Toshiba MMU-AP0121MH, MMU-AP0071MH, MMU-AP0181MH, MMU-AP0091MH, MMU-AP0151MH User Manual

0 (0)

FILE NO. A06-002

SERVICE MANUAL

<Compact 4-Way Air Discharge Cassette Type>

MMU-AP0071MH

MMU-AP0091MH

MMU-AP0121MH

MMU-AP0151MH

MMU-AP0181MH

This Service Manual describes contents of the Compact 4-Way Air Discharge Cassette indoor unit. For the outdoor unit, refer to the Manual with FILE No. A03-009, A05-004, A05-015.

PRINTED IN JAPAN, Apr., 2006 ToMo

 

CONTENTS

 

SAFETY CAUTION ............................................................................................

3

1.

CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........................................

8

2.

WIRING DIAGRAM .....................................................................................

9

3.

PARTS RATING ........................................................................................

10

4.

REFRIGERATING CYCLE DIAGRAM ......................................................

34

5.

CONTROL OUTLINE ................................................................................

35

6.

APPLIED CONTROL ................................................................................

39

7.

TROUBLESHOOTING ..............................................................................

44

8.

CONFIGURATION OF CONTROL CIRCUIT ............................................

94

9.

DETACHMENTS .......................................................................................

99

10.

P.C. BOARD EXCHANGE PROCEDURES ............................................

108

11.

EXPLODED VIEWS AND PARTS LIST ..................................................

113

2

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.

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.

Prohibition of modification.

 

 

 

 

For spare parts, use those specified ( ).

 

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

Use specified parts.

: 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.

Do not bring a child

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.

close to 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

Insulating measures

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

No fire

monoxide poisoning may be caused.

 

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

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 port 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 Refrigerant 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.

3

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.

Assembly/Cabling

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 mugger) to

 

check the resistance is 2MW or more between the charge section and the non-charge

 

metal section (Earth position).

Insulator check

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

Ventilation

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.

Be attentive to

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

 

electric shock

 

 

 

 

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

Compulsion

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.

 

 

 

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.

 

 

Check after rerair

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.

Check after reinstallation

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 ( ) during repair work.

 

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

Put on gloves

( ) Heavy gloves such as work gloves

 

 

 

 

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

 

sufficiently cooled.

Cooling check

As temperature of the compressor pipes and others became high due to cooling/heating

operation, a burn may be caused.

 

 

4

• 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

<Piping>

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.)

<Flare nut>

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.

5

4. Tools

(1)Required Tools 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

 

 

 

 

R410A

Conventional air

 

 

 

air conditioner installation

conditioner installation

No.

Used tool

Usage

 

 

 

 

Existence of

 

Whether conven-

Whether new equipment

 

 

 

 

 

 

 

new equipment

 

tional equipment can

can be used with

 

 

 

for R410A

 

be used

conventional refrigerant

 

 

 

 

 

 

 

Q

Flare tool

Pipe flaring

Yes

 

*(Note 1)

Yes

 

 

 

 

 

 

 

 

Copper pipe gauge for

Flaring by conventional

 

 

 

 

R

adjusting projection

Yes

 

*(Note 1)

*(Note 1)

flare tool

 

 

margin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S

Torque wrench

Connection of flare nut

Yes

 

No

No

 

 

 

 

 

 

 

T

Gauge manifold

Evacuating, refrigerant

Yes

 

No

No

 

 

 

 

 

charge, run check, etc.

 

U

Charge hose

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V

Vacuum pump adapter

Vacuum evacuating

Yes

 

No

Yes

 

 

 

 

 

 

 

W

Electronic balance for

Refrigerant charge

Yes

 

Yes

Yes

refrigerant charging

 

 

 

 

 

 

 

 

X

Refrigerant cylinder

Refrigerant charge

Yes

 

No

No

 

 

 

 

 

 

 

Y

Leakage detector

Gas leakage check

Yes

 

No

Yes

 

 

 

 

 

 

 

Y

Charging cylinder

Refrigerant charge

(Note 2)

 

No

No

 

 

 

 

 

 

 

(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 serve also for R22 are necessary as the general tools.

(1)

Vacuum pump

(7)

Screwdriver (+, –)

 

Use vacuum pump by

(8)

Spanner or Monkey wrench

 

attaching vacuum pump adapter.

(9)

Hole core drill

(2)

Torque wrench

(10)

Hexagon wrench (Opposite side 4mm)

(3)

Pipe cutter

(11)

Tape measure

(4)

Reamer

(12)

Metal saw

 

 

(5)Pipe bender

(6)Level vial

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

(1)

Clamp meter

(3)

Insulation resistance tester

(2)

Thermometer

(4)

Electroscope

6

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.

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

Q Never charge the refrigerant over the specified amount.

RDo not charge the additional refrigerant.

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.

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-

 

High-

 

pressure gauge

pressure gauge

Connected to

Valve fully closed

 

 

indoor unit

VL

VH Gauge

(gas side)

Main

 

manifold

Center unit

 

 

 

pipe

 

 

 

 

 

Brazed

Service

 

Reducing

 

 

 

port Ø6.4

 

valve

Fully

Copper pipe

 

 

 

 

 

tightened

 

 

 

Service port

 

 

 

Valve fully closed

Ø6.4

 

Copper pipe

 

(liquid side)

 

 

Nitrogen Connected to other gas

terminal units

4mm-hexagonal wrench is required.

Q R

Set the equipment so that liquid refrigerant can be charged.

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

[ Cylinder with siphon ]

Gauge manifold

OUTDOOR unit

Refrigerant

cylinder

[ Cylinder without siphon ]

Gauge manifold

Siphon

 

OUTDOOR unit

cylinder Refrigerant

Electronic

Electronic

R410A refrigerant is consisted with HFC mixed refrigerant.

balance

balance

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

7

Toshiba MMU-AP0121MH, MMU-AP0071MH, MMU-AP0181MH, MMU-AP0091MH, MMU-AP0151MH User Manual

1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

1000 or more

1000 or more

595 to 660 Ceiling open dimension

15 or more

 

 

Obustacle

 

1000 or more

15 or more

Space required for installation and servicing

207

175

149

 

 

 

 

 

 

64

29

142

64

368.5

 

 

 

 

 

Knockout for fresh

 

air intake Ø100

 

145.5

Bottom face

700 Panel external dimension

93

595 to 660 Ceiling open dimension

of ceiling

 

 

 

525 Hanging bolt pitch

 

 

 

105

70

 

 

 

235

dimension

 

 

105

external

 

 

235

575 Unit

 

Ø162 (Pitch)

 

Electric parts box

320.5

For branch duct

 

knockout square hole Ø150

575 Unit external dimension

4-Ø3.2 hole (For 4mm tapping screw)

Bottom face of ceiling

 

 

 

 

200

 

 

 

 

Check port

 

 

dimension

 

(

 

450)

 

200

Check port

200

 

 

 

 

 

(o 450)

 

 

Check port

 

 

 

 

 

 

(

450)

 

Ceiling660open

 

Drain-up standing-up size

 

Indoor unit

 

lessor

up-Stand

lessor850

 

 

 

Standup-

627.5

 

 

 

 

 

 

Bottom face

 

 

 

 

to

 

of ceiling

 

 

 

 

 

Note)

 

 

 

 

 

 

595

 

 

 

 

 

 

As ABS is used for the drain discharge port of the main unit,

 

the vinyl chloride paste cannot be used.

 

Use the flexible hose (Band fix) included in the package.

 

 

 

 

 

4

2.7

 

 

Wired remote

 

 

 

120

 

 

controller

 

 

 

 

 

 

(RBC-AMT31E)

 

 

 

 

 

 

 

 

 

 

120

 

16

 

 

 

 

 

 

 

 

 

 

 

 

268

 

27

 

 

 

 

 

220.5

 

 

 

Drain discharge port

 

145.5

 

 

 

Hanging bolt

 

 

 

134

 

Bottom face

 

 

 

 

 

of ceiling

 

M10 or W3/8

 

 

 

63

 

 

local arrange

 

 

 

Ceiling panel

 

 

 

 

 

 

 

 

 

 

 

 

177

Hanging525bolt pitch Ceiling660to595open dimension externalPanel700dimension

Ø162

 

 

 

120

 

 

105214 256 14842

 

 

 

 

 

 

 

(Pitch)

 

 

 

 

 

 

 

 

 

 

 

 

 

142

 

 

 

 

 

 

 

21

158

 

 

 

 

 

 

 

4-Ø3.2 hole

 

 

 

 

 

 

 

(For 4mm

 

 

 

 

 

 

 

tapping screw)

 

 

 

97.5

 

 

 

Wiring connection

 

Refrigerant pipe

 

 

 

 

 

 

55

port

 

 

(Liquid) Ø6.4

 

 

 

 

 

 

 

 

 

For branch ductt

70

105

93

 

 

 

knockout square

 

139.5

 

 

 

hole Ø150

 

 

 

 

 

190.5

 

 

Refrigerant pipe (Gas)

 

 

 

 

 

 

 

 

0151, 0181MH

: Ø12.7

 

 

 

 

 

0071 to 0121MH : Ø9.5

 

 

 

 

 

8

2. WIRING DIAGRAM

PMV

 

6

4

3

1

2

5

 

 

TC1

 

 

FS

TA

 

TCJ

TC2

 

 

 

 

6

4

3

1

2

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN309

 

 

 

1

2

3

4

5

6

1

 

3

1

 

3

1

2

1

2

1

2

(YEL)

 

 

 

1

2

3

4

5

6

1

2

3

1

2

3

1

2

1

2

1

2

3

1

 

 

CN333

CN82 (BLU)

 

CN100

CN34

CN104 CN102 CN101

 

CN41

 

(WHI)

 

 

(BLU)

BLK

5

5

 

 

 

 

 

(BRW)

(RED)

(YEL) (RED)

(BLK)

 

3

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor

 

 

 

 

 

 

 

2

 

BLK

3

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

 

 

 

 

 

 

 

 

drive circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(BLU)

BLU

CN334

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLU

(WHI)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U1 U2 A B

4

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

2

CN71

1

(CHK)

 

 

WHI

BLK

1

1

2

 

 

CN68

 

1

 

 

 

1

2

(BLU)

CN72

(DISP)

 

 

2

 

 

1

2

1

1

U1

U2

 

 

 

CN001

DP

 

RY302

 

 

Outdoor

 

 

 

(WHI)

 

 

 

 

3

3

 

 

 

unit

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

Wireed

 

Adapter for

 

CN304

RY303

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN80

PNL

remote controller

wireless

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

remote controller

 

(GRY)

3

Fuse

 

 

 

 

 

 

 

 

 

Fuse

 

 

 

 

 

 

 

(GRN)

1

 

 

 

 

 

 

 

 

CN67

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T6.3A

 

 

 

 

 

 

 

 

 

T3.15A

 

 

 

 

 

 

 

CN73

2

 

 

 

 

 

 

 

RED (BLK)

250V ~

 

 

 

 

 

 

 

 

250V ~

 

 

 

 

 

 

EXCT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DC20V

(RED)

1

 

 

 

 

 

 

 

1

1

 

 

 

 

 

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

 

 

 

 

 

 

WHI

 

 

 

 

 

 

 

 

 

 

 

 

 

supply

 

DC15V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DC12V

CN70

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

circuit

 

 

 

 

 

 

 

 

 

3

3

P301

 

 

 

 

 

 

 

 

 

 

 

 

DC 7 V

(WHI)

1

Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BLK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

Indoor unit

Flow selector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN20

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

GRL

 

 

 

 

 

 

earth screw

unit earth screw

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(BLU)

2

 

 

 

 

 

 

 

 

 

 

1

CN66

 

 

 

Control P.C. board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(WHI)

 

 

 

 

for Indoor unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

1

1

1

1

 

 

R(L)

S(N)

 

1

CN44

 

 

 

 

MCC-1402

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

2

2

2

2

2

 

 

 

2

(BRW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN33

LM1

Power supply

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

3

3

3

3

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(WHI)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

4

4

4

4

4

 

 

single phase

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

220-240V, 50Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

5

5

5

5

5

 

 

 

2

CN50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

220V, 60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

(WHI)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN32

 

 

 

CN61

 

 

 

 

CN60

 

 

 

CN81

 

 

 

2

2

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

LM2

 

 

 

 

 

(WHI)

 

 

 

(YEL)

 

 

 

 

(WHI)

 

 

 

(BLK)

 

 

 

3

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

T10

1

2

3

4

5

6

1

2

3

4

5

6

1

2

3

4

5

 

 

4

4

 

 

 

 

 

 

 

 

 

 

5

5

 

 

 

 

 

 

 

 

(Fan drive)

 

 

 

 

 

 

 

 

Option

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symbol

Parts name

 

 

Color

 

FM

Fan motor

 

 

indication

 

 

 

 

TA

Indoor temp. sensor

 

RED : RED

TC1

Temp. sensor

 

WHI : WHITE

 

 

 

YEL : YELLOW

TCJ

Temp. sensor

 

BLU : BLUE

TC2

Temp. sensor

 

 

BLK : BLACK

LM1, LM2

Louver motor

 

GRY : GRAY

DP

Drain pump motor

 

PNK : PINK

FS

Float switch

 

ORN : ORANGE

 

 

 

BRW: BROWN

RY302

Drain control relay

 

GRN : GREEN

PMV

Pulse motor valve

 

 

 

 

 

1. indicates the terminal bolock letter.

Letter at inside indicates the terminal number.

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

3. indicates a control P.C. board.

9

3. PARTS RATING

3-1. Parts Rating

Model

MMU-

AP0071MH

 

AP0091MH

 

AP0121MH

AP0151MH

AP0181MH

 

 

 

 

 

 

 

 

Fan motor

 

 

 

SWF-230-60-1R

 

 

 

 

 

 

 

 

 

 

Motor for horizontal grille

 

 

 

MP24Z3N

 

 

 

 

 

 

 

 

 

 

Pulse motor

 

 

 

EDM-MD12TF-3

 

 

 

 

 

 

 

 

 

 

Pulse motor valve

 

 

 

EDM-B25YGTF-3

EDM-B40YGTF-3

 

 

 

 

 

 

 

 

TA sensor

 

 

 

Lead wire length : 155mm Vinyl tube

 

 

 

 

 

 

 

 

 

TC1 sensor

 

 

Ø 4 size lead wire length : 1400mm Vinyl tube

 

 

 

 

 

 

 

 

 

TC2 sensor

 

 

Ø 6 size lead wire length : 1500mm Vinyl tube (Black)

 

 

 

 

 

 

 

 

 

TCJ sensor

 

 

Ø 6 size lead wire length : 1400mm Vinyl tube (Red)

 

 

 

 

 

 

 

 

 

 

Float switch

 

 

 

 

 

FS-0218-103

 

 

 

 

 

 

 

 

 

 

 

Drain pump motor

 

 

 

 

 

ADP-1409

 

 

 

 

 

 

 

 

 

 

 

3-2. Name of Each Part

Earth screw

It is included in the electric parts box.

Air outlet/Air outlet flap

Select air blow direction in cooling or heating operation each.

Clip

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The clip is to open/close the air inlet grille.

 

 

Air filter

 

 

Air inlet grille

 

 

 

 

 

Removes dust and trash.

 

 

 

 

 

 

 

 

 

 

(Air filter is provided in the air grille.)

Air in the room is sucked from here.

10

3-3. Parts Name of Remote Controller

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 leak breaker at the first time, [SET DATA] flashes on the display part of the remote controller. While this display is flashing, the model is being automatically confirmed. Accordingly, wait for a while after [SET DATA] display has disappeared, and then use the remote controller.

 

 

CODE No.

SET DATA SETTING TEST

 

Display

 

UNIT No.

H

R.C. No.

section

TEMP.

 

ON / OFF

 

TIMER SET

FAN

MODE

Operation

 

 

 

TIME

SWING/FIX

VENT

section

FILTER

 

 

 

RESET TEST SET CL

UNIT

 

 

 

 

7 8

9

1

2

 

 

3

 

 

4

SET DATA SETTING TEST

 

 

UNIT No.

5

H

R.C. No.

 

6

 

 

 

 

 

 

15

 

 

1 SET DATA display

 

12

Displayed during setup of the timer.

 

2 Operation mode select display

 

 

The selected operation mode is displayed.

13

3 CHECK display

 

 

 

Displayed while the protective device works or a

 

trouble occurs.

 

 

 

4 Timer time display

 

14

17

CODE No.

10

11

16

12 1314

PRE-HEAT display

Displayed when the heating operation starts.

While this indication is displayed, the indoor fan stops.

Operation ready display

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

No function display

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

5 Timer SETIN setup display

When pushing the Timer SET 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 Flap position display

Displays flap position.

9 SWING display

Displayed during up/down movement of the flap.

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.

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

15 Air volume select display

The selected air volume mode is displayed.

(AUTO)

(HIGH)

(MED.)

(LOW)

16 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.

17 Central control display

Displayed when using the remote controller together with the central control remote controller, etc.

If Remote controller is prohibited at the centralcontrol side, flashes when operating

ON / OFF , MODE ,

/

buttons and

the change is not accepted.

(The contents available to be set up on the remote controller differ according to the central control mode. For details, refer to Owner’s Manual of the central control remote controller.)

11

Operation section

Push each button to select a desired operation.

This remote controller can operate the maximum 8 indoor units.

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

ON / OFF button only.

 

1

7

 

 

TEMP.

 

 

ON / OFF

8

10

 

 

 

TIMER SET

FAN

MODE

 

2

9

TIME

SWING/FIX

VENT

 

4

FILTER

 

 

 

RESET TEST

SET CL

UNIT

 

6

5

 

 

 

3

 

 

 

 

1 Air volume select button

Selects the desired air volume mode.

2 Timer set button

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

3 Check button

The CHECK button is used for the check operation. During normal operation, do not use this button.

4 Fan button

FAN button is used when a fan which is sold on the market or etc. is connected.

5

Filter reset button

 

 

Resets (Erases) “FILTER

” display.

6

Wind direction and Swing

 

 

UNIT :

 

If the multiple indoor units are operated by only one remote controller, select the units when the air direction is adjusted.

SWING/FIX :

Set up the auto swing and angle of the flap.

7 Operation lamp

Lamp is lit during the operation. Lamp is off when stopped.

Although it flashes when operating the protection device or abnormal time.

8

ON / OFF

button

 

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.

9 Operation select button

Selects desired operation mode.

10 Set up temperature button

Adjusts the room temperature.

Set the desired set temperature by pushing or .

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.

12

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

ON / OFF button only.

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

ON / OFF

button without turning off the main power

switch and the leak breaker.

 

 

 

 

TEMP.

 

ON / OFF

 

1

4

 

 

3

 

 

2

TIMER SET

FAN

MODE

TIME

SWING/FIX

VENT

 

 

FILTER

 

 

 

 

RESET TEST SET CL

UNIT

 

 

 

1

2

ON / OFF

Push button.

The operation lamp goes on, and the operation starts.

Select an operation mode with the “MODE MODE ” button.

Cooling only model

DRY

COOL

FAN

One push of the button, and the display changes in the order shown on the right.

In HEAT mode, if the room temperature reaches to the set temperature, the outdoor unit stops and the air flow becomes ULTRA LOW and the air volume decreases.

Heat-pump model

AUTO HEAT DRY COOL FAN (Dehumidity)

• In the heating mode, the fan stops so that cool air is not discharged and Heat is displayed.

3 Select air volume with “FAN FAN ” button.

 

 

 

 

 

 

 

 

 

 

 

AUTO

 

 

HIGH

 

 

MED.

 

 

LOW

 

One push of the button, and the display

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

changes in the order shown on the right.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When air volume is “AUTO ”, air volume differs according to the temperature difference between set temp. and room temp.

In DRY mode, “AUTO ” is displayed 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.

4 Determine the set up temperature by pushing the “TEMP. ” or “TEMP. ” button.

Stop

Push ON / OFF button.

The operation lamp goes off, and the operation stops.

13

3-5. 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.

TEMP.

 

ON / OFF

3

 

 

TIMER SET

FAN

MODE

TIME

SWING/FIX

VENT

FILTER

 

 

RESET TEST SET CL

UNIT

 

Start

1

ON / OFF

button

 

Push this button to start the air conditioner.

2 Mode select button (MODE)

Select Auto.

3 Temperature button

Set the desired temperature.

1

2

In case of cooling, start the operation after approx. 1 minute.

In case of heating, the operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes.

When you select the Auto mode, it is unnecessary to set the fan speed.

The FAN speed display will show AUTO and the fan speed will be automatically controlled.

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

When the room temperature reaches the set temperature and the outdoor unit stops, 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 and “HEAT READY” is displayed.

If the Auto mode is uncomfortable, you can select the desired conditions manually.

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.

Stop

Push ON / OFF button.

Push this button again to stop the air conditioner.

14

3-6. TIMER Operation

A type of timer operation can be selected from the following three types.

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.

Timer operation

 

TEMP.

 

ON / OFF

1

TIMER SET

FAN

MODE

TIME

SWING/FIX

VENT

 

 

FILTER

 

2

 

RESET TEST SET CL

UNIT

 

3 4

1 Push TIMER SET button.

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

SET DATA and timer time displays flash.

2 Push

TIME

to select “SET TIME”.

 

 

OFF

 

 

 

 

OFF

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(OFF timer)

(Repeat OFF timer)

(ON timer)

 

 

 

 

No display

 

 

 

 

 

 

 

 

 

 

 

 

For every push of button, the set time increases in the unit of 0.5 hr (30 minutes). The maximum set time is 72.0 hr.

For every push of button, the set time decreases in the unit of 0.5 hr (30 minutes). The minimum set time is 0.5 hr.

3 Push SET button.

SETTING display disappears and timer time display goes on.

(When ON timer is activated, timer time, ON timer are displayed and other displays disappear.)

Cancel of timer operation

4 Push CL button.

• TIMER display disappears.

NOTICE

• When the operation stops after the timer reached the preset time, the Repeat OFF timer resumes the operation by pushing ON / OFF button and stops the operation after the time of the timer has reached the set time.

15

3-7. Adjustment of Wind Direction

While the air conditioner stops, the horizontal flap (Up/Down air direction adjustment plate) automatically directs upward.

While the air conditioner is in ready status for heating, the horizontal flap (Up/Down air direction

adjustment plate) directs 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.

How to set up the air direction

Push

SWING/FIX

1 Every pushing the button, the air direction changes.

button during operation.

In Heating operation

 

In Cooling / Dry operation

 

Set the horizontal flap (Up/Down

 

Set the horizontal flap (Up/Down

 

air direction adjustment plate)

 

air direction adjustment plate)

 

downward. If directing it upward,

 

upward. If directing it downward,

 

the hot air may not come to the

Initial setup

the dew may fall on near the air

Initial setup

foot come to the foot.

air outlet port or it drips.

 

 

How to start swinging

2 Push SWING/FIX button.

Set direction of the horizontal flap (Up/Down air

direction adjustment plate) to the lowest position and then push SWING/FIX button again.

[SWING ] is displayed and the air direction automatically changes upward/downward.

In case when one remote controller controls the multiple indoor units, each indoor unit can be selected and its air direction can be set up.

How to stop swinging

3 Push SWING/FIX button again during swinging of the horizontal flap.

The horizontal flap can be stopped at the desired position. After then the air direction can be again set up from the uppermost position by pushing SWING/FIX button.

*While the horizontal flap is set downward in cooling/drying operation, it does not stop.

If stopping the horizontal flap which directs downward during swinging, it stops after moving to the

3rd position from the top position.

4 UNIT

UNIT

To set up the air direction individually, push button to display each indoor unit No. in a group control. Then set up the air direction to a displayed indoor unit.

If there is no display, all the indoor units can be operated collectively.

• Every pushing UNIT button, the display exchanges as shown in the figure.

No display Unit No. 1-1 Unit No. 1-2

Unit No. 1-4 Unit No. 1-3

TEMP.

 

ON / OFF

TIMER SET

FAN

MODE

TIME

SWING/FIX

VENT

FILTER

 

 

RESET TEST SET CL

UNIT

 

1, 2, 3

4

In FAN operation

In all modes

Series of operation

Initial setup

Display when stopping the swing

Fan/Heat

Cool/Dry

operation

operation

16

3-8. Information

Confirmation before operation

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

Make sure whether earth wire is connected.

Make sure the air filter is connected to the indoor unit.

Heating capacity

A heat pump system which absorbs heat from outside of the room and then discharges heat into the room is adopted for heating. If the outside temperature falls, the heating capacity decreases.

When the outside temperature is too low, it is recommended to use this air conditioner together with other heating equipment.

Defrost during heating operation

In heating operation, if there is frost on the outdoor unit, the operation changes automatically to the defrost operation (Approx. 2 to 10 minutes) to increase the heating efficiency.

During defrost operation, the fan of the indoor unit stops.

3-minutes protection

When restarting the operation just after the operation has been stopped or the main power switch has turned on, the outdoor unit does not work for approx. 3 minutes in order to protect the air conditioner.

Power failure

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

When the power is returned after a power failure, the operation lamp notifies the power-ON by flashing operation lamp on the remote controller.

ON / OFF

• When restarting the operation, push button again.

Fan rotation in stopped unit

In heating operation even in the stopped indoor unit, the fan rotates once for several minutes per approx. an hour when the other indoor unit is operating to protect the air conditioner.

Protective device (High pressure switch)

This device stops automatically an operation when excessive force is applied on the air conditioner.

If the protective device works, the operation stops and the operation lamp flashes.

When the protective device works, the indication TEST and the check code are displayed on the display section of the remote controller. In the following cases, the protective device may work.

In cooling operation

The suction port or discharge port of the outdoor unit is closed.

A strong wind continuously blows to the discharge port of the outdoor unit.

In heating operation

Dust or waste adheres excessively to air filter of the indoor unit.

The discharge port of the indoor unit is closed.

If the protective device works, turn off the main power switch, solve the cause, and then start the operation again.

Cooling/Heating operation of Super Modular Multi system air conditioner

Although each indoor unit can be individually controlled in the Super Modular Multi system air conditioner, the cooling operation and the heating operation cannot be simultaneously performed in the multiple indoor units which are connected to an outdoor unit.

If the cooling operation and the heating operation are simultaneously performed, the indoor unit

which executes cooling operation stops, and on the operation section lights up. On the other hand, the indoor unit which executes heating operation continues running. In a case that the manager of the air conditioner has fixed the operation to cooling or heating, an operation other than that set up is unavailable. If an operation other than that

set up is executed, on the operation section lights up and the operation stops.

Characteristics of heating operation

The wind is not out just after starting an operation. The hot wind starts to blow 3 to 5 minutes after (Time differs according to indoor/outdoor temperature.) the indoor heat exchanger has warmed up.

During operation, the outdoor unit may stop if the outside temperature rises.

17

3-9. Air Conditioner Operations and Performance

3 minutes protection function

3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main power switch/circuit breaker is turned on for re-starting the air conditioner.

Power failure

Power failure during operation will stop the unit completely.

To restart the operation, push the START/STOP button on the remote controller.

Lightning or a wireless car telephone operating nearby may cause the unit to malfunction. Turn off the main power switch or circuit breaker and then turn them on again. Push the START/STOP button on the remote controller to restart.

Heating characteristics

Preheating operation

The air conditioner will not deliver warm air immediately after it is turned on. Warm air will start to flow out after approximately 5 minutes when the indoor heat exchanger warmed up.

Warm air control (In heating operation)

When the room temperature reaches the set temperature, the fan speed is automatically reduced to prevent to blow cold draft. At this time, the outdoor unit will stop.

Defrosting operation

If the outdoor unit is frosted during the heating operation, defrosting starts automatically (for approximately 2 to 10 minutes) to maintain the heating capacity.

The fans in both indoor and outdoor units will stop during the defrosting operation.

During the defrosting operation, the defrosted water will be drained from the bottom plate of the outdoor unit.

Heating capacity

In the heating operation, the heat is absorbed from the outside and brought into the room. This way of heating is called heat pump system. When the outside temperature is too low, it is recommended to use another heating apparatus in combination with the air conditioner.

Attention to snowfall and freeze on the outdoor unit

In snowy areas, the air inlet and air outlet of the outdoor unit are often covered with snow or frozen up. If snow or freeze on the outdoor unit is left as it is, it may cause machine failure or poor warming.

In cold areas, pay attention to the drain hose so that it perfectly drains water without water remaining inside for freeze prevention. If water freezes in the drain hose or inside the outdoor unit, it may cause machine failure or poor warming.

Air conditioner operating conditions

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

Cooling operation

Outdoor temperature

: –5°C to 43°C

 

 

 

 

Room temperature

: 21°C to 32°C (Dry valve temp.), 15°C to 24°C (Wet valve 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.

 

 

 

 

Dry operation

Outdoor temperature : 15°C to 43°C (Maximum suction air temp. 46°C)

 

 

 

 

Room temperature

: 17°C to 32°C

 

 

 

Heating operation

Outdoor temperature

: –15°C to 15°C (Wet valve temp.)

 

 

 

 

Room temperature

: 15°C to 28°C (Dry valve temp.)

 

 

 

 

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

18

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 water is out.

Sometimes, noise “Pushu !” is heard.

 

Indoor unit

• “Swish” sound is

 

 

heard sometimes.

 

 

• Slight “Pishi!” sound

 

 

is heard.

 

again.

 

• Discharge air smells.

 

• The operation lamp

 

 

Check

 

flashes

 

 

• “STANDBY

 

 

 

 

indication is lit.

 

 

 

• Sound or cool air is

 

 

output from the

 

 

stand by indoor unit.

 

 

• When power of the

 

 

air conditioner is

 

 

turned on, “Ticktock”

 

 

sound is heard.

 

Operates or stops automatically.

 

 

Does not operate.

 

failure.a

Silent

 

 

 

It is not

Air is not cooled

or warmed sufficiently.

 

It’s strange.

 

 

 

 

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, during 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.

Flashes when power is turned on again after power failure, or when power switch is turned on.

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 contrary 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.

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? (“STANDBY ” indication is lit on the display column of the remote controller.)

Is the suction port or discharge port of the outdoor unit obstructed?

Are any door or window open?

Is the air filter clogged with dust?

Is discharge flap 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? (“STANDBY ” indication is lit on the display column of the remote controller.)

When the following symptoms are found, stop the operation immediately, turn off the power switch, and contact the dealer which you have purchased the air conditioner.

Activation of switch is unstable.

Fuse or breaker is blown periodically.

Foreign matters or water entered by mistake.

When if activation cause of the protective device has been removed, the operation is not performed.

Other unusual status occurred.

19

Accessory parts and Parts to be procured locally

H Accessory parts

 

Part name

Q’ty

Shape

Usage

 

 

 

 

 

 

Installation Manual

1

This manual

(Ensure hand over to customer)

 

 

 

 

 

 

Heat insulating pipe

2

 

For heat insulation of the pipe connecting section

 

 

 

 

 

 

Installation pattern

1

——

For checking of ceiling opening and the main unit position

 

 

 

 

 

 

Installation gauge

2

 

For positioning of the ceiling position

 

 

(To be used with the installation pattern)

 

 

 

 

 

 

 

 

 

 

Pattern fixing screw

4

M5 × 16L

For attach the installation pattern

 

 

 

 

 

 

Heat insulator

1

 

For heat insulation of drain connecting section

 

 

 

 

 

 

Washer

8

 

For hanging unit

 

 

 

 

 

 

Hose band

1

 

For connecting drain pipe

 

 

 

 

 

 

Flexible hose

1

 

For adjusting core-out of drain pipe

 

 

 

 

 

20

Heat insulator A

1

 

For sealing of wire connecting port

 

 

 

 

Heat insulator B

1

 

For sealing of wire connecting port

 

 

 

 

 

 

 

Refrigerant piping

Piping material used for the conventional refrigerant cannot be used.

Use copper pipe only with a wall thickness of 0.8 mm or more for Ø6.4, Ø9.5, Ø12.7.

Flare nut and flare operations are also different from those of the conventional refrigerant. Use the flare nut fitted to the indoor unit of the air conditioner.

1 PRECAUTIONS FOR SAFETY

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

Important safety information are described in this installation manual. Please ensure this manual is read thoroughly and kept for future reference.

After the installation work, perform a trial operation 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 any unit maintenance.

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

CAUTION New Refrigerant Air Conditioner Installation

THIS AIR CONDITIONER FEATURES A NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DEPLETE OZONE LAYER.

The pressure of R410A is 1.6 times higher than that of former refrigerant R22. The refrigerating oil has also been changed. Therefore be sure that any former refrigerant, refrigerant oil or any other contaminants do not enter the refrigerating cycle of the air conditioner, during either installation or service work. If incorrect tools or operating procedures are used, there is a possibility of a serious accident. Use only tools and materials that have been designed to operate with R410A.

To prevent the risk of charging with an incorrect refrigerant, the dimensions of the charging port connections are different to those used for conventional refrigerant. Therefore only tools designed to operate with R410A can be used.

For connecting pipes, use piping specifically designed for R410A.

During installation, ensure pipes are clean and ensure contaminants do not enter in the pipes as the system is affected by impurities such as water, oxide scales, dirt, oil, etc. Do not use existing pipe work from previous installation as this will cause problems due to pressure resistances and impurities within the pipe.

CAUTION 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.

WARNING

Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner.

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

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 an electric shock.

Connect all of the installation wiring correctly.

If the installation wiring is incorrect electrical parts may be damaged.

During the transportation and installation of the air conditioning unit, ensure that gaseous matter other than the specified refrigerant does not enter into the refrigeration cycle.

If a refrigerant becomes contaminated with foreign gases, the gas pressure within the refrigerant cycle will become abnormally high and may result in the fracture of pipe work and possible human injury.

Do not modify this unit by removing any of the safety guards or by overriding any of the safety interlock switches.

Exposure of the unit to water or other forms of moisture before installation may cause a short-circuit of the electrical parts.

Do not store it in a wet basement or expose to rain or water.

After unpacking the unit, examine for possible damage.

Do not install in a place that might increase the vibration of the unit.

To avoid personal injury (with sharp edges), be careful when handling parts.

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 in the event of a refrigerant leak the rooms does not exceed the critical level.

21

1 PRECAUTIONS FOR SAFETY

Install the air conditioner securely in a location where the base can sustain the weight of the unit 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 unit falling.

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

If the leaked refrigerant gas comes in contact with fire, noxious gases may be generated.

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 gases may be generated.

Electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Ensure the power supply to the air conditioner is exclusive to that unit only.

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

Use only the specified wiring during the unit installation. Ensure that all terminals are securely fixed, so preventing any external forces having a negative effect on the terminals.

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

Inappropriate grounding may cause an electric shock.

Do not install the air conditioner in a location that may be subjected to a risk of exposure to a combustible gas.

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

2 SELECTION OF INSTALLATION PLACE

WARNING

The air conditioner must be installed in a location that can support the weight of the unit effectively.

If the unit is not installed on a foundation that can support its weight effectively, the unit may fall down, resulting in possible human injury.

Where required ensure that the units installation is sufficient enough to withstand against an earthquake.

An insufficient installation could result in the unit falling, causing possible human injury.

Install the air conditioner at a minimum height of 2.5 m from the floor.

Do not insert your hands or others into the unit while the air conditioner is operating.

CAUTION

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

A place where the unit can be installed horizontally.

A place where a sufficient servicing space can be maintained for safety maintenance and unit check.

A place where the drain water can be exited from the unit, without causing a problem.

Avoid installing in the following places.

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

Places exposed to oil, vapor, oil smoke or corrosive gas.

Places where organic solvent is used nearby.

Places close to a machine generating high frequency.

Places where the discharged air blows directly into the window of the neighbouring house. (For outdoor unit)

Places where the noise from the outdoor unit can be easily transmitted to the neighboring property.

(When installing the air conditioner on the boundary with a neighbor, pay due attention to the level of noise.)

Places with poor ventilation.

Installation space

Ensure there is sufficient space to install the unit and to perform maintenance work as and when required.

Keep 15mm or more for clearance between top plate of the indoor unit and the ceiling surface.

Installation space

or more

1000 or more

 

 

 

or more

1000 or more

15

 

 

 

15

 

 

 

 

 

 

 

283

or more

283

or more

1000

or more

 

 

 

 

 

 

Obstacle

 

Ceiling height

Model MMU-AP

Installable ceiling height

 

 

0071 to 0121 type

Up to 2.7 m

 

 

0151 to 0181 type

Up to 3.5 m

 

 

When the ceiling height exceeds the standard distance of a 4-way air discharge cassette as detailed in the following table. The air-flow may not be sufficient to heat the room. It is therefore necessary to set the unit to high ceiling mode or adjust the direction of the ceiling discharge.

For setup of the high ceiling mode, refer to the details of Applicable controls “To incorporate a filter sold separately” and “In case of installation to high ceiling” within this Manual.

Installable ceiling height list

Indoor unit capacity type

0071 to 0121 type

 

0151 type

 

 

0181 type

 

Setup of high ceiling

 

 

 

 

 

 

 

 

 

 

 

 

Discharge direction

4-way

3-way

2-way

4-way

3-way

 

2-way

4-way

3-way

 

2-way

Setup data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standard (At shipment)

2.7

2.9

 

 

3.2

 

 

0000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High ceiling (2)

3.2

 

 

3.4

 

 

0002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High ceiling (3)

3.5

 

 

3.5

 

 

0003

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Unit: m)

REQUIREMENT

When high ceiling (1) or (3) is used with 4-way blowing, a draft is easily recognized due to drop of discharge temperature.

The air filter cleaning signal duration (Notification of filter cleaning) on the remote controller can be changed according to the condition of installation.

If the room is not heated due to the installation place or construction of the room, the detection temperature of heating can be raised.

For setup method, refer to “Change of lighting term of filter sign” and “Increased heating effect” in the Applicable controls of this Manual.

2 SELECTION OF INSTALLATION PLACE

In case of wireless type

The wireless remote controller can be operated up to a maximum of 8 m from the infra-red receiver.

Therefore ensure that the remote controller will be mounted and used within this stated parameter.

To prevent malfunction do not mount or operate in a

8

m

 

 

location that is subjected to either a fluorescent lamp

or

 

 

 

or direct sunlight.

 

 

less

 

 

 

 

A maximum of 6 indoor units with wireless remote

 

 

 

 

controller can be installed within the same room.

 

 

 

3 INSTALLATION OF INDOOR UNIT

22

WARNING

The installation of the air conditioning unit must be positioned in a location that can sufficiently support its weight

 

and give protection against adverse environmental conditions.

Failure to do so may result in unit damage and possible human injury.

Any incomplete installation may also cause possible risk of human injury.

Unpack the package, take out the product and then place it on the floor so that the same surface directs underneath as it is placed in the package.

Never put the products taken out from the packing box in a

pile, or put other load on them; otherwise there is a

OK

NO GOOD

possibility to damage electric parts, fan parts, draining

 

 

mechanism, and etc.

 

 

If the both sides are turned over, a deformation of mounting metal of the ceiling panel which is sold separately, etc may be caused. Accordingly the product may be damaged and the installation becomes impossible in some cases.

REQUIREMENT

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

Do not place heavy objects on the indoor unit. (Even when units are still packaged)

Always carry the unit as packaged from the factory wherever possible.

If carrying in the indoor unit unpacked by necessity, be sure to use buffering cloth, etc. to prevent damaging the unit.

To move the indoor unit, hold the hanging brackets (4 positions) only.

Do not apply force to other parts (refrigerant pipe, drain pan, foamed parts, or resin parts etc.).

• To be carried by two or more persons. Do not strap the unit in positions other than that stated.

Dimensional view

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

200

 

 

or1000more

1000 or more

595 to 660 Ceiling open dimension

 

200

 

 

 

 

 

200

moreor15

dimension

 

Check port

 

 

 

 

 

 

(

 

450)

 

 

 

 

 

Check port

 

 

 

 

 

 

 

 

 

 

(o 450)

 

 

 

Check port

 

 

 

 

 

 

 

 

 

(

450)

 

 

Obstacle

Ceiling660to open

 

Drain-up standing-up size

 

 

moreor15

 

 

 

 

300 or less

up-Stand

627.5

or less

Stand-up

or850less

 

 

1000 or more

 

Indoor unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ceiling

 

 

 

 

 

 

595

Note)

 

 

 

 

 

 

 

 

 

As ABS is used for the drain discharge port of the main unit,

 

 

 

the vinyl chloride paste cannot be used.

 

Space required for

Use the flexible hose (Band fix) included in the package.

installation and servicing

4

2.7

 

207

175

149

 

 

 

 

 

 

64

29

142

64

368.5

 

Knockout for 100 diameter

 

fresh air intake

 

145.5

Bottom face

700 Panel external dimension

93

595 to 660 Ceiling open dimension

of ceiling

 

 

 

525 Hanging bolt pitch

 

 

 

105

70

 

 

 

235

dimension

 

 

105

external

 

 

235

575 Unit

 

Ø162

 

 

4 screw holes

Electric parts box

320.5

 

 

(For 4 mm tapping screw)

 

For 150 diameter

575 Unit external dimension

 

 

branch duct knockout

 

 

square hole

 

 

Bottom face of ceiling

 

 

• Wired remote

 

120

controller

 

(RBC-AMT31E)

 

 

 

120

16

 

 

 

268

27

 

220.5

 

Drain discharge port

145.5

 

Hanging bolt

134

Bottom face

of ceiling

M10 or W3/8

63

local arrange

Ceiling panel

 

 

 

 

595to 660 Ceilingdimensionopen 700 Panel externaldimension

Ø162

 

 

 

21 120

 

177 525 Hanging boltpitch

214 105 256 42 148

 

 

 

158 142

 

 

97.5

 

 

 

Wiring connection

 

Refrigerant pipe

 

 

 

 

 

 

55

port

 

 

(Liquid) Ø6.4

 

 

 

 

 

 

 

 

 

For 150 diameter

70

105

93

 

 

 

branch duct

 

 

139.5

 

 

 

knockout square hole

 

 

 

 

190.5

 

 

Refrigerant pipe (Gas)

 

 

 

 

 

 

 

 

0151, 0181MH

: Ø12.7

 

 

 

 

 

0071 to 0121MH : Ø9.5

 

 

 

 

 

23

3 INSTALLATION OF INDOOR UNIT

Ceiling opening and installation of hanging bolts

Evaluate and determine the piping and wiring requirements inside the ceiling prior to the hanging of the unit.

After installation place of the indoor unit has been determined, create opening in ceiling and install the hanging bolts.

For the ceiling opening size and pitch for hanging bolts refer to the dimensional drawing and the supplied installation pattern.

Once the ceiling void has been created, ensure that the drain pipe, refrigerant pipes, inter-connecting wires and all control wires are in place prior to installing the actual indoor unit.

Please procure the hanging bolts and nuts for installation of the indoor unit at local site.

Hanging bolt

M10 or W3/8

4 pieces

 

 

 

Nut

M10 or W3/8

12 pieces

 

 

 

How to use the supplied installation pattern

The installation pattern is enclosed within the packaging of the air conditioner.

Existing ceiling void

Indoor unit

 

Use the pattern to determine the position and size of the opening and location of the hanging bolts.

New ceiling void

Use the pattern to determine the position of the new ceiling opening.

Cut off slit section of the main unit of the installation pattern. Cut off the outside of the pattern according to size of the ceiling opening. (There is a slit on the standard opening size section.)

Install the indoor unit after installation of the hanging bolts.

Using the supplied pattern attach it to the indoor unit using the supplied fixing screws (M5 × 16L 4off). (Screw pattern to the ceiling panel hanging brackets of the indoor unit)

When creating the opening ensure it is as per the outer dimensions of the supplied pattern.

Installation pattern Cut off the installation (Attached) pattern along slit of

the main unit.

M5 × 16L screws (Attached)

These screws are exclusive to the installation pattern. When installing the ceiling panel, the other exclusive screws attached to the ceiling panel (sold separately) are used.)

Treatment of ceiling

The ceiling differs according to the structure of the building. For details, consult your architect.

In the process after the ceiling panels have been removed, it is important to reinforce the ceiling construction and ensure the ceiling remains in a horizontal position. This is to prevent possible vibration of the ceiling panels.

1.Cut and remove the ceiling material.

2.Reinforce the cut surface of the ceiling construction and add support for fixing the end of ceiling panel.

Installation of hanging bolt

Use M10 hanging bolts (4 off, locally procured).

When mounting the unit, set the pitch of the hanging bolts according to the size of the unit as detailed on the dimensional drawing.

 

New concrete slab

Steel flame structure

Existing concrete slab

Install the bolts with insert brackets or anchor

Use existing angles or install new

Use a hole-in anchors, hole-in

bolts.

 

 

support angles.

 

plugs, or a hole-in bolts.

 

 

 

Hanging bolt

 

 

 

Reinforcing

 

 

 

 

 

steel

 

 

 

 

 

Anchor bolt

 

 

 

(Blade type

(Slide type

(Pipe hanging

 

 

 

bracket)

bracket)

anchor bolt)

Hanging bolt

Support angle

 

Installation of indoor unit

Attach the nut (M10 or W3/8: Procured locally) and washer (Ø34 mm) to the hanging bolt.

Put washers at either side of the T-groove on the hanging bracket of the indoor unit in order to hang the unit.

Using a spirit level, check that all four sides are horizontal. (Horizontal positioned within 5 mm)

Cut off the installation gauge from the installation pattern.

Using the installation gauge check and adjust clearance between the indoor unit and the ceiling opening (1) (10 to 42 mm on each side). Ensure that the unit is level to the ceiling and within a distance of (2) 23 mm to 28 mm below.

The installation gauge has details of how to use printed on it.

Note) Install the indoor unit so that the end part of opening does not come into contact with the drain socket piping.

Hanging bolt

(1)

M10 flat washer

(W3/8 or M10)

(Accessory)

Nut

(2)

(W3/8 or M10)

 

M10 flat washer

Nut

(Accessory)

(W3/8 or M10)

 

(1)M10 washer supplied, all other material must be procured locally.

(2)To ensure that the unit is mounted safely, the hanging bolt must be positioned just below the hanging bracket as shown in the diagram.

Level vial (Horizontal: within 5 mm)

Indoor unit

Indoor unit

Hanging bolt

 

Hanging

23 to 28 mm (1)

metal

 

1) 23 to 28 mm

 

 

10 to 42 mm (2)

 

Ceiling panel

 

Installation gauge 2) 10 to 42 mm

Installation gauge

Ceiling board

 

REQUIREMENT

Before installation of the indoor unit be sure to remove the transportation cushion found between the fan and the bell mouth.

Running the unit without removing the cushion may damage the fan motor.

Be sure to remove the cushion for transportation between the fan and the bell mouth.

Installation of ceiling panel (Sold separately)

Install the ceiling panel after completion of the installation of the indoor unit, including all piping and wiring.

Install the ceiling panel as per the supplied Installation Manual.

Check the installation dimensions of the indoor unit and the ceiling opening are correct and then install.

REQUIREMENT

Ensure the ceiling panel is mated to the ceiling surface or the indoor unit.

If the panel and unit are not mated together this may result in the formation of dew condensation causing a possible water leak.

First remove the 4 corner caps from the ceiling panel and fit to the indoor unit.

Installation of remote controller (Sold separately)

For installation of the wired remote controller, follow the Installation Manual supplied with the remote controller.

Do not expose remote controller to direct sunlight or excessive heat.

When using a wireless type remote controller check receiver on the indoor unit receives a signal.

For a wireless type controller ensure that it is used and mounted a minimum distance of 1m apart from any other electrical devices (TV, Stereo, etc). As this may cause interference with the devices.

24

4 DRAIN PIPING WORK

CAUTION

Install the drain piping so that the water drains effectively.

Apply heat insulation to prevent dew condensation from forming.

Incorrectly installed pipe work may result in a water leak.

Pipe material/Insulator and size

The following materials for piping work and insulation are to be procured locally.

Hard vinyl chloride pipe socket for VP25

Pipe material Hard vinyl chloride pipe VP25 (Outer diameter Ø32 mm)

Insulator

Foamed polyethylene foam, thickness: 10 mm or more

REQUIREMENT

• Ensure insulating of the drain pipes and connecting parts on the indoor units.

• The drain pipe should have a downward slope of at least 1/100 and ensure there are no swells or blockages as this will cause abnormal sounds.

• The maximum traverse length of drain pipe is 20 m. Provide support brackets at intervals of 1.5 to 2 m where necessary to prevent movement.

• Install the combined piping as shown in the illustration.

• Do not create an air purge in the pipework,

as the water would leak from this point.

As long as possible (10cm)

1.5m to 2m

Support

 

bracket

1/100 or more Heat downward insulator

Arched

shape NO

GOOD

Trap

VP25

VP25

VP25

(Collective pipes)

The hard vinyl-chloride pipe cannot be connected

directly to the drain pipe connecting port of the indoor unit. For connection with the drain pipe connecting port, ensure that the supplied flexible hose is fitted.

Adhesive agent cannot be used for the pipe connecting port (hard socket) on the indoor unit.

Be sure to use the supplied hose band for fixing, otherwise there is a risk of damage or water leakage from the drain pipe connecting port.

Connection of flexible hose

Insert the soft socket of the supplied flexible hose into the connecting port of the drain pipe.

Align the supplied hose band to the pipe connecting port end, and tighten.

REQUIREMENT

Fix the soft socket with the supplied hose band, tighten at the upper position of the unit.

The supplied flexible hose can bend up to a maximum of 45°

VP30 or more

Downward slope

 

1/100 or more

 

Drain pipe connecting port

VP25 vinyl chloride pipe

(Hard socket)

 

(Procured locally)

Attached hose band

Attached flexible hose

Soft socket

Hard socket

Socket for VP25

 

 

 

(Procured locally)

Adhesive agent prohibited

 

 

NO GOOD

max 45˚

Riser (Trap)

OK

max

90˚ Bend

45˚

 

Drain pipe connecting port (Transparent)

Indoor unit body

Align the attached hose band to the end of hose, set the tightening position upward, and then tighten it.

Flexible hose

VP25 vinyl chloride pipe

(Accessory)

(To be local procure)

 

 

 

 

 

 

Socket for VP25 vinyl chloride pipe (To be local procure)

Connection of drain pipe

Connect the hard socket (Procured locally) to the hard socket side of the supplied flexible hose which has been installed.

Connect the drain pipes (Procured locally) in turn to the connected hard sockets.

REQUIREMENT

Using an adhesive agent for vinyl chloride, connect the hard vinyl chloride pipes so that water does not leak.

Allow sufficient time for the adhesive to set and harden. (Refer to the instructions of the adhesive.)

Drain up

When it is not possible to achieve a natural downward slope on the drain pipe, you can create a vertical lift (Drain up) on the pipe.

Set the height of the drain pipe within 850 mm from the bottom surface of the ceiling.

The drain pipe should be piped from the drain pipe connecting port horizontally for a maximum of 300 mm and then piped vertically.

After piping the vertical lift, ensure the pipe work is set to a downward gradient.

Rising up 627.5mm or less

850mm or less

 

up

300mm

Rising

or less

 

Indoor unit

Underneath of ceiling

Check the draining

After completion of drain piping,

Check water drains away and that no water leaks from any of the connecting parts. At the same time check for any abnormal sounds from the drain pump.

Ensure drainage is checked during cooling mode.

When the electric work has finished:

Before installing the ceiling panel, pour water as shown in the following figure, check water drains from the drain pipe connecting port (Transparent) in COOL mode and then check there are no water leaks from the drain pipes.

When the electric work has not finished:

Pull out the float switch connector (3P: Red) from P.C. board connector (CN34: Red) of the electric parts box. (Ensure the power is turned off.)

Connect the single-phase 220-240V, 1N, 50Hz (or 220V, 1N, 60Hz) power to the terminal blocks R (L) and S (N). (Never apply 220-240V to (A), (B), (U1) and (U2).)

Pour water referring to the next page figure. (Amount: 1500 cc to 2000 cc)

When the power is turned on, the drain pump motor drives automatically. Check water is drained from the drain pipe connecting port (Transparent), and then check there is no water leak from the drain pipes.

After checking for water leaks on the drain, turn off the power supply, and re-attach the float switch connector to the original position (CN34) on the P.C. board and refit the electric parts box.

220–240V, 1N ~, 50Hz 220V 1N ~, 60Hz

 

R(L) S(N)

 

White

CN34

Red

(RED)

Black

 

Pull out connector CN34 (Red) from P.C. board.

Black

4 DRAIN PIPING WORK

Thermal insulating process

After checking of the draining, using the supplied thermal insulation fit to the flexible hose leaving no clearance at the connecting port of the indoor unit.

Fit locally procured thermal insulation to the drain pipe leaving no clearance between the supplied insulation.

Flexible hose

Hose band

Attached heat insulator

Heat insulator to be

 

procured locally

Hard vinyl chloride pipe

25

Check panel

Insert the leading part of the hose between the heat exchanger and the drain pan, and then bend it downward.

CAUTION

Ensure water is poured slowly.

To reduce risk of water spreading throughout the unit, resulting in a possible fault.

Air discharge area

Drain pan

Polyethylene hand pump for pouring water in drain pan

Vessel

Water (1500cc to 2000cc)

5 REFRIGERANT PIPING

WARNING

If refrigerant gas leaks during the installation work, ventilate the room immediately.

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

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

If refrigerant gas leaks into the room and flows near to a source of fire, noxious gas may be generated.

REQUIREMENT

When using long length of refrigerant piping. Provide support brackets at intervals of 2.5 m to 3 m. If the pipes are not fixed abnormal sounds may be generated.

Ensure the supplied R410A flare nuts are used.

Permissible pipe length and permissible height difference

This differs depending on the outdoor units. For details, refer to the Installation Manual supplied with the outdoor unit.

Piping material and dimensions

Piping material

Phosphor deoxidization seamless pipe for air conditioner

 

 

 

Indoor unit capacity type MMU-

AP0071 to AP0121 type

AP0151 to AP0181 type

 

 

 

 

Pipe size (mm)

Gas side

Ø9.5

Ø12.7

 

 

 

Liquid side

Ø6.4

Ø6.4

 

 

 

 

 

• Use new and clean pipe, ensuring that the pipes are not contaminated with dust, oil, moisture, etc.

Pipe flaring

Flaring

1. Cut the pipe with a pipe cutter.

OK

NO GOOD

90˚

Obliquity Roughness Warp

2.Place flare nut onto the pipe, and flare the pipe. (Use the flare nut fitted to the unit or one that is R410A compatible)

As the flaring sizes of R410A differ from that used on R22. It is recommended to use a dedicated R410A flaring tool. However a conventional flare tool can be used, by adjustment of the projection of the copper pipe.

• Flaring diam. meter size :

 

 

A

 

A (Unit : mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A +0

Outer diam. of copper pipe

 

 

 

- 0.4

 

 

 

 

R410A

 

 

 

 

 

 

 

 

 

 

6.4

 

 

 

9.1

 

 

 

 

 

 

 

9.5

 

 

 

13.2

 

 

 

 

 

 

 

12.7

 

 

 

16.6

 

 

 

 

 

 

 

15.9

 

 

 

19.7

 

 

 

 

 

 

 

 

 

*In case of flaring for R410A with the conventional flare tool, make a margin of 0.5 mm longer than that of R22 pipe so that the flare size matches with the specified size.

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

26

5 REFRIGERANT PIPING

• Projection margin in flaring :

B

B (Unit : mm)

 

Rigid (Clutch type)

Outer diam. of

R410A tool used

Conventional tool used

 

 

 

 

copper pipe

R410A

R22

R410A

R22

 

 

 

 

 

 

6.4

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

9.5

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

12.7

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

15.9

0 to 0.5

(Same as left)

1.0 to 1.5

0.5 to 1.0

 

 

 

 

 

Imperial (Wing nut type)

Outer diam. of copper pipe

R410A

R22

 

 

 

6.4

1.5 to 2.0

1.0 to 1.5

 

 

 

9.5

1.5 to 2.0

1.0 to 1.5

 

 

 

12.7

2.0 to 2.5

1.5 to 2.0

 

 

 

15.9

2.0 to 2.5

1.5 to 2.0

 

 

 

Connection of refrigerant pipe

Connect all the refrigerant pipes with the flare connection method

As the unit is sealed to atmospheric pressure.

It is not abnormal that no “Push....” sound will be heard upon the removal of the flare nut.

Ensure use of two spanners for the connecting of the pipe work to the indoor unit.

Airtight test/Air purge, etc.

For carrying out airtight test, air purge, gas leak check and addition of refrigerant refer to the Installation Manual supplied with the outdoor unit.

Open fully valves of the outdoor unit

Gas leak check

Using a leak detector or soapy water, check for gas leaks at the connecting pipe work and the caps on the service valves.

REQUIREMENT

Use a leak detector designed specifically for HFC refrigerant (R410A, R134a, etc.).

Heat insulating process

Fit heat insulation to the gas and liquid pipes separately.

During cooling mode, the temperature of the liquid and the gas pipes are reduced. Therefore ensure sufficient insulation is fitted to prevent dew condensation.

On the gas side ensure that the heat insulation used is heat resistant to a minimum temperature of 120°C

Using the supplied heat insulation. Insulate the interconnecting parts of the indoor unit, ensuring that there is no exposure of any refrigerant pipe work. As detailed in the illustration below.

Work using double spanner

• Refer to the following table for tightening torque.

Connecting pipe

Tightening torque

Re-tightening

outer dia. (mm)

(N•m)

torque (N•m)

 

 

 

Ø6.4

14 to 18

18

(1.4 to 1.8 kgf•m)

(1.8 kgf•m)

 

 

 

 

Ø9.5

33 to 42

42

(3.3 to 4.2 kgf•m)

(4.2 kgf•m)

 

 

 

 

Ø12.7

50 to 62

50

(5.0 to 6.2 kgf•m)

(5.0 kgf•m)

 

 

 

 

Ø15.9

68 to 82

68

(6.8 to 8.2 kgf•m)

(6.8 kgf•m)

 

 

 

 

REQUIREMENT

Apply the thermal insulation to the pipe connecting section of the indoor unit securely up to the root without exposure of the pipe. (The pipe exposed to the outside causes water leak.)

 

Set notching upward.

 

Pipe side

Main unit

(Required at the site)

 

 

Attached heat insulating pipe

6 ELECTRIC WORK

WARNING

1.Using the specified wires, ensure the wires are connected and securely fixed so that no external force can transmit to the connecting part of the terminals.

Poor connection may cause risk of fire, etc.

2.Ensure connection of earth wire. (Grounding work)

Do not connect the earth wire to a gas pipe, mains water pipe, lightning rod, or the earth wire of a telephone. Incorrect earthing will cause risk of an electric shock.

3.For electrical installation work, strictly follow the Local and national Regulations of each country and the Installation Manual. A designated power supply must be used.

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

CAUTION

Ensure an earth leakage breaker is installed.

Failure to install, may result in an electric shock.

REQUIREMENT

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

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

Never connect 220–240V control wiring to the terminal blocks (U1, U2, A, B) fault will be. (Caused.)

Arrange the electrical wiring so that they do not come into contact with high-temperature parts of the pipe work; this is to prevent the risk of insulation melting and causing a possible accident.

After connecting wires to the terminal block. Secure wiring with cable clamp.

Store wiring install control wiring and refrigerant piping within the same line.

Do not turn on power of the indoor unit until vacuuming of the refrigerant pipe has finished.

27

6 ELECTRIC WORK

Power supply specifications

Power supply wiring and communication wiring are to be procured locally.

For the power supply specification, follow the table below. Ensure power supply is adequate. An insufficient power supply could result in unit failure.

For specification of the power capacity of the outdoor unit and the power supply wires, refer to the Installation Manual supplied with the outdoor unit.

 

Power supply

220–240V, 1N ~ 50Hz

 

220V, 1N ~ 60Hz

 

 

 

 

 

 

Indoor unit power supply (*1)

Power supply switch/Earth leakage breaker or power supply wiring/fuse rating for indoor

units should be selected by the accommodated total current values of the indoor units.

 

Power supply wiring

20 m or less

Twist wire : 2.5 mm²

 

50 m or less

Twist wire : 3.5 mm²

 

 

 

 

Q’ty

2

 

Indoor/Outdoor inter-unit wiring (*2)

Wire size

(Up to 1000 m) Twist wire : 1.25 mm²

 

 

 

 

(Up to 2000 m) Twist wire : 2.00 mm²

 

 

 

 

 

 

 

Communication line

 

Q’ty

2

Central control line wiring (*3)

 

 

Wire size

(Up to 1000 m) Twist wire : 1.25 mm²

 

 

 

 

 

(Up to 2000 m) Twist wire : 2.00 mm²

 

 

 

 

 

 

 

 

Remote controller wiring (*4)

Q’ty

2

 

 

 

 

Wire size

Twist wire : 0.5 to 2.0 mm²

 

 

 

 

 

 

Indoor unit power supply (*1)

Indoor unit power supply, must have a dedicated supply and be separate to that 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 cable specification : Cable 3-core 2.5 mm², in conformity with Design 60245 IEC 57.

Indoor/Outdoor inter-unit wiring, Central controller wiring

(*2) (*3)

Use a 2 core non polarity cable.

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 cable plus the length of the central control communication cable.

Remote controller wiring (*4)

• For wiring remote controllers, a 2 core polarity cable must be used.

Remote controller wiring, remote

Twist wire: 0.5mm2

to 2.0 mm2

× 2

controller inter-unit wiring

 

 

 

 

 

 

 

Total wire length of remote controller

In case of wired type only

Up to 500 m

wiring and remote controller inter-unit

 

 

In case of wireless type included

Up to 400 m

wiring = L + L1 + L2 + … Ln

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

Up to 200 m

 

 

 

CAUTION

The remote controller wire (Communication line) and AC220– 240V (Power supply) 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.

 

Indoor unit

 

Indoor unit

 

Indoor unit

 

Indoor unit

Remote

 

 

 

 

 

 

 

 

 

 

 

 

 

 

controller

 

L1

 

L2

Ln

wiring

 

 

Remote

Remote controller inter-unit wiring

(Max. 8 units)

 

 

controller

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cable connection

REQUIREMENT

Be sure to locate the cable through the cable connection port of the indoor unit.

Ensure additional wire length of approximately 100 mm at the indoor unit electric parts box. This is to enable ease of any service work in the future.

The low-voltage circuit is provided for the remote controller.

Remove the cover of the electric parts box by removing the mounting screws (3 pcs.) and push the hooking section. (The cover of the electric parts box remains hanged to the hinge.)

Tighten the screws on the terminal block and secure the cables with cord clamp fitted to the electric parts box. (Do not apply tension to the connecting section of the terminal block.)

Using the supplied thermal insulation for the sealing of the cable connecting port, seal the cable connecting port. (Otherwise dew condensation may be caused.)

Mount the cover of the electric parts box ensuring the cables are not pinched. (Mount the cover after the ceiling panel has been wired to the electric box.)

Screws

 

 

 

Electric parts box

P.C. board

 

 

 

 

Screw

 

Cover of electric parts box

Hooking section

 

 

Indoor/Outdoor

 

 

 

crossover cable/

 

 

 

Remote controller

 

Thermal insulation to cabling connecting port

terminal block

 

U1 U2 A B

 

 

 

 

10

R S

 

 

(L) (N)

 

 

 

 

 

70

10

50

Power supply

 

 

Adhered surface

terminal block

 

 

 

R(L) S(N)

 

 

Heat insulator A

 

 

 

Earth line

Connecting cord

Notched section

Cord clamp

Heat insulator B

28

6 ELECTRIC WORK

Remote controller wiring

Strip approximately 14 mm of insulation off of the connecting wires.

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

Wiring diagram

Terminal block for remote controller

Terminal block

wiring of indoor unit

 

 

A

A

Remote

B

B

controller unit

Remote controller wire (Field supply)

Wiring between indoor and outdoor units

Outdoor power supply

Outdoor power supply

Header outdoor unit

Follower outdoor unit

U1 U2 U3 U4 U5 U6

U1 U2 U3 U4 U5 U6

Earth

Earth

Control wiring between outdoor units

NOTE

An outdoor unit that is inter-connected to the indoor units automatically becomes the header unit.

 

Control wiring between indoor and outdoor units

 

 

 

 

Control wiring between indoor units

 

Connection of shield wire closed terminal

 

 

 

 

 

Indoor unit

Indoor unit

Indoor unit

 

Indoor unit

 

Earth

Earth

Earth

 

Earth

 

L N U1 U2 A B

L N U1 U2 A B

L N

U1 U2 A B

L N U1 U2 A B

 

A B

A B

 

A B

 

Indoor power supply

Remote

Remote

 

Remote controller

 

220-240V, 1N ~50Hz

controller

controller

 

[Group control]

 

220V, 1N ~60Hz

 

 

 

 

 

 

 

Earth leakage

Pull box

Pull box

Pull box

 

breaker

 

 

 

 

 

Power switch

 

 

 

 

 

Address setup

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

Wiring on the ceiling panel

As per the Installation Manual of the ceiling panel, connect the connector (2P: Red) of the ceiling panel to the connector (5P: White) onto the P.C. board within the electric parts box.

5P connector (White)

Cord Clamp

Wire from ceiling panel

7 APPLICABLE CONTROLS

NOTIFICATION

When using the equipment for the first time, the remote controller will not accept any commands for a short period of time.

Automatic address

While automatic addressing no operations can be performed on the remote controller.

Automatic addressing will take a maximum duration of 10 minutes (generally 5 minutes).

Upon turning on the unit after completion of automatic addressing, a maximum period of

10 minutes (generally 3 minutes) are required prior to the start up operation of the outdoor unit.

All indoor units are shipped from factory as standard. Change if necessary.

To change the setup use the main remote controller (wired remote controller).

*The setup change for wireless remote controller, sub remote controller or a unit without a controller (Centrally controlled.) is not possible. In such cases, temporarily install a separate main remote controller.

Applicable control setup

Basic operation procedure for setup change

Change the setup while operation of the equipment is stopped. (Be sure to stop the operation of a set.)

CODE No.

UNIT No.

R.C.

No.

6

TEMP.

 

 

ON / OFF

3

 

TIMER SET

FAN

MODE

1

 

TIME

SWING/FIX

VENT

2

FILTER

 

 

 

RESET TEST

SET CL

UNIT

 

6

 

 

 

 

5

Procedure

 

Description

 

 

 

 

 

 

 

Push the SET , CL and TEST buttons simultaneously for 4 seconds or more, after a while, the display part flashes

 

as shown in the figure.

 

 

 

 

 

 

 

Check that the displayed item code is [10].

 

 

 

SETTING

 

CODE No.

1

If the item code indicates any characters other than [10], push the

TEST

 

UNIT No.

 

 

 

 

 

 

 

button to erase the display and retry the operation from the first step.

 

 

 

R.C. No.

 

 

(For some time after the TEST button has been pushed, the operation

 

 

 

 

 

 

of the remote controller cannot be accepted.)

 

 

 

 

 

 

 

 

(In a group control, the firstly displayed

 

(* The display changes according

 

 

indoor unit No. becomes the center unit.)

 

 

to the indoor unit model.)

 

Each time the

UNIT

button is pushed, the indoor unit No. in the group control is displayed consecutively.

 

 

2

Select the indoor unit that requires a change to the setup.

 

 

 

 

 

During this time the indoor unit that is selected can be

 

 

 

 

 

3

confirmed as the louver and fan will be operated.

 

 

 

 

 

 

 

 

 

 

 

 

 

Using

TEMP.

the buttons, select the item code [**].

 

 

 

 

CODE No.

 

 

 

 

 

 

 

 

UNIT No.

 

4

 

 

TIME

 

 

 

 

R.C.

No.

 

Using the

buttons, select set data [****].

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Push the SET button. During this time, if the display changes from flashing to permanently on, the setup is complete.

5

• To change the setup of an indoor unit that is not selected, restart operation from Procedure 2.

• To change to a different setup within the selected indoor unit, restart operation from Procedure 3. Pushing the CL button clears the set up contents which has been set. In this case, restart from Procedure 2.

 

When the setup is finished, push the TEST button. (The setup is configured.)

6

Pushing the TEST button deletes the display and returns the status to the

normal stopped status.

(For a period of time after the TEST button has been pushed, the remote

 

controller will not accept any commands.)

29

7 APPLICABLE CONTROLS

In case of installation to high ceiling

When the unit is to be installed at a height that exceeds the standard value, adjustment to the air volume is necessary.

• For the “Setup data” in Procedure 2 , select from the “Installable ceiling height list”.

Installable ceiling height list

Indoor unit capacity type

0071 to 0121 type

 

0151 type

 

 

0181 type

 

Setup of high ceiling

 

 

 

 

 

 

 

 

 

 

 

 

Discharge direction

4-way

3-way

2-way

4-way

3-way

 

2-way

4-way

3-way

 

2-way

Setup data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standard (At shipment)

2.7

2.9

 

 

3.2

 

 

0000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High ceiling (2)

3.2

 

 

3.4

 

 

0002

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High ceiling (3)

3.5

 

 

3.5

 

 

0003

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Unit: m)

In case of remote controller-less (Group control)

To set the unit to high ceiling operation, there is a method that requires the changing of the short plugs on the indoor P.C. board. The details are shown in the below table.

This method is only to be used where a standard wired remote controller (Group control) is not used.

Upon changing the high ceiling setting

• Select setting by the changing of the short plugs

• Short plug position

on the indoor P.C. board.

(CN112, CN111, CN110 from the left)

 

 

 

 

 

 

 

 

 

 

 

Short plug position

 

 

 

 

 

 

 

 

 

 

Set

Filter sold separately

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Short Open

 

 

CN112 CN111 CN110

0000 Standard filter (At shipment)

CN112 CN111 CN110

0003 High ceiling (3)

Change of lighting time of filter sign

Depending on the conditions of the installation, the time period of the filter clean sign can be changed.

Follow to the basic operation procedure

(1 2 3 4 5 6 ).

For the item code in Procedure 3 , specify [01].

For the [Set data] in Procedure 4 , select the setup data of filter sign lighting time from the following table.

Setup data

Filter sign lighting time

 

 

 

0000

 

None

 

 

 

0001

150H

 

 

 

 

0002

2500H

(At shipment from factory)

 

 

 

0003

5000H

 

 

 

 

0004

10000H

 

 

 

 

Increased heating effect

If it is not possible to achieve satisfactory heating due to the installation environment or the structure of the room. The detected temperature can be increased. Also use a circulator, etc to circulate hot air near the ceiling.

Follow to the basic operation procedure

(1 2 3 4 5 6 ).

For the item code in Procedure 3 , specify [06].

For the set data in Procedure 4 , select the setup data of the required temperature shift value from the table below.

Setup data

Detection temp shift value

 

 

0000

No shift

 

 

0001

+1°C

 

 

0002

+2°C (At shipment from factory)

 

 

0003

+3°C

 

 

0004

+4°C

 

 

0005

+5°C

 

 

0006

+6°C

 

 

Group control

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

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

Wiring between indoor units in a group is performed in the following method.

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.

(No polarity)

For address setup, refer to the Installation Manual supplied with the outdoor unit.

30

8 TEST RUN

Before test operation

WARNING

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

To protect the compressor at

procedures.

startup. Ensure the power supply

1) Using 500V-megger, check there is 1MΩ or more between the

is left on for 12 or more hours

terminal block of the power supply and the earth.

before operation.

If 1MΩ or less is detected, do not run the unit.

 

2)Check that all the valves of the outdoor unit are fully opened.

Never push the electromagnetic contactor to carry out a forced test operation. (It is very dangerous because a protective device does not work.)

How to execute test operation

To carry out a fan operation in a single indoor unit, firstly turn off the power supply to the unit. Then short CN72 found on the P.C. board. Once completed turn the power to the unit back on and start the unit in FAN only mode. Upon completion of the test do not forget to remove the short circuit on CN72.

Using the remote controller, check the unit is in normal operation. For the operation procedure, refer to the supplied Owner’s Manual. A forced test operation can be executed in the following procedure under the condition of thermo.-OFF of room temperature.

In order to prevent the test operation from running continuously, the operation will cease after a period of 60 minutes. The unit will then return back to its original operation.

 

 

NOTE

 

 

 

 

TEMP.

 

ON / OFF

 

 

 

 

Do not use a forced operation in cases other

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2, 4

than test operation because it applies an

 

 

 

TIMER SET

FAN

 

MODE

 

 

 

 

 

 

 

 

 

excessive load onto the air conditioner.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TIME

SWING/FIX

 

VENT

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1, 5

 

FILTER

 

 

 

 

 

 

 

In case of wired remote controller

 

 

RESET TEST SET CL

UNIT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Procedure

 

 

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Keep the TEST button pushed down for 4 seconds or more.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

TEST

 

 

 

 

 

[TEST] is displayed on the display part and the selection of the test mode is

 

 

 

 

 

 

 

 

 

 

permitted.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

Push

ON / OFF button.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Using

MODE button, select the operation mode, [COOL] or [HEAT].

 

 

 

 

 

 

 

 

 

3

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

 

 

 

 

 

 

 

 

 

• The temperature controlling function will not work during the test operation.

 

 

 

 

 

 

 

 

 

 

• Fault detection will perform as usual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

After the test operation, push the ON / OFF button to stop the operation.

 

 

 

 

 

 

 

 

 

(Display part is the same as procedure 1 )

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

Push the TEST button to cancel (release from) the test operation mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

([TEST] disappears on the display part and the status returns to normal.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In case of wireless remote controller

Procedure

Description

Remove a small screw which fixes the nameplate of the receiver unit.

1 Remove the nameplate of the sensor section by inserting a minus screwdriver, etc into the notch at the bottom of the plate, and set the Dip switch to [TEST RUN ON].

Execute a test operation with button on the wireless remote controller.

2

 

, , and

LED flash during test operation.

 

• Under status of [TEST RUN ON], the temperature adjustment from the wireless remote controller is invalid.

Do not use this method in the operation other than test operation because the equipment is damaged.

3

Use either COOL or HEAT operation mode for a test operation.

* The outdoor unit does not operate approx. 3 minutes after power-ON and operation stop.

 

 

4

After the test operation finished, stop the air conditioner from the wireless remote controller, and return Dip

switch of the receiver section as before.

(A 60-minutes timer clearing function is attached to the receiver section in order to prevent a continuous test

 

operation.)

Receiver unit

Spacer

M4 × 25 screw (2 pieces)

Small screw

Notch Nameplate

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