoor P.C. board.

• Check connector connection for communication in outdoor P.C. board.

• Check indoor P.C. board failure.

• Check outdoor P.C. board (I/F) failure.

• Check outdoor end terminal resistance setup (SW30-2).

• Check the communication connection between indoor and outdoor.

• Check indoor address.

• Check the change of remote controller connection (Group / individual) after setup of indoor address.

• Check SW02 setup on the wall type P.C. board. (Should be Bit 1: ON, Bit 2: OFF)

• Check remote controller setup.

• Check remote controller P.C. board.

Main

remote

controller

E12

E15

E16

E18

E19

E20

E23

Check code

Outdoor 7-segment display

Check code Sub-code

E12 01: Indoor/outdoor

E15 —

E16 00: Capacity over

——

E19 00: No header unit

E20 01: Connection of outdoor of

E23 —

communication

02: Between outdoors

communication

01 to: No. of connected units

02: Two or more header units

other line

02: Connection of indoor of

other line

AI-NET

central control

remote controller

97, 99

Detected

position

I/F

Indoor

unit

I/F

Check code name

Automatic address start error

No corresponding indoor unit during automatic address

No. of connected indoor units / Capacity over

Communication error between indoor header and follower units

Outdoor header unit quantity error

Other line unit connected during automatic address

Communication sending error between outdoor units

Status

All stop

Corresponding

unit only stops.

All stop

Error detection condition

• When indoor automatic address started, other refrigerant circuit system was setting automatic address.

• When outdoor automatic address started, indoor automatic address was executed.

Indoor unit is not found when indoor automatic address start was set up.

• Total capacity of indoor units exceeded 135% of total outdoor capacity.

• No. of connected indoor units are more than 48 units.

[Note]

If this code appears after backup setup of outdoor unit trouble, set up “No capacity-over detection”.

Turn on SW09/Bit 2 on I/F P.C. board of outdoor header unit.

Regular communication between indoor header and follower units .

• There are multiple outdoor header units in 1 line.

• There is none of outdoor header unit in 1 line.

Unit of other line was connected when indoor automatic address started.

Transmission of other outdoor unit was unavailable for 30 seconds or more.

Check item (position)

• Setup the address again after disconnecting communication connection with other refrigerant circuit system.

• Check the communication line connection between indoor and outdoor.

• Check the electric power line error in indoor.

• Check the noise of surrounding devices.

• Power failure

• Check indoor P.C. board error.

• Check the connection capacity of indoor unit.

• Check the HP capacity of indoor unit.

• Check the indoor/outdoor capacity setup

• Check the No. of connected indoor units.

• Check the outdoor I/F P.C. board error

• Check wire of the remote controller.

• Check power wiring of indoor.

• Check P.C. board of indoor.

• Check SW02 setup on the wall type P.C. board. (Should be Bit 1: ON, Bit 2: OFF)

The outdoor unit connected with communication wire between indoor and outdoor (U1.U2) is the outdoor header unit.

• Check connection of communication line between indoor and outdoor.

• Check outdoor P.C. board(I/F) error.

Separate the wire between lines according to automatic address setup method in “Address setup”.

• Check the power of outdoor unit. (Is the power turned on?)

• Check connection of communication wire or disconnection between outdoor units.

• Check the connector for communication on outdoor P.C. board.

• Check outdoor P.C. board (I/F) error.

• Check the end terminal resistance setup for communication between outdoor units.

Main

remote

controller

E25

E26

E28

Check code

Outdoor 7-segment display

Check code Sub-code

E25 —

E26 No. of normally received

E28 No. of detected outdoor

outdoor units

units

AI-NET

central control

remote controller

Detected

position

I/F

Check code name

Duplicated outdoor follower address setup

Decreased number of connected outdoor units

Outdoor follower unit error

Status

All stop

Error detection condition

Outdoor addresses manually set up are duplicated.

The signal was not returned for constant from the outdoor unit which was receiving signal.

Outdoor header unit received error code from outdoor follower unit.

When pushing SW04 for 1 second or more under condition that [E28] is displayed on 7-segment display of outdoor header unit, the fan of outdoor unit which stopped abnormally starts rotating.

If pushing SW04 and SW05 simultaneously, the fan of normal outdoor unit operates. When pushing SW05 singly, the operation of fan is cleared.

Note)

Do not set up the outdoor address manually.

• Outdoor is performing backup.

• Check the power of outdoor unit. (Is the power turned on?)

• Check connection of inter-unit wire or disconnection between outdoor units.

• Check the connector connection for communication on outdoor P.C. board.

• Check outdoor P.C. board (I/F) error.

• Check the check code of outdoor follower unit.

Check item (position)

E31

F01

F02

F03

F04

F05

F06

E31 01: IPDU1 error

F04 —

F05 —

F06 —

02: IPDU2 error 03: IPDU1, 2 errors 04: Fan IPDU error 05: IPDU1 + Fan IPDU error 06: IPDU2 + Fan IPDU error 07: All IPDU error or

communication error between IPDU and I/F P.C. board or outdoor I/F P.C. board error

——

I/F

Indoor

unit

Indoor

unit

Indoor

unit

I/F

IPDU communication error

Indoor TCJ sensor error

Indoor TC2 sensor error

Indoor TC1 sensor error

TD1 sensor error

TD2 sensor error

TE1 sensor error

All stop

Corresponding

unit only stops.

Corresponding unit only stops.

All stop

Communication of each IPDU (P.C. board) in inverter box interrupted.

• Resistance value of sensor is infinite or zero. (Open/Short)

• Resistance value of sensor is infinite or zero (Open/Short).

• Check connection of communication connector and disconnection between IPDU and I/F P.C. board.

• Check outdoor P.C. board (I/F, IPDU, Fan IPDU) error.

• Check external noise.

• Check power supply P.C. board for fan error.

• Check connection/wiring of TCJ sensor connector.

• Check characteristics of TCJ sensor resistance value.

• Check indoor P.C. board error.

• Check connection/wiring of TC2 sensor connector.

• Check characteristics of TC2 sensor resistance value.

• Check indoor P.C. board error.

• Check connection/wiring of TC1 sensor connector.

• Check characteristics of TC1 sensor resistance value.

• Check indoor P.C. board error.

• Check connection of TD1 sensor connector.

• Check characteristics of TD1 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of TD2 sensor connector.

• Check characteristics of TD2 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of TE1 sensor connector.

• Check characteristics of TE1 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

Main

remote

controller

F07

F08

F10

F12

F13

F15

F16

F23

F24

F29

F31

H01

Check code

Outdoor 7-segment display

Check code Sub-code

F07 —

F08 —

——

F12 —

F13 01: Compressor 1 side

F15 —

F16 —

F23 —

F24 —

F31 —

H01 01: Compressor 1 side

02: Compressor 2 side

——

02: Compressor 2 side

AI-NET

central control

remote controller

Detected

position

I/F

Indoor

I/F

IPDU

I/F

Indoor

I/F

IPDU

Check code name

TL sensor error

TO sensor error

Indoor TA sensor error

TS1 sensor error

TH sensor error

Outdoor temp sensor miscabling (TE1, TL)

Outdoor pressure sensor miscabling (Pd, Ps)

Ps sensor error

Pd sensor error

Indoor other error

Outdoor EEPROM error

Compressor breakdown

Status

All stop

Corresponding unit only stops.

All stop

Corresponding unit only stops.

All stop (*1)

All stop

Error detection condition

• Resistance value of sensor is infinite or zero (Open/Short).

During operation of compressor in HEAT mode, the TE1 detection temp was higher than that of TL by the specified value continued for 3 minutes or more.

High-pressure Pd sensor and lowpressure Ps sensor were exchanged, or output voltages of both sensors are zero.

Output voltage of Ps sensor was zero.

Output voltage of Pd sensor was zero. (Sensor Open)

Pd > 4.15MPa during stop of compressor

Indoor P.C. board did not operate normally.

Outdoor P.C. board (I/F) did not operate normally.

Inverter current detection circuit detected over-current and stopped.

Check item (position)

• Check connection of TL sensor connector.

• Check characteristics of TL sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of TO sensor connector.

• Check characteristics of TO sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection/wiring of TA sensor connector.

• Check characteristics of TA sensor resistance value.

• Check indoor P.C. board error.

• Check connection of TS1 sensor connector.

• Check characteristics of TS1 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• IGBT built-in temp sensor error → Exchange IPDU P.C. board.

• Check installation of TE1 sensor and TL sensor.

• Check characteristics of TE1 and TL sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of high-pressure Pd sensor connector.

• Check connection of low-pressure Ps sensor connector.

• Check pressure sensors Pd and Ps error.

• Check outdoor P.C. board (I/F) error.

• Check compression error of compressor.

• Misconnection of Ps sensor and Pd sensor connectors

• Check connection of Ps sensor connector.

• Check Ps sensor error.

• Check compression error of compressor.

• Check 4-way valve error.

• Check outdoor P.C. board (I/F) error.

• Check SV4 circuit error.

• Check connection of Pd sensor connector.

• Check Pd sensor error.

• Check outdoor P.C. board (I/F) error.

• Check indoor P.C. board error (EEPROM error).

• Check power voltage.

• Check power noise.

• Check outdoor P.C. board (I/F) error.

• Check power voltage. (AC220–240V ± 10%).

• Check compressor error.

• Check cause of abnormal overload operation.

• Check outdoor P.C. board (IPDU) error.

(*1) All stop only in case of the header unit. The follower unit continues operation.

Main

remote

controller

H02

H03

H04

H06

H07

Check code

Outdoor 7-segment display

Check code Sub-code

H02 01: Compressor 1 side

H03 01: Compressor 1 side

H04 —

H06 —

H07 —

02: Compressor 2 side

AI-NET

central control

remote controller

Detected

position

IPDU

I/F

Check code name

Compressor error (lock) MG-SW error OCR operation

Current detection circuit system error

Compressor 1 case thermo operation

Low-pressure protective operation

Protection for oil level drop detection

Status

All stop

Error detection condition

Over-current was detected several seconds after header compressor had started.

While header compressor stopped, current flowed more than the specified current and was detected.

Compressor 1 case thermostat performed protective operation.

Low-pressure Ps detected operation lower than 0.02MPa.

The operating compressor detected oil shortage continuously for 2 hours.

Check item (position)

• Check compressor error.

• Check power voltage. (AC380 –10%, 415V +10%).

• Check cable of compressor and phase-missing.

• Check connector/terminal connection on IPDU P.C. board.

• Check conduction of case heater. (Check activation error due to liquid stagnation in compressor.)

• Check outdoor P.C. board (IPDU) error.

• Check outdoor MG-SW or OCR.

• Check wiring of current detection circuit system.

• Check outdoor P.C. board (IPDU) error.

• Check compressor 1 case thermo circuit. (Connector, wire, P.C. board)

• Check full opening of service valve. (Gas and liquid side)

• Check outdoor PMV clogging. (PMV1, 2)

• Check SV41 circuit leakage.

• Check miscabling/misinstallation of SV41 and SV42.

• Check valve open status of indoor PMV.

• Check compressor error.

• Check 4-way valve error.

• Check refrigerant shortage.

• Check full opening of service valve. (Gas and liquid side)

• Check outdoor PMV clogging. (PMV1, 2)

• Check SV41 circuit and SV42 circuit error.

• Check low-pressure Ps sensor error.

• Check indoor air filter clogging.

• Check valve open of indoor PMV.

• Check refrigerant pipe clogging.

• Check outdoor fan operation. (In heating mode)

• Check refrigerant shortage.

• Check full opening of service valve of balance pipe.

• Check connection and installation of TK1, TK2, TK3, and TK4 sensors.

• Check characteristics of TK1, TK2, TK3, and TK4 resistance values.

• Check gas leak and oil leak in the same line.

• Check refrigerant stagnation in compressor.

• Check error of SV3A, SV3B, SV3C, SV3D, and SV3E valves.

• Check clogging of oil separator oil return circuit.

• Check clogging of oil-equation circuit.

MG-SW : Magnet Switch OCR : Over-current Relay

Main

remote

controller

H08

H14

H16

Check code

Outdoor 7-segment display

Check code Sub-code

H08 01: TK1 sensor error

H14 —

H16 01: TK1 oil circuit

02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error

system error

02: TK2 oil circuit

system error

03: TK3 oil circuit

system error

04: TK4 oil circuit

system error

AI-NET

central control

remote controller

Detected

position

Check code name

I/F

Oil level detective temp sensor error

Compressor 2 case

I/F

thermo operation

Oil level detective

I/F

circuit system error MG-SW error OCR operation

MG-SW : Magnet Switch OCR : Over-current Relay

Status

All stop

Error detection condition

• Resistance value of sensor is infinite or zero. (Open/Short)

Compressor 2 case thermostat operated.

Temperature change of TK1 could not be detected though compressor 1 started the operation.

Temperature change of TK2 could not be detected though compressor 2 started the operation.

Temperature change of TK3 could not be detected though compressor started the operation.

Temperature change of TK4 could not be detected though compressor started the operation, or the difference from other TK sensor changed for a constant time only within the specified range.

Check item (position)

• Check connection of TK1 sensor connector.

• Check characteristics of TK1 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of TK2 sensor connector.

• Check characteristics of TK2 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of TK3 sensor connector.

• Check characteristics of TK3 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check connection of TK4 sensor connector.

• Check characteristics of TK4 sensor resistance value.

• Check outdoor P.C. board (I/F) error.

• Check compressor 2 case thermo circuit. (Connector, wire, P.C. board)

• Check full opening of service valve. (Gas and liquid side)

• Check outdoor PMV clogging. (PMV1, 2)

• Check SV42 valve leak.

• Check miswiring/misinstallation of SV41 and SV42.

• Check valve opening of indoor PMV.

• Check 4-way valve error.

• Check refrigerant shortage.

• Check compressor error.

• Check TK1 sensor coming-off.

• Check characteristics of TK1 sensor resistance value.

• Check TK1, TK2, TK3, and TK4 misconnection.

• Check operation error of SV3E valve.

• Check capillary clogging of oil-equation circuit and operation error of stop valve.

• Check refrigerant stagnation in compressor.

• Check MG-SW or OCR.

• Check TK2 sensor coming-off.

• Check characteristics of TK2 sensor resistance value.

• Check TK1, TK2, TK3, and TK4 misconnection.

• Check SV3E valve operation.

• Check capillary clogging of oil equalization circuit and check stop valve operation.

• Check refrigerant stagnation in compressor shell.

• Check MG-SW or OCR.

• Check TK3 sensor coming-off.

• Check characteristics of TK3 sensor resistance value.

• Check TK1, TK2, TK3, and TK4 misconnection.

• Check SV3E valve operation.

• Check capillary clogging of oil-equalization circuit and check valve operation.

• Check refrigerant stagnation in compressor shell.

• Check MG-SW or OCR.

• Check TK4 sensor coming-off.

• Check characteristics of TK4 sensor resistance value.

• Check TK1, TK2, TK3, and TK4 misconnection.

• Check SV3E valve operation.

• Check capillary clogging of oil-equalization circuit and check valve operation.

• Check refrigerant stagnation in compressor shell.

• Check MG-SW or OCR.

Main

remote

controller

L03

L04

L05

L06

L07

L08

L09

L10

L20

L28

L29

Check code

Outdoor 7-segment display

Check code Sub-code

——

L04 —

——

L06 No. of indoor units with

L08 —

L10 —

L28 —

L29 01: IPDU1 error

priority

——

02: IPDU2 error 03: IPDU1, 2 errors 04: Fan IPDU error 05: IPDU1 + Fan IPDU error 06: IPDU2 + Fan IPDU error 07: All IPDU error or

communication error between IPDU and I/F P.C. board, or outdoor I/F P.C. board error

AI-NET

central control

remote controller

Detected

position

Indoor

I/F

Indoor

I/F

AI-NET,

Indoor

I/F

Check code name

Duplicated indoor center units

Duplicated outdoor line address

Duplicated indoor units with priority (Displayed on indoor unit with priority)

Duplicated indoor units with priority (Displayed on the unit other than indoor unit with priority)

Group line in individual indoor unit.

Indoor group / address unset

Indoor capacity unset

Outdoor capacity unset

Duplicated central control addresses

Quantity over of connected outdoor units

IPDU quantity error

Status

Corresponding unit only stops.

All stop

Corresponding unit only stops.

All stop

Error detection condition

There are multiple center units in a group.

Line address setup is duplicated against the outdoor unit in different refrigerant pipe system.

Indoor units with priority were duplicated.

At least one indoor unit connected to a group existed in the individual indoor units.

Address was not yet set up.

Indoor unit capacity was unset.

On the I/F P.C. board for service, jumper line was not cut according to the model.

Duplicated central control addresses

There were more than four outdoor units.

No. of IPDU units detected when power was turned on were less.

Check item (position)

• Check indoor address.

• Check the change of remote controller connection (Group/individual) after indoor address setup.

• Check line address.

• Check display of indoor unit with priority.

• Check display of indoor unit with priority and outdoor unit.

• Check indoor address.

[Note]

After installation, this code is displayed when the power is firstly turned on.

Set up indoor capacity. (DN=11)

Check model setup on outdoor I/F P.C. board A’ssy for service.

• Check central control address.

• Check network adaptor P.C. board. (In case of AI-NET)

• Check No. of connected outdoor units. (Max. 4 units per 1 system)

• Check communication line between outdoor units.

• Check outdoor P.C. board (I/F) error.

• Check model setup for outdoor I/F service P.C. board.

• Check connection of UART communication connector.

• Check IPDU, fan IPDU, and I/F P.C. board error.

[Note]

UART: Universal Asynchronous Receiver Transmitter.

Main

remote

controller

L30

—

P01

P03

P04

P05

Check code

Outdoor 7-segment display

Check code Sub-code

L30 Detected indoor address

L31 —

——

P03 —

P04 01: Compressor 1 side

02: Compressor 2 side

P05 01: Power supply open phase

02: Power supply negative phase

AI-NET

central control

remote controller

—

Detected

position

Indoor

I/F

Indoor

I/F

Check code name

Interlock in indoor unit from outside

Extended IC (Integrated Circuit) error

Indoor fan motor error

Discharge temp TD1 error

Actuation of high-pressure SW

Open phase negative phase

Status

Corresponding

unit only stops.

Operation

continues.

Corresponding

unit only stops.

All stop

Error detection condition

• Outside error input terminal Detected signal to (CN80) for more 1 minute

P.C. board (I/F) parts error

Discharge temp (TD1) exceeded 115°C.

High-pressure SW actuated.

• Open phase was detected when the power turned on.

• Negative phase was detected when the power turned on.

Check item (position)

n Outside device is connected to connector (CN80):

1) Check outside device error.

2) Check indoor P.C. board error.

n Outside device is not connected to connector (CN80):

1) Check indoor P.C. board error.

Check indoor (I/F) P.C. board.

• Check the lock of fan motor (AC fan).

• Check wiring.

• Check full opening of outdoor service valves (Gas side, Liquid side).

• Check clogging of outdoor PMV. (PMV1,2)

• Check characteristics of TD1 sensor resistance value.

• Check refrigerant shortage.

• Check 4-way valve error.

• Check leakage of SV41 circuit.

• Check SV4 circuit. (Miscabling and misinstallation of SV41 and SV42)

• Check Pd pressure sensor error.

• Check full opening of outdoor service valves (Gas side, Liquid side).

• Check outdoor fan error.

• Check outdoor fan motor error.

• Check clogging of outdoor PMV. (PMV1,2)

• Check clogging of indoor/outdoor heat exchangers.

• Check short-circuiting of outdoor suction/discharge air.

• Check clogging of SV2 circuit.

• Check outdoor P.C. board (I/F) error.

• Check indoor fan system error. (Cause of air volume decrease)

• Check opening of indoor PMV.

• Check miswiring of communication line between indoor and outdoor.

• Check operation error of check valve of discharge pipe.

• Check SV4 valve circuit.

• Check SV5 valve circuit.

• Check refrigerant overcharge.

• Check outdoor power line.

• Check outdoor P.C. board (I/F) error.

Main

remote

controller

P07

P12

P13

P15

P17

P19

Check code

Outdoor 7-segment display

Check code Sub-code

P07 01: Compressor 1 side

P13 —

P15 01: TS condition

P17 —

P19 Detected

02: Compressor 2 side

——

02: TD condition

outdoor unit No.

AI-NET

central control

remote controller

Detected

position

IPDU

I/F

Indoor

I/F

Check code name

Heat sink overheat error

Indoor fan motor error

Outdoor liquid back detection error

Gas leak detection (TS1 condition)

Gas leak detection (TD condition)

Discharge temp TD2 error

4-way val ve operation error

Status

All stop

Corresponding unit only stops.

All stop

Error detection condition

IGBT built-in temp sensor (TH) was overheated.

• The value of motor speed deviated from target value was detected for certain time.

• Over-current protection operated.

While the system is operating in COOL mode, a high pressure value was detected in follower unit in which compressor did not operate.

While the system is operating in HEAT mode, outdoor PMV of which opening degree was 100p or less for a certain time.

Suction temp exceeded the judgment standard temp for 10 minutes or more.

In cooling operation: 60°C or higher In heating operation: 40°C or higher

Discharge temperature TD1 or TD2 was continuously 108°C or higher for 10 minutes.

Discharge temperature (TD2) exceeded 115°C.

When abnormal refrigerating cycle data was detected in heating

Check item (position)

• Check power voltage.

• Check outdoor fan system error.

• Check clogging of heat sink cooling duct.

• Check fixation between IGBT and heat sink. (Check screwing and contact.)

• Check IPDU error.(IGBT built-in temp sensor (TH) error)

• Check connection of fan connector and wiring.

• Check fan motor error.

• Check indoor P.C. board error.

• Check influence of outside air control.

• Check indoor type code (DN=10) and the capacity code (DN=11).

• Check full close operation of outdoor PMV (1, 2).

• Check Pd and Ps sensor error.

• Check clogging of SV2 circuit.

• Check clogging of balance pipe.

• Check clogging of SV3B circuit.

• Check outdoor P.C. board (I/F) error.

• Check capillary clogging of oil return circuit from oil separator.

• Check leakage of check valve of the main discharge pipe.

• Check refrigerant shortage.

• Check full open of outdoor service valves (gas side, liquid side).

• Check outdoor PMV clogging (PMV1, 2).

• Check characteristics of TS1 sensor resistance value.

• Check 4-way valve error.

• Check leakage of SV4 circuit.

• Check refrigerant shortage.

• Check outdoor PMV clogging (PMV1, 2).

• Check characteristics of TD1, TD2 sensor resistance value.

• Check indoor air filter clogging.

• Check pipe clogging.

• Check SV4 circuit (Valve leakage, misinstallation)

• Check full opening of outdoor service valves (gas side, liquid side).

• Check clogging of outdoor PMV (PMV1, 2).

• Check characteristics of TD2 sensor resistance value.

• Check 4-way valve error.

• Check leakage of SV42 circuit.

• Check SV4 circuit. (Miscabling and misinstallation of SV41 and SV42)

• Error of 4-way valve error

• Check coil error and connector connection of 4-way valve.

• Check characteristics of TS1/TE1 sensor resistance value.

• Check characteristics of Pd, Ps pressure sensor output voltage.

• Check misconnection of TE1 and TL sensors.

Main

remote

controller

P20

P22

Check code

Outdoor 7-segment display

Check code Sub-code

P20 —

P22 0: IGBT shortage

1: Position detection

circuit error 3: Motor lock error 4: Motor current error

detection C: TH sensor temp. error D: TH sensor error E: Vdc error

AI-NET

central control

remote controller

Detected

position

I/F

FAN-

IPDU

Check code name

High-pressure protective operation

Outdoor fan IPDU error

Status

All stop

Error detection condition

Pd sensor detected 3.6MPa or more.

(Sub-code: 0)

• Short-circuit current was detected at start time.

• Short-circuit current was detected when checking IGBT short-circuit before start time.

(Sub-code: 1)

• The standard value of detection circuit of fan IPDU current fluctuated at start time.

(Sub-code: 3)

• Abnormal current was detected within 30 seconds after start time.

(Sub-code: 4)

• Short-circuit current was detected when 2 seconds or more passed after start time.

• Over-current was detected when 30 seconds or more passed after start time.

(Sub-code: C)

• Heat sink sensor (TH) of fan IPDU detected 95°C error.

(Sub-code: D)

• Heat sink sensor (TH) of fan IPDU detected short-circuiting or open.

(Sub-code: E)

• Input power supply voltage of the fan IPDU over the setup value was detected.

• Input power supply terminal of the fan IPDU was unconnected.

• Power supply P.C. board error of the fan IPDU

Check item (position)

• Check Pd pressure sensor error.

• Check full opening of service valves (Gas side, Liquid side).

• Check outdoor fan error.

• Check outdoor fan motor error.

• Check clogging of outdoor PMV. (PMV1,2)

• Check clogging of indoor/outdoor heat exchangers.

• Check air short-circuiting in outdoor unit.

• Check clogging of SV2 circuit.

• Check outdoor P.C. board (I/F) error.

• Check indoor fan system error. (Cause of air volume decrease)

• Check valve opening of indoor PMV.

• Check miswiring of communication line between indoor and outdoor.

• Check operation error of check valve of discharge pipe.

• Check circuit of gas balance SV4 valve.

• Check circuit of SV5 valve.

• Check refrigerant overcharge.

• Check fan motor. (Interphase short-circuit)

• Check fan IPDU error.

• Check fan motor. (Lock, phase missing)

• Check cause of abnormal overload at start time.

• Check connection of connector to fan motor.

• Check power supply voltage.

• Check fan IPDU error.

• Check outdoor fan system.

• Check fan IPDU error.

• Check fixation between fan IPDU and heat sink.

• Check fan IPDU error.

• Check input power supply voltage of the fan IPDU.

• Check power supply P.C. board error of the fan IPDU.

• Check error of external electrolytic condenser.

Main

remote

controller

P26

P29

P31

Check code

Outdoor 7-segment display

Check code Sub-code

P26 01: Compressor 1 side

02: Compressor 2 side

P29 01: Compressor 1 side

02: Compressor 2 side

——

AI-NET

central control

remote controller

Detected

position

IPDU

Indoor

Check code name

G-Tr short-circuit protection error

Compressor position detection circuit error

Other indoor error (Group follower unit error)

Status

All stop

Corresponding

unit only stops.

Error detection condition

Instantaneous over-current was detected when compressor started.

Position was not normally detected.

E07/L07/L03/L08 was detected when other indoor unit in the group was defective.

Check item (position)

• Check connector connection and wiring on IPDU P.C. board.

• Check compressor error and defect of compressor coil.

• Check outdoor P.C. board (IPDU) error.

• Check connector connection and wiring.

• Check compressor error and defect of compressor coil.

• Check P.C. board (IPDU) error.

• Check indoor P.C. board.

Error detected by TCC-LINK central control device

Display on

central control

device

C05

C06

C12

P30

Check code

Outdoor 7-segment display

Check code Sub-code

—

Differs according

to error contents of the with alarm

(L20 is displayed.)

AI-NET

central control

remote controller

—

Detected

position

TCC-LINK

General-

purpose device

I/F

TCC-LINK

Error detected by AI-NET central control device

Main

remote

controller

—

Check code

Outdoor 7-segment display

Check code Sub-code

——

AI-NET

central control

remote controller

Detected

position

AI-NET

Check code name

TCC-LINK central control device transmission error

TCC-LINK central control device receiving error

Interface batch alarm of general-purpose control devices

Follower unit error of group control

Duplicated central control address

Check code name

AI-NET communication system error

Duplicated network adaptors

Error in indoor group

Status

Operation

continued.

Operation

continued.

Operation

continued.

Operation

continued.

Operation

continued.

Status

Operation

continued.

Operation

continued.

Operation

continued.

Error detection condition

Signal is not transmit from central control device.

Signal is not received from central control device.

Error was input in general-purpose control device control interface.

An error occurred in follower unit of the group control. ([P30] is displayed only on the central control remote controller.)

Central control addresses were duplicated.

Error detection condition

E07/L07/L03/L08 was detected when other indoor unit in the group was defective.

Multiple network adaptors were connected to communication line of remote controller. (Detected at central controller side)

Error of follower unit in the group

Check item (position)

• Check central control device error.

• Check communication line error of central control device.

• Check setup of end terminal resistance.

• Check central control device error.

• Check communication line error of central control device.

• Check setup of end terminal resistance.

• Check the power of connecting destination connected device.

• Check P.C. board error of the connected device.

• Check error input.

• Check the check code of the unit with alarm.

• Check the address setup.

Check item (position)

• Check multiple network adaptors.

• Check wire and miswiring of remote controller: Only one network adaptor can be connected to communication line of remote controller.

• Check communication line, miswiring, and power of indoor unit.

• Check communication. (X, Y terminals)

• Check network adaptor P.C. board.

• Check the central controller (Central control remote controller, etc.)

• Check follower unit in the group.

∗ These errors are concerned to communication of remote controllers (A, B) and central system [AI-NET X, Y], and the main remote controller displays [E01], [E02], [E03], [E09], or

[E18] in some cases and displays none in other cases according to the contents.

7-4-1. Cautions When Servicing for Compressor

1. Removing wires of both compressors check output of the inverter as described below.

7-4-2. How to Check Inverter Output

1. Turn off the power supply.

2. Remove the compressor lead cables from the compressors. (Be sure to remove lead cables of both compressors.)

3. Turn on the power supply and star t cooling or heating operation. In this time, pay attention to touch the fasten receptacle terminal lug of the compressor leads so that they

do not contact with other fasten receptacle terminal lug or other position (unit cabinet, etc.).

4. Check output voltage of compressor lead cable at inverter side. When the output voltage does not satisfy the criteria in the following table, replace IPDU P.C. board.

No.

1 2 3

∗ After checking the output, when connecting the compressor lead again to the compressor terminal, check

surely there is no distortion on the fasten terminal lug. If it is loosened, caulk it with pinchers, etc and then connect lead to the terminal.

Measured position

Between Red and White

Between White and Black

Between Black and Red

Criteria

400 V to 650 V 400 V to 650 V 400 V to 650 V

7-4-3. How to Check Resistance of Compressor Winding

1. Turn off the power supply.

2. Remove the compressor lead cables from the compressors. In each compressor, check the winding resistance between phases and resistance of the outdoor cabinet

using a tester.

• Is not it earthed?

→ Normal if 10MΩ or more are measured

• Is not shor ted between windings?

→ Normal if 0.7Ω to 0.9Ω are measured (Use a precise digital tester.)

7-4-4. How to Check the External Fan Motor

1. Turn off the power supply.

2. Take off three connectors (U.V.W) from the external fan IPDU P.C. board.

3. Turn the fan with hands. If the fan does not turn, it is a fan motor error (Lock). Replace the fan motor. If the fan turns, measure the winding resistance between the phases of the connector (Motor winding) with

a tester. If 13 to 33Ω are measured, it is normal. (Use a digital tester.)

7-5. Diagnosis Procedure for Each Check Code

Check code

[E01] / [–]

(Current code / AI-NET)

Is the inter-unit cable of

remote controllers (A/B) normal?

Is there no disconnection or

connector contact error on harness out

of terminal block of indoor unit?

Is a group control operation?

Check code name

Communication error between

indoor and remote controller

(Detected at remote controller side)

YES

Cause of operation

1. Remote controller inter-unit cable error

2. Indoor power error

3. Indoor P.C. board error

4. Remote controller address setup error

5. Remote controller P.C. board error

Correct inter-unit cable of

remote controller.

Correct connector connection

and check circuit cabling.

Is power of each indoor unit turned on?

YES

Is power applied to remote controller?

AB terminals: Approx. DC18V

YES

Is setup of two remote controllers

without main remote controller?

YES

Check power connection status of indoor unit. (Turn on power again.)

Check indoor P.C. board.

Defect → Replace

Change one to main/other to sub.

(Remote controller address connector)

Check remote controller P.C. board.

Defect → Replace

Check code

Check code name

Cause of operation

[E02] / [–]

(Current code / AI-NET)

Remote controller

sending error

Signal could not be sent to indoor unit. Check the communication wire of the remote controller.

∗ It is not displayed on 7-segment display of the central control controller.

Is communication cabling between

remote controller and indoor unit correct?

YES

Sending circuit error inside of the remote controller → Replace remote controller.

Check code

Check code name

Correct the communication cabling.

Cause of operation

[E03] / [97]

(Current code / AI-NET)

Communication error between

indoor and remote controller

No communication from remote controller and communication adaptor

(Detected at indoor side)

This error is detected when the indoor unit cannot receive a signal from the remote controller. Check communication cables of the remote controllers A and B. As communication is impossible, this check code [E03] is not displayed on the main remote controller. It is displayed on TCC-LINK central controller.

Check code

Check code name

Cause of operation

[E04] / [04]

(Current code / AI-NET)

communication circuit error

(Detected at indoor side)

Was power turned on in order of indoor unit → outdoor unit?

YES

Is connection (U1/U2 terminals) of

indoor/outdoor inter-unit cable normal?

YES

Is connector connection from

U1/U2 terminals of indoor/outdoor

inter-unit cable normal?

YES

Indoor/Outdoor

1. Power of outdoor unit was firstly turned on.

2. Connection error of communication line between indoor and outdoor

3. End terminal resistance setup error on communication between indoor and outdoor

4. Address setup error

5. Switch setup error of wall type P.C. board

Turn on power again in order of

indoor unit → outdoor unit.

Correct inter-unit cable.

Correct connector connection.

Is setup of the model SELECT SW

(SW02) on wall type P.C. board of normal?

Bit 1: ON Bit 2: OFF

YES

Is the end terminal resistance

setup of outdoor unit normal?

YES

Is address setup correct?

YES

Is power applied to fuse (F03)

on indoor P.C. board?

YES

Is there no noise, etc?

YES

Correct switch setup.

Correct the end terminal resistance setup.

Set up address again.

Check connection of inter-unit cable between indoor and outdoor is correct, and then connect communication line connector on indoor P.C. board (CN40) to CN44 (EMG).

Check noise, etc, and eliminate it if any.

Check indoor P.C. board.

Defect → Replace

For details, refer to “Troubleshooting in test operation”.

Check code

Check code name

Cause of operation

[E06] / [04]

(Current code7 / AI-NET)

Decreased number

of indoor units

Sub-code: No. of indoor units which received signals normally

Is there no miscabling/

disconnection on communication line

betweenindoor and outdoor?

Is connection of CN40 connector

on indoor P.C. board normal?

YES

1. Communication lines (U1, U2) connection error between indoor and outdoor

2. Connector connection error of communication for indoor P.C. board

3. Connector connection error of communication for outdoor I/F board

4. Power supply of indoor unit (Is power turned on?)

Correct communication line.

Is connection of CN01 connector

on outdoor I/F P.C. board normal?

YES

Is power of indoor turned on?

YES

Did a power failure occur?

YES

Is there no noise, etc?

Check indoor P.C. board.

Defect → Replace

YES

Correct cabling of cable connector.

Turn on power of indoor unit.

Clear the check code.

Check noise, etc, and eliminate it if any.

(NOTE)

1. When signal is not sent for a certain period from the indoor unit which has used to send signals normally, [E06] is displayed.

Check code

Check code name

Cause of operation

[E07] / [–]

(Current code / AI-NET)

Correct

communication line.

Indoor/Outdoor

communication circuit error

(Detected at outdoor side)

Is setup of end terminal resistance

of outdoor unit normal?

YES

Is inter-unit cable (U1, U2) between

indoor and outdoor short-circuited?

Is connection of inter-unit cable

between indoor and outdoor correct?

YES

1. Indoor/outdoor communication end terminal resistance setup error

2. Indoor/outdoor communication connection error

Correct setup of end

YES

Correct short-circuit.

terminal resistance.

YES

Correct power cable.

YES

Eliminate noise.

Is there no error on

power cable to outdoor unit?

Is there noise source?

Outdoor I/F P.C. board failure

→ Replace

Is F400 (fuse) on

I/F P.C. board opened?

YES

* Check conduction

with tester.

Turn on power to start operation.

I/F P.C. board failure However an emergent operation is available by inserting connector to be connected to CN01 to CN33.

Check code

Check code name

Cause of operation

[E08] / [96]

(Current code / AI-NET)

Duplicated indoor addresses

1. Indoor addresses are duplicated.

2. Switch setup error of wall type P.C. board

Sub-code: Duplicated indoor address

Using a main remote controller (RBC-AMT32E), check the setup item codes (DN code) 12, 13, and 14. When there is no address duplication, check to the following flowchart.

Is cable connection to

communication line normal?

YES

Is setup of the model SELECT SW

(SW02) on wall type P.C. board of normal?

Bit 1: ON Bit 2: OFF

YES

Is not communication line connected

to the different outdoor unit?

Correct cable connection.

Correct switch setup.

YES

Is indoor unit quantity connected

to outdoor unit correct?

YES

Set up indoor address again.

Check code

[E09] / [99]

(Current code / AI-NET)

Are two remote controllers set up

as two master remote controllers?

Check code name

Duplicated master

remote controller

YES

Correct communication line.

Cause of operation

Setup of master remote controller is duplicated.

Correct setup of remote controllers as a master:

a other. (Remote controller address connector)

Check remote controller P.C. board.

Failure → Replace

Check code

Check code name

Cause of operation

[E12] / [42]

(Current code / AI-NET)

Automatic address

start error

1. When indoor automatic address started, other refrigerant circuit system was setting automatic address.

2. When outdoor automatic address started, the indoor automatic address was being set. (Sub-code: 02)

Sub-code: 01: Communication between indoor and outdoor 02: Communication between outdoor units

Are U1, U2, U3, and U4

connectors connected?

YES

Disconnect connector connection

of U1, U2, U3, and U4.

Check code

[E15] / [42]

(Current code / AI-NET)

Turn on power of

outdoor unit again.

Check code name

No corresponding indoor unit

during automatic address

(Refer to “Address setup procedure”.)

Set up address again.

Cause of operation

1. Communication line connection error between indoor and outdoor.

2. Indoor power system error

3. Noise from surrounding devices

4. Power failure

5. Indoor P.C. board error

Is communication line between

indoor and outdoor normal?

YES

Is connection of CN40 connector

on indoor P.C. board correct?

YES

Is connection of CN01

connector on I/F P.C. board of

header outdoor unit correct?

YES

Is there any connection

error of power cable?

Did a power failure occur?

Is there no noise source?

YES

Correct communication line.

Correct connection of connector.

Correct power cable.

Set up address again after

resetting power supply.

Eliminate noise.

Set up address again

after resetting power supply.

Check code

Check code name

Cause of operation

[E16] / [89]

(Current code / AI-NET)

Connected indoor units

capacity over

Sub-code: 00 : Capacity over 49 to 64 of connected units

Is backup operation of outdoor unit being set up?

Is No. of connected indoor units correct?

YES

Is setup of indoor unit HP correct?

YES

Is total capacity of connected

indoor units within 135%?

YES

1. There are 48 or more connected indoor units.

2. Capacity over of total connected indoor units.

3. Incorrect setup of indoor/outdoor capacity

Perform setup of no detection

for capacity over. (∗1)

Excessive indoor units are connected.

Correct miscabling.

Correct HP setup.

Set capacity of connected

indoor units within 135% of outdoor units.

YES

For a service P.C. board, check outdoor HP setup.

(Set up jumper 9, 10, 11, and 12.)

Check outdoor interface P.C. board A’ssy.

(Refer “How to exchange interface P.C. board”.)

Set up outdoor HP.

(*1) Setup of no detection of capacity over

Turn SW09 Bit 2 on I/F P.C. board of header outdoor unit to ON. (Usually OFF)

Check code

Check code name

Cause of operation

[E18] / [97/99]

(Current code / AI-NET)

Are remote controller

inter-unit cables (A/B) normal?

Is there any disconnection of

connector or wiring from terminal block

of indoor unit?

Is a group control operation?

Are powers of

all indoor units turned on?

Communication error between

indoor header and follower

YES

1. Regular communication between indoor header and follower is unavailable.

2. Switch setup error of wall type P.C. board

Correct remote controller

inter-unit wire.

Correct connection of connector.

Check circuit wire.

Check power connection status

of indoor unit.

YES

Is setup of the model SELECT SW

(SW02) on wall type P.C. board of normal?

Bit 1: ON Bit 2: OFF

YES

Check indoor address.

Correct indoor address.

Correct switch setup.

Check indoor P.C. board.

Failure → Replace

Check code

Check code name

Cause of operation

[E19] / [96]

(Current code / AI-NET)

Header outdoor units

quantity error

Sub-code: 00: No header unit 02: Two or more header units

Are not communication lines (U1, U2)

between indoor and outdoor connected

to multiple outdoor units?

Is communication line between indoor and

outdoor connected to one unit per 1 system?

YES

Check I/F board.

YES

Reference)

An outdoor unit connected with communication wires (U1, U2) between indoor and outdoor is the header unit.

1. Misconnection of inter-unit cable between indoor and outdoor

2. Outdoor I/F P.C. board error

Connect communication line between indoor and outdoor to one unit per 1 system.

Connect communication line between indoor and outdoor.

Check code

[E20] / [42]

(Current code / AI-NET)

Check code name

Unit connected to other line

during automatic address

Cause of operation

When starting automatic indoor address, a device in other line is connected.

Sub-code: 01: Connection of outdoor in other line 02: Connection of indoor unit in other line

Separate the wire between lines according to address setup method.

Check code

Check code name

Cause of operation

[E23] / [15]

(Current code / AI-NET)

Is there no miscabling or

disconnection on communication line

between outdoor units?

Is connection of CN03 connector

on outdoor I/F P.C. board normal?

YES

Is not main power of

outdoor unit turned off?

Communication sending error

between outdoor units

YES

1. Inter-unit cable connection error between outdoor units

2. Communication connector connection error between outdoor units, I/F P.C. board error

3. End terminal resistance setup error between outdoor units

Correct communication line.

Correct cabling of cable connector.

Turn on main power of outdoor unit.

Is the end terminal resistance

between outdoor units turned on?

(SW30 Bit 1)

YES

Did power failure occur?

Is there no noise source, etc?

Check outdoor I/F P.C. board.

Defect → Replace

Turn the end terminal resistance to ON.

YES

Clear check code.

YES

Check and eliminate noise, etc

Check code

Check code name

Cause of operation

[E25] / [15]

(Current code / AI-NET)

Duplicated follower

outdoor address setup

Do not set up outdoor address manually.

Check code

[E26] / [15]

(Current code / AI-NET)

Check code name

Decrease of

connected outdoor units

Sub-code: No. of outdoor units which received signals normally

Addresses are duplicated by manual setup of outdoor address

Cause of operation

1. Outdoor unit backup setup

2. Outdoor power error

3. Communication line connection error between outdoor units

4. Connector connection error for communication

5. Outdoor I/F P.C. board error

Is outdoor unit setting backup?

Is main power of follower unit turned on?

YES

Is communication line between

outdoor units connected normally?

YES

Is communication connector (CN03)

between follower outdoor units connected?

YES

Check I/F P.C. board.

YES

Clear the error, and then start operation. (∗1)

Turn on the main power supply.

Correct connection of communication line.

Correct connector connection.

(Communication connector: CN03)

(∗1) How to clear the error

Set SW01/SW02/SW03 on I/F P.C. board of header unit to 2/16/1, and push SW04 for 5 seconds or more. (7-segment display: [Er.] [CL])

Check code

Check code name

Cause of operation

[E28] / [d2]

(Current code / AI-NET)

Follower outdoor unit error

Follower outdoor error

Sub-code: Detected outdoor unit No.

An error occurred on the follower unit. Check the check code of follower unit on 7-segment display on I/F P.C. board of follower unit, and then check according to Diagnose procedure for each check code. (How to specify the follower outdoor unit in which error occurred)

If pushing SW04 for 1 second or more under condition that [E28] is displayed on 7-segment display of the header unit, the fan of the outdoor which stopped due to occurrence of error starts rotating. When pushing SW05 singly, the fan operation is cleared.

Check code

[E31] / [CF]

(Current code / AI-NET)

Check code name

IPDU communication error

1. Connection error of communication line between IPDU and I/F P.C. board

2. I/F P.C. board error

3. IPDU P.C. board error

4. External noise

Cause of operation

Sub-code:

01: IPDU1 error 02: IPDU2 error 03: IPDU1, 2 error 04: Fan IPDU error 05: IPDU1, fan IPDU error 06: IPDU2, fan IPDU error 07: All IPDU error or communication line error between IPDU-I/F P.C. boards, or outdoor I/F P.C. board error

∗ If the fan IPDU is abnormal, be sure to check the voltage output on the fan power supply P.C. board.

Is communication connector between

IPDU and I/F P.C. board connected?

YES

Is there no disconnection on communication

line between IPDU and I/F P.C. board?

Is there voltage deflection between

4 and 5 pin of CN600 on I/F P.C. board?

(Measurement with tester: DC0 to 5V, 5 pins GND)

YES

Correct connection of connector.

YES

Replace communication line.

I/F P.C. board error

Is there voltage deflection between

3 and 5 pin of CN600 on I/F P.C. board?

(Measurement with tester: DC0 to 5V, 5 pins GND)

YES

Replace defective IPDU P.C. board.

All IPDU (No.1, No.2) and three fan IPDU do not return communication.

I/F P.C. board error

Check code

Check code name

Cause of operation

[F01] / [0F]

(Current code / AI-NET)

Is TCJ sensor connector (CN102: Yellow)

on indoor P.C. board normally connected?

YES

Are characteristics of TCJ sensor

resistance value normal?

YES

Check indoor main P.C. board.

Defect → Replace

Indoor TCJ sensor error

TCJ sensor Open/Short

* Indoor unit temperature sensor characteristics

See Characteristics-2.

Correct connection of connector.

Replace TCJ sensor.

Check code

[F02] / [0d]

(Current code / AI-NET)

Is TC2 sensor connector (CN101: Blue)

on indoor P.C. board normally connected?

YES

Are characteristics of TC2 sensor

resistance value normal?

YES

Check indoor main P.C. board.

Defect → Replace

Indoor TC2 sensor error

Check code name

* Indoor unit temperature sensor characteristics

See Characteristics-2.

Cause of operation

TC2 sensor Open/Short

Correct connection of connector.

Replace TC2 sensor.

Check code

Check code name

Cause of operation

[F03] / [93]

(Current code / AI-NET)

Is TC1 sensor connector (CN100: Brown)

on indoor P.C. board normally connected?

YES

Are characteristics of TC1 sensor

resistance value normal?

YES

Check indoor main P.C. board.

Defect → Replace

Check code

Indoor TC1 sensor error

[F04] / [19]

(Current code / AI-NET)

∗ Indoor unit temperature sensor characteristics

See Characteristics-2.

Check code name

TD1 sensor error

TC1 sensor Open/Short

Correct connection of connector.

Replace TC1 sensor.

Cause of operation

TD1 sensor Open/Short

This error code means detection of Open/Short of TD1 sensor. Check disconnection of circuit for connection of connector (TD1 sensor: CN502, White) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace outdoor I/F P.C. board.

Check code

[F05] / [A1]

(Current code / AI-NET)

Check code name

TD2 sensor error

TD2 sensor Open/Short

Cause of operation

This error code means detection of Open/Short of TD2 sensor. Check disconnection of circuit for connection of connector (TD2 sensor: CN503, Pink) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace outdoor I/F P.C. board.

Check code

[F06] / [18]

(Current code / AI-NET)

Check code name

TE1 sensor error

Cause of operation

TE1 sensor Open/Short

This error code means detection of Open/Short of TE1 sensor. Check disconnection of circuit for connection of connector (TE1 sensor: CN505, Green) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace outdoor I/F P.C. board.

Check code

Check code name

Cause of operation

[F07] / [18]

(Current code / AI-NET)

TL sensor error

TL sensor Open/Short

This error code means detection of Open/Short of TL sensor. Check disconnection of circuit for connection of connector (TL sensor: CN521, White) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace outdoor I/F P.C. board.

Check code

[F08] / [1b]

(Current code / AI-NET)

Check code name

TO sensor error

Cause of operation

TO sensor Open/Short

This error code means detection of Open/Short of TO sensor. Check disconnection of circuit for connection of connector (TO sensor: CN507, Yellow) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace outdoor I/F P.C. board.

Check code

[F10] / [0C]

(Current code / AI-NET)

Check code name

Indoor TA sensor error

TA sensor Open/Short

Cause of operation

This error code means detection of Open/Short of TA sensor. Check disconnection of circuit for connection of connector (TA sensor: CN104, White) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace indoor P.C. board.

Check code

[F12] / [A2]

(Current code / AI-NET)

Check code name

TS1 sensor error

Cause of operation

TS1 sensor Open/Short

This error code means detection of Open/Short of TS1 sensor. Check disconnection of circuit for connection of connector (TS1 sensor: CN504, White) and characteristics of

sensor resistance value. (Refer to Outdoor unit temperature sensor characteristics.) If sensor is normal, replace outdoor I/F P.C. board.

Check code

Check code name

Cause of operation

[F13] / [43]

(Current code / AI-NET)

TH sensor error

IGBT built-in sensor error in A3-IPDU

Sub-code: 01: Compressor 1 side 02: Compressor 2 side

This error code means IGBT built-in temperature sensor error. Check connection of connectors CN06 on IPDU P.C. board and CN600 on I/F P.C. board. If sensor is normal, replace IPDU P.C. board.

Check code

[F15] / [18]

(Current code / AI-NET)

Check code name

Outdoor temp sensor

miscabling (TE1, TL)

1. Misinstallation and misconnection of TE1 sensor and TL sensor

2. Resistance characteristics error of TE1 sensor and TL sensor

3. Outdoor P.C. board (I/F) error

Cause of operation

Are installed positions of

TE1 sensor and TL sensor correct?

YES

Are connection of TE1 sensor connector

and TL sensor connector normal?

YES

Are resistance characteristics of

TL sensor and TE1 sensor normal?

YES

Check outdoor I/F P.C. board.

Defect → Replace

∗ TE1 sensor : Outdoor heat exchanger temp sensor

TL sensor : Temp sensor between liquid tanks of outdoor PMV1/2

Outdoor I/F P.C. board TE1 sensor : CN505, Green TL sensor : CN521, White

∗ Outdoor unit temperature sensor characteristics

See TE1 sensor : Characteristics-5 See TL sensor : Characteristics-2.

Correct installed positions of

TE1 sensor and TL sensor.

Correct connection of connectors.

Check code

Check code name

Cause of operation

[F16] / [43]

(Current code / AI-NET)

Are connection of Pd sensor and

Ps sensor connectors correct?

YES

Are output voltage characteristics of

Pd sensor and Ps sensor normal?

YES

Are Pd/Ps output values Pd>Ps

during compressor operation?

YES

Outdoor pressure sensor

miscabling (Pd, Ps)

* 1 Pressure (Check joint) by pressure gauge

2 Pressure display on 7-segment display 3 Output voltage of I/F P.C. board

If 1 and 2, 3 are different, an error of pressure sensor itself is considered. If 2 and 3 are different, check interface P.C. board.

* Value can be confirmed by 7-segment display function on outdoor I/F P.C. board.

1. High-pressure Pd sensor and low-pressure sensor Ps are exchanged.

2. Output voltage of each sensor is zero.

Correct connection of connectors. Pd sensor: CN501, Red Ps sensor: CN500, White

Sensor error → Replace

Check compressor.

Check outdoor I/F P.C. board.

Defect → Replace

Pd SW01/02/03=1/1/2 Ps SW01/02/03=1/2/2

Check code

Check code name

Cause of operation

[F23] / [43]

(Current code / AI-NET)

Is connection of Ps sensor

connector correct?

YES

Are output voltage characteristics

of Ps sensor normal?

YES

Is there no leakage

from SV4 valve?

YES

Ps sensor error

Connector: CN500, White

∗ 1 Pressure (Check joint) by pressure gauge

2 Pressure display on 7-segment display 3 Output voltage of I/F P.C. board

If 1 and 2, 3 are different, an error of pressure sensor itself is considered. If 2 and 3 are different, check interface P.C. board.

NO NO

Is not refrigerant by

passed from discharge to

suction of 4-way valve?

YES

Output voltage error of Ps sensor

Correct connection of connector.

Sensor error

Check compressor.

Replace SV4 valve.

Check code

[F24] / [43]

(Current code / AI-NET)

Check code name

Pd sensor error

Check 4-way valve.

Cause of operation

Output voltage error of Pd sensor

It is output voltage error of Pd sensor. Check disconnection of connection of connector (Pd sensor: CN501) circuit and output voltage of sensor. If the sensor is normal, replace outdoor I/F P.C. board.

Check code

Check code name

Cause of operation

[F29] / [12]

(Current code / AI-NET)

Indoor other error

Indoor P.C. board error EEROM error

This error is detected during operation of air conditioner of IC10 non-volatile memory (EEPROM) on indoor unit P.C. board. Replace service P.C. board.

∗ If EEPROM was not inserted when power was turned on or it is absolutely impossible to read/write EEPROM

data, the automatic address mode is repeated. In this case, [97 error] is displayed on AI-NET central controller.

(Approx. 3 minutes) (Approx. 1 minute)

(Power ON) [SET DATA] is displayed

on main remote controller.

[SET DATA] disappears.

(Repetition)

LED (D02) 1Hz flashes

for approx. 10 seconds

on indoor unit P.C. board.

Repeat (Reset)

Check code

[F31] / [1C]

(Current code / AI-NET)

Is there any trouble of

outdoor unit power supply?

Check I/F P.C. board.

Check code name

Outdoor EEPROM error

YES

Cause of operation

1. Outdoor unit power error (Voltage, noise, etc.)

2. Outdoor I/F P.C. board error

Check power voltage and line. Correct power line. Check external noise, etc.

Check code

Check code name

Cause of operation

[H01] / [1F]

(Current code / AI-NET)

Compressor breakdown

Sub-code: 01: Compressor 1 side 02: Compressor 2 side

Is power voltage of outdoor unit normal?

YES

Does voltage drop occur

when other compressor starts?

Is connection of wiring or connection of

connector on IPDU P.C. board normal?

∗ 380 – 415V ± 10%

YES

1. Outdoor unit power line error

2. Compressor circuit system error

3. Compressor error

4. Cause of abnormal overload operation

5. IPDU P.C. board error

Correct power line.

Correct connector connection or wiring.

YES

Is winding resistance

between phases of corresponding

compressor normal? (Note 1)

YES

Is not it an abnormal overload?

Check IPDU P.C. board.

YES

Take off lead cable of compressor.

1. Check resistance between windings: It is normal if there are 0.7Ω to 0.9Ω.

2. Check insulation between outdoor cabinet and terminal: It is normal if there are 10MΩ or more.

Note 1

∗ After checking the output, when connecting the compressor

lead again to the compressor terminal, check surely there is no distortion on the Fasten receptacle terminal.

If it is loosened, caulk it with pinchers, etc and then connect lead to the terminal firmly.

Compressor error

(Motor burning, etc.)

Correct cause of overload.

Details of compressor

power connecting section

Check code

Check code name

Cause of operation

[H02] / [1d]

(Current code / AI-NET)

Compressor error (Lock)

Sub-code: 01: Compressor 1 side 02: Compressor 2 side

Is power voltage of

outdoor unit normal? *1

YES

Does voltage drop occur

when other compressor starts?

Does OCR of MG-SW operate?

*1 380–415V ± 10%

YES

1. Outdoor unit power line error

2. Compressor circuit system error

3. Compressor error

4. Refrigerant stagnation in compressor shell

5. IPDU P.C. board error

Correct power line.

Reset OCR manually. *3

Is wiring or connector connection

on IPDU P.C. board normal?

YES

Is not it an abnormal overload?

Is there no refrigerant stagnation

in compressor shell?

Operation starts.

Is compressor normal? *2

YES

Check IPDU P.C. board.

YES

YES YES

Is case heater output normal?

Check case heater.

Correct connector connection

or wiring.

Correct cause of overload.

Correct refrigerant stagnation

in compressor shell.

Compressor error

*2 Check the following items mainly.

1. Existence of abnormal sound and abnormal vibration during operation or starting

2. Abnormal overheat of case during operation or stop time (Never touch with hands.)

3. Current of compressor lead during operation or starting time (No varied change of current) change

*3 If OCR operates even after manual reset of OCR, check whether the wiring to the

current sensor (TO2) of Comp-IPDU is correct or not.

Check code

Check code name

Cause of operation

[H03] / [17]

(Current code / AI-NET)

Current detective

circuit system error

1. Cabling or connector connection error on IPDU P.C. board

2. IPDU P.C. board error

Sub-code: 01: Compressor 1 side 02: Compressor 2 side

Wiring or connector connection

on IPDU P.C. board normal?

YES

Check IPDU P.C. board.

Correct connector connection or cabling.

Check code

Check code name

Cause of operation

[H04] / [44]

(Current code / AI-NET)

[H14] / [44]

(Current code / AI-NET)

Is case thermo circuit normal?

1. Connector connection

2. Cabling

3. I/F P.C. board

(Note 1)

YES

Are service valves of

gas pipe and liquid pipe of

outdoor unit fully opened?

YES

Are outdoor PMV1/2 normal?

1. Connector connection

2. Cabling

3. Coil

4. Valve body

5. I/F P.C. board

Compressor 1 case thermo operation

Compressor 2 case thermo operation

(Note 1)

1. Case thermo is usually closed.

2. Operation temperature of case thermo is 120˚C.

Connector CN300, 301, White

1. Case thermo circuit error

2. I/F P.C. board error

3. Service valve closed

4. Outdoor PMV clogging

5. SV4 valve leak, Coil misinstallation

6. 4-way valve error

7. Compressor error

8. Refrigerant shortage

Repair case thermo circuit.

Open service valves fully.

Repair outdoor PMV.

YES

Operation starts.

Are SV41 and

Valve circuits normal?

1. Misinstallation installation and connector connection of SV41 and SV42

2. Leakage from SV41, 42 circuit

YES

Does not refrigerant

bypass from discharge of

suction through 4-way valve?

Is compressor normal? (Note 2)

YES

(Note 2)

Check the following items mainly.

1. Existence of abnormal sound and abnormal vibration during operation at start time

2. Abnormal overheat of case during operation or stop (Never touch with hands.)

3. Current of compressor lead during operation or starting (No rapid current change)

Correct SV4 valve circuits.

SV4 valve: Connector CN311, Blue

YES

Check 4-way valve.

Compressor error

Refrigerant shortage,

clogging, pipe breakage

(After checking there is no slogging or pipe breakage, charge refrigerant again.)

Check code

Check code name

Cause of operation

[H06] / [20]

(Current code / AI-NET)

Are service valves of gas and

liquid pipe of outdoor unit fully opened?

Are characteristics of

low-pressure sensor normal?

Are SV2 and SV4 circuits normal?

Is not indoor unit with

different circuit connected?

Low-pressure

protective operation

YES

1. Service valve close

2. Ps sensor error

3. SV2, SV4 circuit error

4. Miscabling of communication between indoor and outdoor

5. Indoor/outdoor fan and condenser error

6. Indoor/outdoor PMV clogging

7. Indoor/outdoor heat exchanger clogging

8. Refrigerant shortage

* 1 Pressure by pressure gauge (Check joint)

2 Pressure display on 7-segment display 3 Output voltage of I/F P.C. board

If 1 and 2, 3 are different, an error of pressure sensor error is considered. If 2 and 3 are different, check I/F P.C. board.

Check miscabling, misinstallation and connector connection.

YES

(Check with miscabling check function of outdoor unit.)

Open service valves fully.

Exchange low-pressure sensor.

Correct SV2 and SV4 circuits.

Correct cabling.

Cleaning

In cooling season, go to (A) In heating season, go to (B)

(A) Cooling

Does indoor fan normally

operate in cooling season?

YES

Is there clogging of indoor

air filter or heat exchanger?

Is indoor PMV normal?

Refrigerant shortage or

clogging or pipe deformed

(B) Heating

Is outdoor fan normally

operated in heating season?

Is there clogging of

outdoor heat exchanger?

Is outdoor PMV normal?

YES

Are following items concerned

to indoor fan motor normal?

1. Connector connection

2. Condenser

3. Motor

4. Fan

YES

Is connector connection

or coil normal?

YES

Is there clogging on whole valve?

Is indoor fan system normal?

• Fan crack

• Fan coming-off

YES

Repair faulty parts.

Check indoor P.C. board.

Failure → Replace

Repair faulty parts.

Replace PMV body.

Check outdoor

I/F P.C. board.

Failure → Replace

Repair faulty parts.

Refrigerant shortage,

clogging, pipe deformed

Check code

Check code name

Cause of operation

[H07] / [d7]

(Current code / AI-NET)

Are balance pipe valves

of all outdoor units in same line

fully opened?

YES

Are TK1, TK2, TK3, and

TK4 sensors of the error-detected

unit correctly connected?

Is there no sensor detached

or misinstallation?

YES

Are characteristics of TK1 to TK4

of error-detected unit normal?

YES

Oil level down

detection protection

∗ Characteristics-4

1. Valves of balance pipes closed.

2. Miscabling or misinstallation of TK1 to TK4 sensors

3. TK1 to TK4 sensor error

4. Gas leak or oil leak of all outdoor units

5. Refrigerant stagnation of compressor case

6. SV3A, 3B, 3D, 3C, 3E valve error

7. Clogging of oil return circuit from oil separator

8. Clogging of oil-equation circuit system

Open balance pipe valves fully,

reset power supply, and start operation.

Correct miswiring and misinstallation.

TK1: CN514 TK2: CN515 TK3: CN516

( )

TK4: CN523

Sensor error → Replace

Check gas leak of all outdoor units in the same line and check soaked oil.

No error

Check refrigerant stagnation

in compressor.

Refrigerant stagnation

Correct refrigerant stagnation in compressor, reset power supply, and start the operation.

Check oil level judgment of each unit.

Are all oil levels correct?

YES

Clear cause of stagnation. Check clogging of oil equalization circuit.

Indoor/outdoor PMV error (Cause of refrigerant stagnation), discharge check valve error, etc.

YES

(SV3A, SV3C) and clogging (SV3B, SV3E).

Check clogging of solenoid valves (SV3A, SV3C)

7-segment display with SW01/02/03=1/15/1

(Note) (∗1), (∗2), (∗3) and (∗4). See page 100, 101.

(∗1) Check leakage of valves

No leakage or clogging

(∗2) Check clogging of oil return circuit

from oil separator. (Capillary tube, strainer)

Check clogging of SV3D valve.

No choke

of all outdoor units in the same line. (∗3)

No choke

(∗4)

Specify gas leak position and repair it.

(Recharging, refill oil)

YES

Choke

Replace faulty part.

(Reference) When refrigerant stagnates in compressor shell, the oil level shortage may be judged.

In some cases, it may be difficult to check the leakage of clogging in the following condition of refrigerant stagnation in low ambient temperature condition.

In this case, take a longer operating time prior to check. (Criterion: Discharge temperature of TD1 and TD2 are 60°C or higher)

(*1)

a) Leakage check for SV3A valve (For multiple outdoor unit system)

• Turn off the power supply, take off connector of SV3A valve, and then start a test operation after power-ON.

• Check the temperature change at secondary side of SV3A valve during operation. ( → If temperature is raised, it is a leakage of SV3A valve. Replace SV3A valve.

in the figure.)



b) Leakage check for SV3C valve

• Turn off the power supply, take off connector of SV3C valve, and then start a test operation after power-ON.

• After operation for several minutes, check temperature at secondary side of SV3C valve.

in the figure.)

(



→ If temperature is high (equivalent to discharge temperature TD), it is a leakage of SV3C valve.

Replace SV3C valve. (Even if there is leakage from SV3C valve does not occur, temperature of SV3C valve at secondary side rises during operation. When the checked temperature is equivalent to TD temperature, it is a leakage of SV3C valve. Replace SV3C valve.)

c) Clogging check for SV3B valve (For multiple outdoor unit system)

• While outdoor unit is operated, set up SW01/02/03 = [2] [1] [3] to 7-segment display [Hr] [ 2], and push SW04 for 2 seconds or more.

• Set up SW02 = [9], and turn on SV3A, SV3B, SV3C valves. (7-segment display [Hr] [ 3–])

• While outdoor unit is operating, check temperature change at secondary side of SV3B valve.

in the figure.)

(



→ If temperature does not rise (equivalent to suction temperature), it is a clogging of SV3B valve.

Replace SV3B valve.

d) Clogging for SV3E valve

Reset the power supply.

Referring to “Valve forced open/close function” of the outdoor unit, check ON/OFF operation (Sound, coil surface temp up) of SV3E valve is performed.

Start test operation in COOL or HEAT mode.

After operation for several minutes, check the pipe temperature at the secondary side of SV3E valve whether temperature changes or not.

If it is equivalent to outside temperature, clogging of SV3E is considered. (

(Reference)

If SV3E valve is clogged, temperature of all TK1, TK2, TK3, and TK4 do not change.

(*2) Clogging check for SV3D valve of oil return circuit from oil separator

a) Oil return circuit

• While outdoor unit is operating, check temperature (secondary side of capillary) on oil return circuit.

in the figure.)

(



→ If temperature is low equivalent to suction temperature), a clogging of strainer of oil return circuit

or capillary is considered. Repair the clogged part.

b) Clogging check for SV3D valve

• While outdoor unit is operating, set up SW01/02/03 = [2] [1] [3] to 7-segment display [Hr] [ 2], and push SW04 for 2 seconds or more.

• Set up SW02 = [6], and turn on SV3D valve. (7-segment display [Hr] [ 3d])

• If temperature is low at secondary side of the valve or it does not change, clogging of valve, capillary, or strainer is considered. (

in the figure.)



in the figure.)



100

Toshiba MMK-AP0243H, MMK-AP0123H, MMK-AP0073H, MMK-AP0183H, MMK-AP0093H DATA BOOK

Specifications and Main Features

Frequently Asked Questions

User Manual