Toshiba RAS-13G2KCVP-T, RAS-10G2KCVP-T, RAS-18G2ACVP-T, RAS-18G2KCVP-T, RAS-10G2ACVP-T Service Manual

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R410A

SERVICE MANUAL

SPLIT TYPE

Indoor Unit Outdoor Unit

Revised on Oct

2015

RAS-10G2KCVP-

RAS-13G2KCVP-

RAS-18G2KCVP-

RAS-10G2ACVP-

AS-13G2ACVP-

RAS-18G2ACVP-

FILE NO. SVM-15058-1

CONTENTS

1. SAFETY PRECAUTIONS .......................................................................... 3

2. SPECIFICATIONS ..................................................................................... 6

3. REFRIGERANT R410A ............................................................................. 8

4. CONSTRUCTION VIEWS ........................................................................ 16

5. WIRING DIAGRAM .................................................................................. 18

6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 19

7. REFRIGERANT CYCLE DIAGRAM ........................................................ 20

8. CONTROL BLOCK DIAGRAM ................................................................ 23

9. OPERATION DESCRIPTION................................................................... 25

10.

INSTALLATION PROCEDURE ................................................................ 59

11.

HOW TO DIAGNOSE THE TROUBLE ...................................................... 74

12.

HOW TO REPLACE THE MAIN PARTS.................................................... 99

13.

EXPLODED VIEWS AND PARTS LIST .................................................. 116

FILE NO. SVM-15058

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1. SAFETY PRECAUTIONS

Installing, staring up, and servicing air-conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install, start-up, and service this equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be

performed by trained service personnel.

When working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment.

Follow all safety codes, Wear safety glasses and work gloves. Keep quenching cloth and fire extinguisher near by when brazing. Use care in handling, rigging, and setting bulky equipment.

Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information. This is the safety-alert symbol

! . When you see this symbol on

the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words : DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol.

DANGER identifies the most serious hazards which will result in severs personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

• Before installation, please read these precautions for safety carefully.

• Be sure to follow the precautions provided here to avoid safety risks. The symbols and their meanings are shown below.

WARNING : It indicates that incorrect use of this unit may cause severe injury or death. CAUTION : FAILURE TO FOLLOW THIS CAUTION may result in equipment damage or improper operation and

personal injury.

CAUTION

New refrigerant air conditioner installation

• THIS AIR CONDITIONER USES THE NEW HFC REFRIGERANT (R410A), WHICH DOES NOT DESTROY THE

OZONE LAYER.

R410A refrigerant is affected by inpurities such as water and oils because the pressure of R410A refrigerant is approx.

1.6 times of refrigerant R22. ALSO NEW OILS ARE USED WITH R410A, THUS ALWAYS USE NEW REFRIGERANT PIPING AND DO NOT ALLOW MOISTURE OR DUST TO ENTER THE SYSTEM. To avoid mixing refrigerant and refrigerant machine oil, the sizes of charging port on the main unit is different than those used on R22 machines and different tools will be required.

• EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation. Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any section of pipe is buried, there must be a 6 in. (152 mm) vertical rise to the valve connections on the outdoor units. If more than the recommended length is buried, refrigerant may migrate to the cooter buried section during extended periods of system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start-up.

FILE NO. SVM-15058

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DANGER

• FOR USE BY QUALIFIED PERSONS ONLY.

• TURN OFF MAIN POWER SUPPLY BEFORE.ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER

SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY,

ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.

FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT OVERHEATION THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY

(MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATERS, FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY CAREFUL NOT

TO GET THE SPECIFIED REFRIGERANT (R410A) WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT LEAK, DURING INSTALLATION WORK, IMMEDIATELY ALLOW FRESH AIR

INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSE GENERATION OF POISONOUS GAS.

WARNING

• ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death. Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label.

• Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock switches.

• Installation work must be purformed by qualified personnel only.

• Specified tools and pipe parts for model R410A are required, and installation work must be done in accordance with the

manual. HFC type refrigerant R410A has 1.6 times more pressure than that of conventional refrigerant (R22). Use the specified pipe parts, and ensure correct installation, otherwise damage and/or injury may be caused. At the same time, water leakage, electrical shock, and fire may occur.

• Be sure to install the unit in a place which can sufficiently bear its weight. If the load bearing of the unit is not enough, or

installation of the unit is improper, the unit may fall and result in injury.

• Electrical work must be performed by trained, qualified installers and service mechanics in accordance with the code governing

such installation work, internal wiring regulations, and the manual. A dedicated circuit and the rated voltage must be used.

Insufficient power supply or improper installation may cause electrical shock or fire.

• Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection is not allowed. Improper connection or

fixing may cause a fire.

• Wiring between the indoor unit and outdoor units must be well shaped so that the cover can be firmly placed. Improper

cover installation may cause increased heat, fire, or electrical shock at the terminal area.

• Be sure to use only approved accessories or the specified parts. Failure to do so may cause the unit to fall, water leakage,

fire or electrical shock.

• After the installation work. ensure that there is no leakage of refrigerant gas. If the refrigerant gas leaks out of the pipe into

the room and is heated by fire or something else from a fanheater, stove or gas range, it causes generation of poisonous gas.

• Make sure the equipment is properly grounded. Do not connect the ground wire to a gas pipe, water pipe, lightning

conductor, or telephone earth wire. Improper earth work may be the cause of electrical shock.

• Do not install the unit where flammable gas may leak. If there is any gas leakage or accumulation around the unit, it can

cause a fire.

• Do not select a location for installation where there may be excessive water or humidity, such as a bathroom. Deterioration

of insulation nay cause electrical shock or fire.

• Installation work must be performed following the instructions in this installation manual. Improper installation may cause

water leakage, electrical shock or fire. Check the following items before operating the unit.

- Be sure that the pipe connection is well placed and there are no leaks.

- Check that the service valve is open. If the service valve is closed, it may cause overpressure and result in compressor damage. At the same time, if there is a leak in the connection part, it may cause air suction and overpressure, resulting in damage to the unit or injury.

• In a pump-down operation, be sure to stop the compressor unit before removing the refrigerant pipe. If removing the

refrigerant pipe while the compressor is operating with the service valve opened, it may cause air suction and overpressure, resulting in damage to the unit or injury.

• Do not modity the power cable, connect the cable midway, or use a multiple outlet extension cable. Doing so may cause

contact failure, insulation failure, or excess current, resulting in fire or electrical shock.

• If you detect any damage, do not install the unit. Contact your dealer immediately.

FILE NO. SVM-15058

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CAUTION

• Exposure of unit to water or other moisture before installation could result in electric shock. Do not store it in a wet

basement or expose to rain or water.

• After unpacking the unit, examine it carefully for possible damage. Report any damages to your distributor.

• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify

the noise level of the unit or where noise and discharged air might disturb neighbors.

• Please read this installation manual carefully before installing the unit. It contains further important instructions

for proper installation.

• This appliance must be connected to the main power supply by means of a circuit breaker depending on the

place where the unit is installed. Failure to do so may cause electrical shock.

• Follow the instructions in this installation manual to arrange the drain pipe for proper drainage from the unit.

Ensure that drained water is discharged. Improper drainage can result is water leakage, causing water damage to furniture.

• Tighten the flare nut with a torque wrench using the prescribed method. Do not apply excess torque. Otherwise,

the nut may crack after a long period of usage and it may cause the leakage of refrigerant.

• Wear gloves (heavy gloves such as cotton gloves) for installation work. Failure to do so may cause personal

injury when handling parts with sharp edges.

• Do not touch the air intake section or the aluminum fins of the outdoor unit. It may cause injury.

• Do not install the outdoor unit in a place which can be a nest for small animals. Small animals could enter and

contact internal electrical parts, causing a failure or fire.

• Request the user to keep the place around the unit tidy and clean.

• Make sure to conduct a trial operation after the installation work, and explain how to use and maintain the unit

to the customer in accordance with the manual. Ask the customer to keep the operation manual along with the installation manual.

FILE NO. SVM-15058

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2-1. Speciﬁcations

Unit model Indoor

RAS-10G2KCVP-T RAS-13G2KCVP-T RAS-18G2KCVP-T

Outdoor

RAS-10G2ACVP-T RAS-13G2ACVP-T RAS-18G2ACVP-T

Cooling capacity (kW)

2.6 3.8 5.1

Cooling capacity range (kW)

1.3-3.5 1.3-4.1

1.1-6.0

Power supply

1Ph/50Hz/220V

Electric characteristic

Indoor Operation mode

Cooling Cooling Cooling

Running current (A)

0.24 0.24 0.24

Power consumption (W)

25 25 25

Power factor (%)

47 47 47

Outdoor Operation mode

Cooling Cooling Cooling

Running current (A)

2.96 4.77 7.12

Power consumption (W)

555 1035 1555

Power factor (%)

92 99

Starting current (A)

2.97 5.01 7.36

COP

4.48 3.58 3.23

Operating noise

Indoor High (dB-A)

Medium (dB-A)

33 34 35

Low (dB-A)

24 25 26

Outdoor (dB-A)

49 50 52

Indoor unit Unit model

RAS-10G2KCVP-T RAS-13G2KCVP-T RAS-18G2KCVP-T

Dimension Height (mm)

293

Width (mm)

831

Depth (mm)

270

Net weight (kg)

Fan motor output (W)

Air ﬂ ow rate (m3/min)

10.8 11.2 11.6

Outdoor unit Unit model

RAS-10G2ACVP-T RAS-13G2ACVP-T RAS-18G2ACVP-T

Dimension Height (mm)

550 550

Width (mm)

780 780

Depth (mm)

290 290

Net weight (kg)

37 36

Compressor Motor output (W)

1100

Type

750

Single rotary type with DC inverter variable

speed control

Twin rotary type with

DC inverter variable

speed control

Model

DA108X1C-23FZ DA131S1B-31FZ

Fan motor output (W)

43 43

Air ﬂ ow rate (m3/min)

30 37.5

34.0

Piping connection

Type

Flare connection Flare connection

Indoor unit Liquid side (mm)

Ø6.35 Ø6.35

Gas side (mm)

Ø9.52 Ø12.70

Outdoor unit Liquid side (mm)

Ø6.35 Ø6.35

Gas side (mm)

Ø9.52 Ø12.70

Maximum length (m)

20 20

(m)

15 15

Maximum chargeless length Maximum height difference (m)

10 10

Refrigerant Name of refrigerant

R410A R410A

Weight (kg)

1.40

Wiring connection

Power supply

1.1

3Wires:includes earth(Outdoor)

Interconnection

4Wires:includes earth

Usable temperature range

Indoor (°C)

21~32

Outdoor (°C)

-10~43

Accessory Indoor unit Installation plate

Wireless remote controller

Batteries

Remote controller holder

1 Mounting screw 6(Ø4x25L) Remote controller holder

Pan head wood screw

2(Ø3.1x16L)

Installation manual

1 Owner’s manual

Outdoor unit Drain nipple

Water-proof rubber cap

* The speciﬁcations may be subject to change without notice for purpose of improvement.

SPECIFICATIONS

FILE NO. SVM-15058

- 6 -

2-2. Operation Characteristic Curve

2-3. Capacity Variation Ratio According to Temperature

100

105

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

Outdoor Temp. (°C)

Capacity Ratio (%)

Conditions Indoor: DB27°C/WB19°C Indoor air flow: High Pipe length: 7.5m

Capa

city r

atio: 100% =

2.6kW (RAS-10G2KCVP-T)

3.8kW (RAS-13G2KCVP-T)

5.1

kW (RAS-18G2KCVP-T)

RAS-10G2KCVP-T RAS-13G2KCVP-T RAS-18G2KCVP-T

10 20 30 40 50 60 70 80 90 100 110 120

FILE NO. SVM-15058

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3. REFRIGERANT R410A

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

The working pressure of the new refrigerant R410A is 1.6 times higher than conventional refrigerant (R22). The refrigerating oil is also changed in accordance with change of refrigerant, so be careful that water, dust, and existing refrigerant or refrigerating oil are not entered in the refrigerant cycle of the air conditioner using the new refrigerant during installation work or servicing time.

The next section describes the precautions for air conditioner using the new refrigerant. Conforming to contents of the next section together with the general cautions included in this manual, perform the correct and safe work.

3-1. Safety During Installation/Servicing

As R410A’s pressure is about 1.6 times higher than that of R22, improper installation/servicing may cause a serious trouble. By using tools and materials exclusive for R410A, it is necessary to carry out installation/servicing safely while taking the following precautions into consideration.

1. Never use refrigerant other than R410A in an air conditioner which is designed to operate with R410A.

If other refrigerant than R410A is mixed, pressure in the refrigeration cycle becomes abnormally high, and it may cause personal injury, etc. by a rupture.

2. Confirm the used refrigerant name, and use tools and materials exclusive for the refrigerant R410A.

The refrigerant name R410A is indicated on the visible place of the outdoor unit of the air conditioner using R410A as refrigerant. To prevent mischarging, the diameter of the service port differs from that of R22.

3. If a refrigeration gas leakage occurs during installation/servicing, be sure to ventilate fully.

If the refrigerant gas comes into contact with fire, a poisonous gas may occur.

4. When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a rupture or personal injury may be caused.

5. After completion of installation work, check to make sure that there is no refrigeration gas leakage.

If the refrigerant gas leaks into the room, coming into contact with fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.

6. When an air conditioning system charged with a large volume of refrigerant is installed in a small room, it is necessary to exercise care so that, even when refrigerant leaks, its concentration does not exceed the marginal level.

If the refrigerant gas leakage occurs and its concentration exceeds the marginal level, an oxygen starvation accident may result.

7. Be sure to carry out installation or removal according to the installation manual.

Improper installation may cause refrigeration trouble, water leakage, electric shock, fire, etc.

8. Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner technician or electrician.

Improper repair’s may result in water leakage, electric shock and fire, etc.

3-2. Refrigerant Piping Installation

3-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes and joints are mainly used. Copper pipes and joints suitable for the refrigerant must be chosen and installed. Furthermore, it is necessary to use clean copper pipes and joints whose interior surfaces are less affected by contaminants.

1. Copper Pipes

It is necessary to use seamless copper pipes which are made of either copper or copper alloy and it is desirable that the amount of residual oil is less than 40 mg/10 m. Do not use copper pipes having a collapsed, deformed or discolored portion (especially on the interior surface).

Otherwise, the expansion valve or capillary tube may become blocked with contaminants.

As an air conditioner using R410A incurs pressure higher than when using R22, it is necessary to choose adequate materials.

Thicknesses of copper pipes used with R410A are as shown in Table 3-2-1. Never use copper pipes thinner than 0.8 mm even when it is available on the market.

FILE NO. SVM-15058

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Table 3-2-1 Thicknesses of annealed copper pipes

Nominal diameter

1/4

3/8

1/2

5/8

Outer diameter (mm)

6.35

9.52

12.70

15.88

Thickness (mm)

R410A R22

0.80 0.80

1.00 1.00

2. Joints

For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants. a) Flare Joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds 20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.

b) Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose diameter is larger than 20 mm.

Thicknesses of socket joints are as shown in Table 3-2-2.

Table 3-2-2 Minimum thicknesses of socket joints

Nominal diameter

1/4

3/8

1/2

5/8

Reference outer diameter of

copper pipe jointed (mm)

6.35

9.52

12.70

15.88

Minimum joint thickness

(mm)

0.50

0.60

0.70

0.80

3-2-2. Processing of Piping Materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used, and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any other cover.

1. Flare processing procedures and precautions

a) Cutting the Pipe

By means of a pipe cutter, slowly cut the pipe so that it is not deformed.

b) Removing Burrs and Chips

If the flared section has chips or burrs, refrigerant leakage may occur. Carefully remove all burrs and clean the cut surface before installation.

c) Insertion of Flare Nut

FILE NO. SVM-15058

- 9 -

ØD

d) Flare Processing

Make certain that a clamp bar and copper pipe have been cleaned.

By means of the clamp bar, perform the flare processing correctly.

Use either a flare tool for R410A or conventional flare tool.

Flare processing dimensions differ according to the type of flare tool. When using a conventional flare tool, be sure to secure “dimension A” by using a gauge for size adjustment.

Fig. 3-2-1 Flare processing dimensions

Table 3-2-3 Dimensions related to flare processing for R410A

Nominal

diameter

1/4

3/8

1/2

5/8

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

A (mm)

Flare tool for R410A

clutch type

0 to 0.5

Conventional flare tool

Clutch type Wing nut type

1.0 to 1.5 1.5 to 2.0

1.0 to 1.5 2.0 to 2.5

Table 3-2-4 Dimensions related to flare processing for R22

Nominal

diameter

1/4

3/8

1/2

5/8

Outer

diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

A (mm)

Flare tool for R22

clutch type

0 to 0.5

Conventional flare tool

Clutch type Wing nut type

0.5 to 1.0 1.0 to 1.5

0.5 to 1.0 1.5 to 2.0

Table 3-2-5 Flare and flare nut dimensions for R410A

Nominal

diameter

1/4

3/8

1/2

5/8

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Thickness

(mm)

0.8

1.0

Dimension (mm)

ABCD

9.1 9.2 6.5 13

13.2 13.5 9.7 20

16.6 16.0 12.9 23

19.7 19.0 16.0 25

Flare nut width

(mm)

FILE NO. SVM-15058

- 10 -

43° to 45°

45° to 46°

B A

Table 3-2-6 Flare and flare nut dimensions for R22

Nominal

diameter

1/4

3/8

1/2

5/8

3/4

Outer diameter

(mm)

6.35

9.52

12.70

15.88

19.05

Thickness

(mm)

0.8

1.0

Dimension (mm)

ABCD

9.0 9.2 6.5 13

13.0 13.5 9.7 20

16.2 16.0 12.9 20

19.7 19.0 16.0 23

23.3 24.0 19.2 34

Flare nut width

(mm)

Fig. 3-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions

a) Make sure that the flare and union portions do not have any scar or dust, etc. b) Correctly align the processed flare surface with the union axis. c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is

the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur. When it is strong, the flare nut may crack and may be made non-removable. When choosing the tighten-

ing torque, comply with values designated by manufacturers. Table 3-2-7 shows reference values.

NOTE :

When applying oil to the flare surface, be sure to use oil designated by the manufacturer. If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 3-2-7 Tightening torque of flare for R410A [Reference values]

Nominal

diameter

1/4

3/8

1/2

5/8

Outer diameter

(mm)

6.35

9.52

12.70

15.88

Tightening torque

N•m (kgf•cm)

14 to 18 (140 to 180)

33 to 42 (330 to 420)

50 to 62 (500 to 620)

63 to 77 (630 to 770)

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

16 (160), 18 (180)

42 (420)

55 (550)

65 (650)

FILE NO. SVM-15058

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3-3. Tools

3-3-1. Required Tools

The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

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

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

3. Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.

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

Tools whose specifications are changed for R410A and their interchangeability

No.

Used tool

Flare tool

Copper pipe gauge for adjusting projection margin

Torque wrench (For Ø12.7)

Gauge manifold

Charge hose

Vacuum pump adapter

Electronic balance for refrigerant charging

Refrigerant cylinder

Leakage detector

Charging cylinder

Usage

Pipe flaring

Flaring by conventional flare tool

Connection of flare nut

Evacuating, refrigerant charge, run check, etc.

Vacuum evacuating

Refrigerant charge

Gas leakage check

Refrigerant charge

R410A

air-water heat pump installation

Existence of new equipment for R410A

Ye s

(Note 2)

Whether conventional equipment can be used

*(Note 1)

× ×

Conventional air-water

heat pump installation

Whether new equipment can be used with conventional refrigerant

*(Note 1)

(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 Use vacuum pump by attaching vacuum pump adapter.

2. Torque wrench (For Ø6.35, Ø9.52)

3. Pipe cutter

4. Reamer

5. Pipe bender

6. Level vial

7. Screwdriver (+, –)

8. Spanner or Monkey wrench

9. Hole core drill (Ø65)

10. Hexagon wrench (Opposite side 4mm)

11. Tape measure

12. Metal saw

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

1. Clamp meter

2. Thermometer

3. Insulation resistance tester

4. Electroscope

FILE NO. SVM-15058

- 12 -

Connect the charge hose to packed valve service port at the outdoor unit’s gas side.

Recover the refrigerant, and check no refrigerant remains in the equipment.

(For refrigerant charging, see the figure below.)

Connect the charge hose to the vacuum pump adapter.

Open fully both packed valves at liquid and gas sides.

Place the handle of the gauge manifold Low in the fully opened position, and turn on the vacuum pump’s power switch. Then, evacuating the refrigerant in the cycle.

When the compound gauge’s pointer has indicated –0.1 Mpa (–76 cmHg), place the handle Low in the fully closed position, and turn off the vacuum pump’s power switch.

Keep the status as it is for 1 to 2 minutes, and ensure that the compound gauge’s pointer does not return.

Set the refrigerant cylinder to the electronic balance, connect the connecting hose to the cylinder and the connecting port of the electronic balance, and charge liquid refrigerant.

(Indoor unit)

(Outdoor unit)

Opened

Refrigerant cylinder

(with siphon)

Check valve

Open/close valve for charging

Electronic balance for refrigerant charging

Opened

Closed

Service port

3-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the following steps.

1. Never charge refrigerant exceeding the specified amount.

2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.

3. Do not carry out additional charging. When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the

refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high pressure, and may cause a rupture or personal injury.

Fig. 3-4-1 Configuration of refrigerant charging

FILE NO. SVM-15058

- 13 -

Gauge manifold

[ Cylinder with siphon ] [ Cylinder without siphon ]

OUTDOOR unit

Gauge manifold

OUTDOOR unit

Refrigerant

cylinder

Electronic

balance

Refrigerant

cylinder

Electronic

balance

Siphon

1. Be sure to make setting so that liquid can be charged.

2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.

It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant. Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the cylinder upside down if cylinder is not equipped with siphon.

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

3-5. Brazing of Pipes

3-5-1. Materials for Brazing

1. Silver brazing filler

Silver brazing filler is an alloy mainly composed of silver and copper. It is used to join iron, copper or copper alloy, and is relatively expensive though it excels in solderability.

2. Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used to join copper or copper alloy.

3. Low temperature brazing filler

Low temperature brazing filler is generally called solder, and is an alloy of tin and lead. Since it is weak in adhesive strength, do not use it for refrigerant pipes.

1. Phosphor bronze brazing filler tends to react with sulfur and produce a fragile compound water solution, which may cause a gas leakage. Therefore, use any other type of brazing filler at a hot spring resort, etc., and coat the surface with a paint.

2. When performing brazing again at time of servicing, use the same type of brazing filler.

3-5-2. Flux

1. Reason why flux is necessary

• By removing the oxide film and any foreign matter on the metal surface, it assists the flow of brazing filler.

• In the brazing process, it prevents the metal surface from being oxidized.

• By reducing the brazing filler’s surface tension, the brazing filler adheres better to the treated metal.

Fig. 3-4-2

FILE NO. SVM-15058

- 14 -

Nitrogen gas

cylinder

Pipe

Flow meter

Stop valve

From Nitrogen cylinder

Nitrogen gas

Rubber plug

2. Characteristics required for flux

• Activated temperature of flux coincides with the brazing temperature.

• Due to a wide effective temperature range, flux is hard to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and brazing filler is minimum.

• It excels in coating performance and is harmless to the human body.

As the flux works in a complicated manner as described above, it is necessary to select an adequate type of flux according to the type and shape of treated metal, type of brazing filler and brazing method, etc.

3. Types of flux

• Noncorrosive flux

Generally, it is a compound of borax and boric acid. It is effective in case where the brazing temperature is higher than 800°C.

• Activated flux

Most of fluxes generally used for silver brazing are this type. It features an increased oxide film removing capability due to the addition of compounds such as potassium fluoride, potassium chloride and sodium fluoride to the borax-boric acid compound.

4. Piping materials for brazing and used brazing filler/flux

1. Do not enter flux into the refrigeration cycle.

2. When chlorine contained in the flux remains within the pipe, the lubricating oil deteriorates. Therefore, use a flux which does not contain chlorine.

3. When adding water to the flux, use water which does not contain chlorine (e.g. distilled water or ion-exchange water).

4. Remove the flux after brazing.

3-5-3. Brazing

As brazing work requires sophisticated techniques, experiences based upon a theoretical knowledge, it must be performed by a person qualified.

In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while letting dry Nitrogen gas (N2) flow.

Never use gas other than Nitrogen gas.

1. Brazing method to prevent oxidation

1) Attach a reducing valve and a flow-meter to the Nitrogen gas cylinder.

2) Use a copper pipe to direct the piping material, and attach a flow-meter to the cylinder.

3) Apply a seal onto the clearance between the piping material and inserted copper pipe for Nitrogen in order to prevent backflow of the Nitrogen gas.

4) When the Nitrogen gas is flowing, be sure to keep the piping end open.

5) Adjust the flow rate of Nitrogen gas so that it is lower than 0.05 m3/Hr or 0.02 MPa (0.2kgf/cm2) by means of the reducing valve.

6) After performing the steps above, keep the Nitrogen gas flowing until the pipe cools down to a certain extent (temperature at which pipes are touchable with hands).

7) Remove the flux completely after brazing.

Fig. 3-5-1 Prevention of oxidation during brazing

Piping material

Copper - Copper

Copper - Iron

Iron - Iron

Used brazing filler

Phosphor copper

Silver

Used flux

Do not use

Paste flux

Vapor flux

FILE NO. SVM-15058

- 15 -

4. CONSTRUCTION VIEWS

4-1. Indoor Unit

831

293

Air filter

Heat exchanger

Plasma ion charger (Air purifier)

Picoion generator

64 64

70.5 38

590

225 225

137 104

293

174

156 156

102 174

198

Outline of indoor unit

HangerHanger

Installation plate outline

Center line

Hanger

Minimum distance to wall

Minimum distance

to wall

Minimum distance

to wall 52mm

or more

190mm

or more

225mm

or more

Front panel

Knock out system

270

6 64

Knock out system

104.3

312

150 150 150 150

131.5 99

Drain hose (0.6m)

Connecting pipe(0.37m) (For 25, 35 Series : Flare

9.52mm)

Connecting pipe(0.41m) Flare

6.35mm

HangerHanger

Remote controller holder

149

Wiress remote controller

188

FILE NO. SVM-15058

- 16 -

4-2. Outdoor Unit

320

306

ZView

600

A detail Drawing (Back leg)

320

306

11 x 14

Hole

(For

10 anchor bolt)

B Detail Drawing (Front leg)

25 Drain outlet

FAN-GUARD

COVER-PV

Liquid side (FlareØ6.35)

Gas side (Flare Ø 9.52 for RAS-10, 13) (Flare Ø 12.7 for RAS-18)

Service port

2 - Ø11 x 14 Long holes (For Ø8- Ø10 anchor bolt)

Installation dimension

Air outlel

100 or more

600 or more

Air intlel

6 hole

11x14 hole

320

R5.5

108 125

137

600

320

9060090

275

290

550

436

R15

320

342

2 - R5-5 x 17L Ushape (For

8 - Ø10 anchor bolt)

FILE NO. SVM-15058

- 17 -

WIRING DIAGRAM

FILE NO. SVM-15058

- 18 -

6.SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

6-2. Outdoor Unit

No.

Fan motor (for indoor)

2 Room temp. sensor (TA-sensor)

10k

Ω

at 25°C

3 Heat exchanger temp. sensor (TC-sensor)

10kΩ at 25°C

Louver motor Output (Rated) 1W, 16 poles, DC12V

( - )

(

)

MP24Z4N

MF-340-30-3

DC250~370V, 30W

Parts n ame

Specif icatio nsType

Heat exchanger temp. sensor (TCJ-sensor)

10kΩ at 25°C

(

)

No. Parts name Model name Rating

1 Reactor CH-69-Z-T L = 19mH, 10A 2 Outdoor fan motor ICF-140-43-4R DC140V, 43W 3 (Inverter attached) 10kΩ (25°C) 4 (Inverter attached) 62kΩ (20°C) 5

Suction temp. sensor (TS sensor) Discharge temp. sensor (TD sensor) Outside air temp. sensor (TO sensor) (Inverter attached) 10kΩ (25°C)

6 Terminal block (5P)

JXO-5B

20A, AC250V

7 Compressor

(10,13k)

DA108X1C-23FZ 3-phases 4-poles 750W

(18k)

DA131S1B-31FZ

3-phases 4-poles 1100W

Coil for PMV

CAM-MD12TCTH-5

DC12V

FILE NO. SVM-15058

- 19 -

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram

RAS-10G2KCVP-T / RAS-10G2ACVP-T RAS-13G2KCVP-T / RAS-13G2ACVP-T

NOTE :

• The maximum pipe length of this air conditioner is 20m. When the pipe length exceeds 15m, the additional charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

Deoxidized copper pipe

Outer dia. : 9.52mm

Thickness : 0.8mm

NOTE :

Gas leak check position Refrigerant flow

Temp. measurement

INDOOR UNIT

Indoor heat

exchanger

Cross flow fan

Deoxidized copper pipe Outer dia. : 6.35mm Thickness : 0.8mm

Sectional shape of heat insulator

Allowable height

difference : 10m

Allowable pipe length

P Pressure measurement Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse Modulating valve at liquid side

Compressor DA108X1C-23FZ

Outdoor heat

exchanger

Propeller fan

Refrigerant amount : 1.10kg

OUTDOOR UNIT

Max. : 20m

Min. : 1m Chargeless : 15m

Charge : 20g/m (16 to 20m)

Muffler

Temp. measurement

Ø1.2 x 80s Ø1.2 x 80s

TO Split capillary

TCJ

FILE NO. SVM-15058

- 20 -

RAS-18G2KCVP-T / RAS-18G2ACVP-T

NOTE :

•

Deoxidized copper pipe Outer dia. : 12.7mm Thickness : 0.8mm

NOTE :

Gas leak check position Refrigerant flow

Temp. measurement

INDOOR UNIT

Indoor heat

exchanger

Cross flow fan

Deoxidized copper pipe Outer dia. : 6.35mm Thickness : 0.8mm

Sectional shape of heat insulator

Allowable height

difference : 10m

Allowable pipe length

P Pressure measurement Gauge attaching port

Vacuum pump connecting port

Strainer

Pulse Modulating valve at liquid side

Compressor

DA131S1B-31FZ

Outdoor heat

exchanger

Refrigerant amount : 1.40kg

Propeller fan

OUTDOOR UNIT

Max. : 20m

Min. : 3m Chargeless : 15m

Strainer

Charge : 20g/m (16 to 20m)

The maximum pipe length of this air conditioner is 20 m. When the pipe length exceeds 15m, the additional

charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)

Muffler

Accumulater tank

Muffler

FILE NO. SVM-15058

- 21 -

7-2. Operation Data

Temperature

condition (°C)

Model name

Standard pressure

P (MPa)

Heat

exchanger pipe temp.

Indoor fan mode

Outdoor fan mode

Compressor

revolution

(rps)

Indoor Outdoor T1 (°C)

27/19 35/-

RAS-10G2KCVP-T

0.9 to 1.1 14 to 17 High High

RAS-13G2KCVP-T

0.9 to 1.1 10 to 13 High High

RAS-18G2KCVP-T

0.9 to 1.1 10 to 13 High High

NOTES :

1. Measure surface temperature of heat exchanger pipe around center of heat exchaner path U bent. (Thermistor themometer)

2. Connecting piping condition 7.5 m

FILE NO. SVM-15058

- 22 -

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

M.C.U.

Indoor Unit Control Unit

Power Supply

Serial Signal Communication

(Operation Command and Information)

Serial Signal Transmitter/Receiver

Micro Switch

Converter

(D.C circuit)

Noise Filter

Indoor

Air purifier

unit

Louver

Motor

Louver Motor Drive Control

Indoor Fan

Motor Control

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Heat Exchanger Sensor (TC)

Room Temperature Sensor (TA)

Infrared Rays Signal Receiver

and Indication

Functions

· Cold draft preventing Function

· 3-minute Delay at Restart for Compressor

· Fan Motor Starting Control

· Processing

(Temperature Processing)

· Timer / Weekly Timer

· Serial Signal Communication

· Clean Function

· Power Selection

Indoor

Fan Motor

Heat Exchanger Sensor (TCJ)

Infrared Rays, 36.7kHz

Remote Controller

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

Operation Mode Selection

REMOTE CONTROLLER

ECO

Hi-POWER

COMFORT SLEEPPOWER-SEL

WEEKLY ON / OFF

Operation ( )

COMFORT SLEEP

PURE

FILE NO. SVM-15058

- 23 -

AUTO, COOL, DRY

Thermo. Setting

8-2. Outdoor Unit (Inverter Assembly)

OUTDOOR UNIT

For INDOOR UNIT

220 V ~50Hz

MCC5009 (P.C.B)

MICRO-COMPUTER BLOCK DIAGRAM

Compressor

Outdoor

Fan motor

Current

detect

Current

detect

Gate drive

circuit

M.C.U.

• PWM synthesis function

• Input current release control

• IGBT over-current detect control

• Outdoor fan control

• High power factor correction control

• Inverter output frequency control

• A/D converter function

• PMV control

• Discharge temp. control

• Signal communication to indoor unit

Gate drive

circuit

Inverter

(DC AC)

Inverter

(DC AC)

Converter

(AC DC)

PMV : Pulse Motor Valve

M.C.U. : Micro Control Unit

Clock

frequency

4MHz

Driver circuit

of PMV

PMV

High Power

factor Correction

circuit

Input current

sensor

Indoor unit

send/receive

circuit

Noise

Filter

Discharge

temp. sensor

Outdoor air

temp. sensor

Suction

temp. sensor

FILE NO. SVM-15058

- 24 -

  

9. OPERATION DESCRIPTION

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air conditioner, which uses AC or DC motor for the indoor for motor and the outdoor fan motor. And the capacityproportional control compressor which can change the motor speed in the range from 11 to 96 rps is mounted. The DC motor drive circuit is mounted to the indoor unit. The compressor and the inverter to control fan motor are mounted to the outdoor unit.

The entire air conditioner is mainly controlled by the indoor unit controller.

The indoor unit controller drives the indoor fan motor based upon command sent from the remote controller, and transfers the operation command to the outdoor unit controller.

The outdoor unit controller receives operation command from the indoor unit side, and controls the outdoor fan and the pulse Modulating valve. (P.M.V) Besides, detecting revolution position of the compressor motor, the outdoor unit controller controls speed of the compressor motor by controlling output voltage of the inverter and switching timing of the supply power (current transfer timing) so that motors drive according to the operation command. And then, the outdoor unit controller transfers reversely the operating status information of the outdoor unit to control the indoor unit controller.

As the compressor adopts four-pole brushless DC motor, the frequency of the supply power from inverter to compressor is two-times cycles of the actual number of revolution.

1. Role of indoor unit controller

The indoor unit controller judges the operation commands from the remote controller and assumes the following functions.

• Judgment of suction air temperature of the indoor heat exchanger by using the indoor temp. sensor. (TA sensor)

• Judgment of the indoor heat exchanger temperature by using heat exchanger sensor (TC sensor) (Prevent-freezing control, etc.)

• Louver motor control

• Indoor fan motor operation control

• LED (Light Emitting Diode) display control

• Transferring of operation command signal (Serial signal) to the outdoor unit

• Reception of information of operation status (Serial signal including outside temp. data) to the outdoor unit and judgment/display of error

• Air purifier operation control

2. Role of outdoor unit controller

Receiving the operation command signal (Serial signal) from the indoor unit controller, the outdoor unit performs its role.

• Compressor operation control

• Operation control of outdoor fan motor

• P.M.V. control

• 4-way valve control

Operations followed to judgment of serial signal from indoor side.

• Detection of inverter input current and current release operation

• Over-current detection and prevention operation to IGBT module (Compressor stop function)

• Compressor and outdoor fan stop function when serial signal is off (when the serial signal does not reach the board assembly of outdoor control by trouble of the signal system)

• Transferring of operation information (Serial signal) from outdoor unit controller to indoor unit controller

• Detection of outdoor temperature and operation revolution control

3. Contents of operation command signal (Serial signal) from indoor unit controller to outdoor unit controller

The following three types of signals are sent from the indoor unit controller.

• Operation mode set on the remote controller

• Compressor revolution command signal defined

by indoor temperature and set temperature (Correction along with variation of room temperature and correction of indoor heat exchanger temperature are added.)

• Temperature of indoor heat exchanger

• For these signals ([Operation mode] and [Com-

pressor revolution] indoor heat exchanger temperature), the outdoor unit controller monitors the input current to the inverter, and performs the followed operation within the range that current does not exceed the allowable value.

4. Contents of operation command signal (Serial signal) from outdoor unit controller to indoor unit controller

The following signals are sent from the outdoor unit controller.

• The current operation mode

• The current compressor revolution

• Outdoor temperature

• Existence of protective circuit operation

For transferring of these signals, the indoor unit controller monitors the contents of signals, and judges existence of trouble occurrence.

Contents of judgment are described below.

• Whether distinction of the current operation status meets to the operation command signal

• Whether protective circuit operates When no signal is received from the outdoor

unit controller, it is assumed as a trouble.

FILE NO. SVM-15058

- 25 -

9-2. Operation Description

1. Basic operation ........................................................................................................... 26

1. Operation control ................................................................................................... 26

Cooling operation .................................................................................................. 27

3. AUTO operation .....................................................................................................

4. DRY operation........................................................................................................ 28

2. Indoor fan motor control ............................................................................................. 29

3. Outdoor fan motor control........................................................................................... 31

4. Capacity control .......................................................................................................... 32

5. Current release control ............................................................................................... 32

6. Release protective control by temperature of indoor heat exchanger........................ 33

Louver control ............................................................................................................. 36

1) Louver position....................................................................................................... 36

2) Air direction adjustment ......................................................................................... 34

3) Swing ..................................................................................................................... 34

ECO operation ............................................................................................................ 39

10.

Temporary operation................................................................................................... 40

11.

Plasma

ionizer purifier control [Detection of abno

rmality] ......................................... 40

12.

Discharge temperature control ................................................................................... 41

14.

Pulse Modulating valve (P.M.V.) control ..................................................................... 42

15.

Self-Cleaning function ................................................................................................ 43

16.

Remote-A or B selection ............................................................................................ 44

9-3. Auto Restart Function ..

9-3-1. How to Set the A uto Restart Function .............................. ........................................ 50

9-3-2. How to Cancel the Au to Restar t Function ................................................................ 51

9-3-3. Power Failure During Timer Operation ................................................................... 51

21.

POWER

selection mode

....................................................................................47

9-4. Remote Controller and Its Fuctions

9-4-1. Parts Name of Remote Contr oller .............................................................................. 52

9-4-2. Operation of remote control ...................................................................................... 52

17.

QUIET mode ............................................................................................................. 45

18.

COMFORT SLEEP mode ......................................................................................... 45

19.

Short Timer ................................................................................................................ 45

20.

Hi-POWER Mode ..................................................................................................... 46

9-4-3. Name and Functions of Indications on Remote Contr oller ........................................ 61

Outdoor Quiet Control

.........................................................................................47

CU Display lamp rightness control .....................................................................48

13.

FILE NO. SVM-15058

- 26 -

Item

1. Basic operation

Operation flow and applicable data, etc.

1. Operation control

Description

Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are

controlled.

1) The operation conditions are selected by the remote controller as shown in the below.

2) A signal is sent by ON button of the remote controller.

The

signal is received by a sensor of the indoor unit and processed by the indoor controllers as

shown

in the below. The power relay is tumed ON and power supply to the outdoor unit.

4) The indoor controller controls the indoor fan motor and louver motor.

5) The indoor controller sends the operation command to the outdoor controller, and sends/receives the control status with a serial signal.

The

outdoor controller controls the operation as shown in the below, and also controls the

compressor, outdoor fan motor, pulse Modulating valve are controlled.

Remote controller

Control contents of remote controller

• ON/OFF (Air condi

tioner/Air purifier)

• Operation select (COOL/AUTO/DRY)

• Temperature

setup

• Air

direction

• Swing

•

Air

volume select (AUTO/QUIET/LOW/LOW+/MED/MED+/HIGH)

•

ECO

• ON

timer setup

• OFF

timer setup

• Hi-POWER

Selection of

operation

conditions

ON/OFF

•

COMFORT

SLEEP

•

QUIET

•

PRESET

•

ONE-TOUCH

•

POWER-SELECTION

〜

Indoor unit control

Operation command

Power relay

signal Serial

transmission

signalSerial

Inverter

Transmission

Signal

receiving

Outdoor unit

Indoor unit control

• Command signal generating function for indoor unit operation

• Calculation function (temperature calculation)

• 3 minute delay function for compressor reactivation

• Activation compensation function for indoor fan

• Cold draft preventive function

•

Timer

function

• Indoor heat exchanger release control

Outdoor unit control

• Inverter output frequency control

• Waveform composite function

•

Calculation

function

(temperature calculation)

• AD conversion function

• Compressor reactivation delay function

• Current release function

• GTr overload protective function

• Outdoor temperature estimation

• Indoor fan motor

• Louver motor

Compressor•

• Outdoor fan motor

•

Pulse modulating valve

door unit

•

A/B

Selection

function

•

Contront

air

flow

(wide

angle/Right

wide/Left

wide/spot

front/spot right/spot

lift)

FILE NO. SVM-15058

- 27 -

Item

1. Basic operation

Operation flow and applicable data, etc.

Description

Cooling/Heating operation

The operations are performed in the following parts by controls acc

ording to cooling conditions.

Receiving the operation ON signal of the remote controller, the cooling operation signal starts being transferred form the indoor controller to the outdoor unit.

2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan motor control” and the louver according to the contents of “9. Louver control”, respectively.

3) The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and according to the operation signal sent from the indoor unit.

Remote control

settings

Operation ON

Indoor unit control

Operation command

signal transmission

Outdoor unit control

Power relay ON

Indoor fan motor

revolution control

Compressor revolution control Outdoor fan motor revolution control Pulse modulating valve control

FILE NO. SVM-15058

- 28 -

Item

1. Basic operation

Operation flow and applicable data, etc.

Description

4. DRY operation

DRY operation is performed according to the difference between room temperature and the setup temperature as shown below.

In DRY operation, fan speed is controlled in order to prevent lowering of the room temperature and to avoid air flow from blowing directly to persons.

1) Detects the room temperature (Ta) when the DRY operation started.

2) Starts operation under conditions in the left figure according to the temperature difference between the room temperature and the setup temperature (Tsc). Setup temperature (Tsc) = Set temperature on remote controller

(Ts) + (0.0 to 1.0)

3) When the room temperature is lower 1°C or less than the setup temperature, turn off the compressor.

Tsc

0.5

1.0

[°C]

Fan speed

L– (W5)

(W5+W3) / 2

SUL (W3)

3. AUTO operation

Selection of operation mode As shown in the following figure, the operation starts by selecting automatically the status of room temperature (Ta) when starting AUTO operation.

*1. When reselecting the operation mode, the fan

speed is controlled by the previous operation mode.

Detects the room temperature (Ta) when the operation started.

2) Selects an operation mode from Ta in the left figure.

3) Fan operation continues until an operation mode is selected.

Ts + 1

Cooling operation

Monitoring (Fan)

In AUTO mode, when room temperature reach set temperature commpressor will stop.

FILE NO. SVM-15058

- 29 -

Item

2. Indoor fan motor control

Operation flow and applicable data, etc.

(This operation controls the fan speed at indoor unit side.) The indoor fan

(cross flow fan) is operated by the phasecontrol induction motor. The fan rotates in 5 stages in MANUAL mode, and in 5 stages in AUTO mode, respectively. (Table 1)

Description

* Symbols

UH : Ultra High H : High M+ : Medium+ M : Medium L+ : Low+ L: Low L- : Low– UL :

Ultra Low

SUL : Super Ultra Low

* The values of fan speed and air flow

volume indicate on the table are measured when the louver is inclined downward. Fan speed and air flow volume broadly vary with position

(Fig. 1)

(Fig. 2)

+2.5

[°C]

+2.0

+1.5

+1.0

+0.5

Tsc

M+(WC)

L(W7)

Air volume AUTO

L L+ M M+ H

(L + M) / 2

(M + H) / 2

Indication

Fan speed

Fan speed setup

COOL ON

AUTO

MANUAL

*3 : Fan speed = (M + –L) x 3/4 + L

*4 : Fan speed = (M + –L) x 2/4 + L

*5 : Fan speed = (M + –L) x 1/4 + L

(Linear approximation from M+ and L)

(Table 1) Indoor fan air flow rate

Quiet

of louver.

1) When setting the fan speed to L, L+, M, M+,H or Quiet on the remote controller, the operation is performed with the constant speed shown in Fig. 1.

2) When setting the fan speed to AUTO on the remote controller, revolution of the fan motor is controlled to the fan speed level shown in Fig. 2 and Table 1 according to the setup temperature, room temperature, and heat exchanger temperature.

RAS-10G2KCVP-T RAS-13G2KCVP-T RAS-18G2KCVP-T

Cooling Cooling Cooling

Fan speed Air Flow rate Fan speed Air Flow rate Fan speed Air Flow rate

(rpm)

(m3/h)

(rpm)

(m3/h)

(rpm)

(m3/h)

UH/H

1060 661 1100 690 1120 713

1060 661 1100 698 1120 713

H UH

1040 647 1080 676 1120 713

M+ M+ H

900 527 930 551 960 576

M+

900 527 930 551 950 567

M M/L+ M

760 409 780 423 800 442 W9 760 409 780 423 800 442 W8

L+ L+

690 349 710 368 730 384 W7

L L

600 274 640 305 660 322 W6

L- L

520 205 560 243 580 255 W5

UL L- L-

500 187 540 224 560 243 W4

480 173 520 205 540 224 W3

SUL UL

SUL/SL-

460 155 500 187 520 205 W2

450 147 480 173 500 187 W1

SL-

440 142 440 142 440 142

Fan speed

Cool PAP Dry

Level

FILE NO. SVM-15058

- 30 -

3..Outdoor fan motor control

The speed of the outdoor unit side is controlled according to speed of compressor motor (rps) and outdoor temperature (To).

1 The operation command sent

from the remote controller is processed by the indoor unit controller and transferred to the controller of the outdoor unit.

2 When strong wind blows at outdoor side, the operation of

air conditioner continues with

the fan motor stopped.

3 Whether the fan is locked or

not is detected, and the operation of air conditioner

stops and an alarm is displayed if the fan is locked.

4 According to each operation

mode, by the conditions of outdoor temperature (To) and compressor revolution, the speed of the outdoor fan shown in the table is selected.

Air conditioner ON

(Remote controller)

Indoor unit controller

1)) Outdoor un operation command (Outdoor fan control)

2)) Fan spee ≥ 400

when the motor stopped.

YES

OFF status of

fan motor continues.

Fan motor ON

) Fan lo3)

Air conditioner

OFF

Alarm

display

4)) Motor operates as shown in the table belo

In cooling operation

Compressor speed (rps)

< 22.1 < 50.3 50.3 ≤

MIN MAX MIN MAX MIN MAX

To > 38 f 6 f 9 f 8 f B f A f E To > 28 f 5 f 9 f 7 f B f 9 f E To > 15 f 3 f 7 f 5 f 9 f 7 f B

To > 5 f 1 f 3 f 1 f 7 f 3 f 9 To > 0.5 f 1 f 3 f 1 f 5 f 3 f 7 To > 0.5 f 0 f 1 f 0 f 3 f 1 f 4

During ECO,

QUIET and

comfort sleep

To > 38 f 6 f 9 f 8 f B f A f B To > 28 f 5 f 9 f 7 f B f 9 f B To > 15 f 3 f 7 f 5 f 9 f 7 f B

To > 5 f 1 f 3 f 1 f 7 f 3 f 9 To > 0.5 f 1 f 3 f 1 f 5 f 3 f 7 To > 0.5 f 0 f 1 f 0 f 3 f 1 f 4

When To is abnormal f 1 f F f 1 f F f 1 f F

Outdoor fan speed (rpm)

Tap 10K 13K 18K Tap 10K 13K 18K

f 0 0 0 0 f 9 600 650 640 f 1 200 200 230 f A 600 700 670 f 2 300 300 300 f B 650 700 700 f 3 370 370 350 f C 700 800

800

f 4 440 440 410 f D 700 850

800

f 5 440 440 480 f E 700 850

800

f 6 500 500 500 f F 700 850

850 f 7 550 550 530 f 8 600 600 560

Item Operation flow and applicable data, etc.

Description

FILE NO. SVM-15058

- 31 -

4..Capacity control

The cooling capacity depending on the load is adjusted. According to difference between the set up value of temperature and the room temperature, the capacity is adjusted by the compressor revolution.

1 The difference between set

temperature on remote controller (Ts) and room temperature (Ta) is calculated.

2 According to the temperature

difference, the correction value of Hz signal which determines the compressor speed is set up.

3 The rotating position and speed

of the motor are detected by the electromotive force occurred on the motor winding with operation of the compressor.

4 According to the difference resulted

from comparison of the correction value of Hz signal with the present operation Hz, the inverter output and the commutation timing are varied.

5 Change the compressor motor

speed by outputting power to the compressor.

* The contents of control operation are

same in cooling operation.

5.. Curre release control

This function prevents troubles on the electronic parts of the compressor driving inverter. This function also controls drive circuit of the compressor speed so that electric power of the compressor drive circuit does not exceed the speciﬁ ed value.

1 The input current of the outdoor unit

is detected in the inverter section of the outdoor unit.

2 According to the detected outdoor

temperature, the speciﬁ ed value of the current is selected.

3 Whether the current value exceeds

the speciﬁ ed value or not is judged.

4 If the current value exceeds the

speciﬁ ed value, this function reduces the compressor speed and controls speed up to the closest one commanded from the indoor unit within the range which does not exceed the speciﬁ ed value.

Remote controller

Indoor unit

Set temp. (Ts)

Ts –Ta

Room temp. (Ta)

Correction of Hz signal

Detection of electromotive force

of compressor motor winding

Detection of motor speed and rotor position

Correction value of Hz signal ≤ Operating Hz

Inverter output change

Commutation timing change

Change of compressor speed

45°C 40°C 44°C 16°C 39°C 11°C 15.5°C

10.5°C

Outdoor unit inverter main

circuit control current

Outdoor temp. To

Setup of current release point

Operating current ≤ Setup value

High

Low

Reduce compressor speed

Current decrease

Capacity control continues.

Outdoor temp.

Cooling current release value

10K

4.27A 4.27A 4.88A

5.40A 5.40A 6.15A

6.07A 6.07A 8.02A

13K

18K

Item Operation flow and applicable data, etc.

Description

FILE NO. SVM-15058

- 32 -

6. Low temperature release protective control by temperature of indoor heat exchanger

(Prevent-freezing control for indoor heat exchanger) In cooling/dry operation, the sensor of indoor heat exchanger detects evaporation temperature and controls the compressor speed so that temperature of the heat exchanger does not exceed the speciﬁ ed value.

1 When temperature of the

exchanger drops below 5°C, the compressor speed is reduced. (P zone)

2 When temperature of the indoor heat exchanger rises

exchanger rises in the range from 6°C to under 7°C, the compressor speed is kept. (Q zone)

3 When temperature of the indoor heat exchanger rises

to 7°C or higher, the capacity control operation returns to the usual control in cooling operation. (R zone)

7˚C

6˚C

5˚C

Usual cooling capacity control

Reduction of compressor speed

Indoor heat exchanger temperature

When the value is in Q zone, the compressor speed is kept.

Item Operation flow and applicable data, etc. Description

FILE NO. SVM-15058

- 33 -

Item

Louver control

1) Louver position

Operation flow and applicable data, etc.

This function controls the air direction of the indoor unit.

Description

• The position is automatically controlled according to the oper ation

• The set louver position is stored in memory by the microcomputer,

The angle of the louver is indicated as the louver closes fully is 0°.

mode (COOL/HEAT).

and the louver returns to the stored position when the next operation is performed. (Cooling/Heating memory position)

1) Louver position in cooling operation

Manual and automatic operation HI-POWER operation

Initial setting is directs downward (13.4°) Default setting is directs downward (26.1°)

Wide air direction

Wide position is directs downward (13.4°)

Wide-angle Right wide Left wide

Left side lover setting is left facing (45.9°) Right side lover setting is right facing (45.9°)

Left side lover setting is front facing (0°) Right side lover setting is right facing (45.9°)

Left side lover setting is left facing (45.9°) Right side lover setting is front facing (0°)

Spot air direction

Spot position is directs downward (43.1°)

Wide front Sport right Spot left

Left side lover setting is front facing (0°) Right side lover setting is front facing (0°)

Left side lover setting is right facing (45.9°) Right side lover setting is right facing (45.9°)

Left side lover setting is left facing (45.9°) Right side lover setting is left facing (45.9°)

FILE NO. SVM-15058

- 34 -

Item

Louver control

Operation flow and applicable data, etc. Description

2) Louver position in heating operation

Manual and automatic operation HI-POWER operation

Initial setting is directs downward (43.1°) Default setting is directs downward (26.1°)

Wide air direction

Wide position is directs downward (43.1°)

Wide-angle Right wide Left wide

Left side lover setting is left facing (45.9°) Right side lover setting is right facing (45.9°)

Left side lover setting is front facing (0°) Right side lover setting is right facing (45.9°)

Left side lover setting is left facing (45.9°) Right side lover setting is front facing (0°)

Spot air direction

Spot position is directs downward (43.1°)

Wide front Sport right Spot left

Left side lover setting is front facing (0°) Right side lover setting is front facing (0°)

Left side lover setting is right facing (45.9°) Right side lover setting is right facing (45.9°)

Left side lover setting is left facing (45.9°) Right side lover setting is left facing (45.9°)

FILE NO. SVM-15058

- 35 -

Item

Louver control

Operation flow and applicable data, etc. Description

Wind direction adjustment

•

The Up-Down louver position can be arbitrarily set up by pressing [FIX ] button.

• Swing operation is perfor in range 35° with the Fixed position as the center.

• If the swing range exceeded either upper or lower limit position, swing operation is perfomed in range 35° from the limit.

3) Swing

•

Fixed Position before start swing

Upper Limit Position.

Lower Limit Position

Swing range 35

Swing When pressing [SWING] button during operation, the louver starts swinging.

Upper Limit Position.

Lower Limit Position.

Fixed Position before start swing.

17.5

Swing range 35

Horizotal blowing Inclined blowing

Inclined blowing Blowing downward

Front blowing Left blowing

Right blowing Front blowing

•

The

Left-Right louver position can be arbitrarily set

up by

pressing [FIX ] button.

•

Up-Down and Left-Right louver are same setting.

FILE NO. SVM-15058

- 36 -

Item

8. ECO operation

Operation flow and applicable data, etc.

When pressing [ECO] button on the remote controller, a Economic operation is performed.

This function operates the air conditioner with the difference between the set and the room temperature as shown in the following figure.

Description

1) The control target temperature increase 0.5ºC per hour up to 2ºC starting from the set temperature

when ECONO has been received.

2) The indoor fan speed is depend on presetting and can change every speed after setting ECO

operation.

3) The compressor speed is controlled as shown in the left figure.

* 12 (DRY max - COOL min) /6 x 5 + COOL min * 11 (DRY max - COOL min) /6 x 4 + COOL min * 10 (DRY max - COOL min) /6 x 3 + COOL min

*9 (DRY max - COOL min) /6 x 2 + COOL min * 8 (DRY max - COOL min) /6 x 1 + COOL min

°C

during the ECO operation.

3.5

3.0

2.5

1.5

1.0

TSC

-1.0

-2.0

5.5

1H 2H

11 10

7 6

4 3

OFF

Dry Max

*12 *11

*10

6.0

6.5

5.0

4.5

4.0

2.0

0.5

-0.5

9 8

Time

Zone

Frequency

FAN

Min Hz

The indoor fan speed is not controlled and can be selected

(Room temp. – Set temp.)

10G2KCVP-T 13G2KCVP-T

18G2KCVP-T

Cool min 10 9 9 DRY max 30 30 30

FILE NO. SVM-15058

- 37 -

Item

Operation flow and applicable data, etc.

Description

10.

Plasma

ionizer purifier control

This function generates nagative ion while cleaning the air in the room. If plasma ionizer purifier-ON signal is received while the air conditioner stops, the plasma ionizer

purifier starts operation, and if it is received while the air conditioner operates, the air conditioner and the plasma ionizer purifier start operation.

When the previous operation was the operation of air conditioner + plasma ionizer purifier, an operation of air conditioner + plasma ionizer purifier starts by

pushing AC button on the remote controller. (Operation of air conditioner + plasma ionizer purifier is stored in memory.)

*1 Swing is available *2 Fan speed is Fan Auto mode varies in

order, (M + 1) → (L) → (L–) → (SL).

Sending plasma ionizer-ON

Operation lamp ON

Fan ON

Plasma ionizer purifier ON

Plasma ionizer purifier operation

Start of plasma ionizer purifier-ON

Operation lamp OFF Filter-OFF

Memory position of

louver/COOL

Air conditioner + Plasma

ionizer purifier operate

Fan stop

Plasma ionizer purifier-OFF

Louver close

All stop

Air conditioner operates

Sending plasma ionizer purifier-OFF

1,2

Air conditioner operates

Air conditioner stops

Plasma ionizer purifier

operates

Air conditioner +

Plasma ionizer purifier

operate

Present status

Stop

Plasma ionizer purifier only

Air conditioner

Joint use of AC and plasma ionizer purifier

Operation button

PURE button Air conditioner

Plasma ionizer purifier

AC operation*

Stop (All)

AC + Plasma ionizer purifier

All stop

AC operation All stop

Plasma ionizer purifier operation

AC + Plasma ionizer purifie operation

Louver*1

Cooling position

Follows to AC operation

Fan speed *2

AUTO, L, L+, M, M+, H

Follows to AC operation

9..

Temporary

operation

Pressing [RESET] button starts the temporary operation of [AUTO] operation. When keeping [RESET] button pressed for 10 seconds or more, the temporary [COOL] operation is performed.

1 When pressing [RESET] button, the

temporary [AUTO] operation starts.

2 When keeping [RESET] button

pressed for 3 seconds or more, Pi, Pi, Pi sound is heard and [AUTO RESTART] control is changed.

3 When keeping [RESET] button

pressed for 10 seconds or more, “Pi” sound is heard and the temporary [COOL] operation starts.

4 To stop the temporary operation, press

the button again.

Filter lamp ON

YES

Press RESET button.

Did you press [RESET] button

for 3 seconds or more?

Temporary [AUTO] operation

Did you press [RESET] button

for 10 seconds or more?

Switch to [AUTO RESTART] Control

YES

Did you press [RESET] button

for 20 seconds or more?

Quiet Setting

Temporary [COOL] Operation

FILE NO. SVM-15058

- 38 -

Item Operation flow and applicable data, etc. Description

1. Purpose

The air purifying control function is to alert the user to trouble in the ionizing or plasma ionixer purifier operation.

2. Description

Trouble is determined to have occurred (indicated by the plasma ionizer purifier lamp indicator) in the following two cases.

1) When the panel switch has been set to OFF by the opening of the air inlet grile, etc.

2) When an abnormal discharge caused by a symptom such as the build-up of dirt has been detected while the air purifier is ON

Trouble case are deemed to have occurred when the action concerned continues for more than one second.

3. Operation

The sequence that plasma ionizer purifier lamp indicator is turned on are described in the left flowchart.

1) A trouble detected within 1 minute after activation of the air is immedi-ately judged as an error and the plasma ionizer purifier lamp indicator goes on.

2) In case that 1 minute passed after activation of the plasma ionizer purifier, it is turned off while the PURE indicator keeps ON. After 10 minutes passed, restart the plasma ionizer purifier and an error is judged again.

11. Discharge temperature control

When the breaker is turned [ON] (In restart time after power failure) or RESET button is pressed the air purifier is not turned on until the integrated operation time of the indoor fan exceeds 1 hour after operation start (It is nor the Plasma ionizer purifier operation time). It is the safety measures considering an incomplete drain when electric dust collector has been cleaned with water.

1. Purpose

This function detects error on the refrigerating cycle or error on the compressor, and performs protective control.

2. Operation

Control of the compressor speed The speed control is performed as described in the left table based upon the discharge temperature.

Td value

117°C 112°C 108°C 105°C

98°C

Control operation

Judges as an error and stops the compressor. Reduce the compressor speed. Reduce slowly compressor speed. Keeps the compressor speed. If the operation is performed with lower speed than one

commanded by the serial signal, speed is slowly raised up to the commanded speed.

Operates with speed commanded by the serial signal.

10. Plasma ionizer purifier control [Detection of abnormality]

Plasma ionizer purifier

lamp brink

Plasma ionizer purifier operation

Plasma ionizer purifier power ON

Error input

Plasma ionizer purifier

power ON 1 minute or

less

Plasma ionizer purifier

power OFF

Reset

Plasma ionizer purifier

power OFF

Error input 5 times

Plasma ionizer purifier

power ON after 10

minutes from the error

input.

Plasma ionizer purifier

power OFF

Plasma ionizer purifier

lamp

Reset by RESET button or by the stop direction from the remote controller.

FILE NO. SVM-15058

- 39 -

Item Operation flow and applicable data, etc.

Description

12.

Pulse Modulating valve (P.M.V.)

This function controls throttle amount of the refrigerant in the refrigerating cycle.

According to operating status of the air conditioner, this function also controls the open degree of valve with an expansion valve with pulse Modulation.

1) When starting the operation, move the valve once until it fits to the stopper. (Initialize)

* In this time, “Click” sound may be

heard.

2) Adjust the open degree of valve by super heat amount. (SH control)

3) If the discharge temperature was excessively up, adjust the open degree of valve so that it is in the range of set temperature. (Discharge temp. control)

* SH (Super Heat amount) =

Ts (Temperature of suction pipe of the compressor) – Tc or Te (Heat exchanger temperature at evaporation side)

* PMV: Pulse Modulating Valve

Starting up

Initialize

Move to

initial position

PMV open degree control

SH control

Td, high pressure

release control

Turn OFF by

remote controller

Compressor Stop by

"Room Temperature

Compressor ON

Defrosting

operation

Control"

Move to "Stop

Position" (Setup

from factory)

Move to "Defrost

Position" (Setup

from factory)

control

When operation is OFF by the remote controller or when compressor is OFF by room temperature control, the open degree of valve is adjusted to the stop position.

FILE NO. SVM-15058

- 40 -

Item

13. Self-Cleaning

Operation flow and applicable data, etc.

1. Purpose

The Self-Cleaning operation is to minimize the growth of mold, bacteria etc. by running the fan and drying so as to keep the inside of the air conditioner clean.

Self-Cleaning operation

When the cooling or dry operation shuts down, the unit automatically starts the SelfCleaning operation which is then performed for the specified period based on duration of the operation which was performed prior to the shutdown, after which the Self-Cleaning operation stops. (The Self-Cleaning operation is not performed after a heating operation.)

2. Operation

1) When the stop signal from the remote

controller or timer-off function is received, only the timer indicator light.

2) The period of the Self-Cleaning operation

is determined by the duration of the operation performed prior to the reception of the stop code.

3) After the Self-Cleaning operation has

been performed for the specified period, the unit stops operating.

Unit now performing cooling or dry operation

Press “STOP” button

Only timer indicator lights, and Self Cleaning operation starts

Time set now elapses

Operation stops

function

• During Self-Cleaning operations: The louver opens slightly. The indoor fan operates continuously at a speed of 500 rpm.

Cooling: Auto (cooling) Dry

Auto (fan only)

Shutdown

Operation time

Up to 10 minutes

No Self-Cleaning operation

performed (0 minutes)

10 minutes

30 mins.

or longer

No Self-Cleaning operation per

formed

• To stop an ongoing Self-Cleaning operation at any time Press the start/stop button on the remote controller twice during the Self-Cleaning operation. (After pressing the button for the first time, press it for the

Self-Cleaning operation times

second time without delay (within 10 minutes).)

Description

Self-Cleaning operation time

FILE NO. SVM-15058

- 41 -

Item

13.

Self-Cleaning function

Operation flow and applicable data, etc.

13-1-1. Self-Cleaning diagram

Description

Operation display ON OFF OFF

FCU fan

ON ON

OFF

rpm is depend on presetting. (500RPM)

FCU louver OPEN OPEN (12.7º) CLOSE

Timer display

ON or OFF

depend on presetting of timer function. depend on presetting of timer function.

Compressor

ON or OFF

OFF OFF

depend on presetting per room temperature.

CDU fan ON or OFF

OFF OFF

depend on presetting per room temperature.

Cool mode or dry mode

operation more than 10 mins.

Self-Cleaning mode

operate 30 mins.

Automatically turn-off.

Operation time

Turn off by remote controller or

timer-off function.

How to set/cancel Self-Cleaning function

To set/cancel the Self-Cleaning function, proceed as follows:

13-1-2. Self-Cleaning function release

Operation LED

Self-cleaning

flash 1 Hz

•

function

Timer LED

Flash 1 Hz

OFF

flash 1 Hz

not flash

OFF

•

Setting diagnosis code "06" on remote controlle

(See detail of setting diagnosis code in 11-4-1)

Take the remote controller to direction of LED display on air conditioner, press button up ( ) at ON of the remote controller (Fig. 13-1-2) 1 time to send the code "07" (within 3 sec. after press [RESET] buton), then air conditioner will shutdown automatically. Also, LED display will show flash follow the able below.

• Turn on air conditioner again by remote controller

to confirm setting.

• Turn on the power supply to air conditioner,

after that press [RESET] button on air conditioner 1 time to turn on the air conditioner (The LED display will show in operation LED) (Fig. 13-1-1)

•

Note) Table above will show current status of

Self-Cleaning function

Set or Cancel Self-Cleaning function by push the RESET button on air conditioner. When setting is changed, the sound warning will alarm "Beep". The setting is changed following below.

Fig. 13-1-1

Fig. 13-1-2

Temporary switch

FILE NO. SVM-15058

- 42 -

Item

15.

QUIET mode

Operation flow and applicable data, etc.

Description

When the [QUIET] selected form [Fan] button, the fan of the indoor unit will be restricted the revolving

Remarks :

1. Quiet mode is unable to work in dry mode.

Quiet mode is the system which, control the revolving speed of indoor fan to work constantly at lower than speed L. In addition, noise level of indoor unit is less than usual.

speed at speed UL until the [Fan] button is selected

other speed (cancel Quiet mode).

16. COMFORT

The principles of comfort sleep mode are:

• Quietness for more comfortable. When

• Save energy by changing room temperature

• The air condition can shut down by itself

Remarks:

1. Comfort sleep mode will not operate in dry

automatically.

mode and fan only mode.

automatically.

room temperature reach setting temperature

Cooling mode

• The preset temperature will increase as

show on ECO operation (Item No. 9)

• Press the [COMFORT SLEEP] button to

choose the operating hours. Repeat pressing to select the hours.

• If the [COMFORT SLEEP] button is pressed

again means cancel comfort sleep mode.

(1hr, 3hr, 5hr or 9hr)

Quiet mode is appropriate to work with less cooling load condition. Because of the fan speed may not enough the cooling capacity.

SLEEP

14.

Remote-A or B

selection

1. Purpose

This operation is to operate only one indoor unit using one remote controller.

2. Description

When operating one indoor unit in a situation where two indoor units have been installed in the same room or nearby rooms, this operation prevents the remote controller signal from being received simultaneously by both units, thus preventing both units from operating.

3. Operation

The indoor unit on which the remote controller selection has been set to B receives the signal of the remote controller also set to B. (At the factory the remote controller selection is set to A on all the indoor units. There is no A setting display.)

Setting the remote controller

To separate using of remote control for each indoor unit in case of 2 air conditioner are installed nearly.

Remote Control B Setup.

1) Press RESET button on the indoor unit to turn

2) Point the remote control at the indoor unit.

3) Push and hold CHK • button on the Remote

the air conditioner ON.

Control by the tip of the pencil. "00" will be shown shown on the display.

4) Press MODE • during pushing CHK • . "B" will

show on the display and "00" will disappear and the air conditioner will turn OFF. The Remote

Control B is memorized.

Note : 1. Repeat above step to reset Remote Control

to be A.

2. Remote Control A has not "A" display.

3. Default setting of Remote Control from factory is A.

"00" display

"B" display

FILE NO. SVM-15058

- 43 -

Item

Operation flow and applicable data, etc.

Description

18.

Hi-POWER

([Hi-POWER] button on the remote controller

is pressed)

When [Hi-POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi-

Mode

POWER mark is indicated on the display of the remote controller and the unit operates as follows.

1. Automatic operation

• The indoor unit operates in according to the current operation.

2. Cooling operation

remote controller does not change.) The indoor unit's fan speed level increase 1 tap

•

The preset temperature drops 1ºC

(The value of the preset temperature on the

4. The Hi-POWER mode can not be set in Dry operation

∗ The Hi-POWER operation will be cancelled

when press [Hi-POWER] button again.

17.

Short Timer

In the normal condition, after switching one circuit breaker, 3-minute delay time for compressor and 1 hour for plasma air purifier are set for the maintenance of the unit.

Purpose

To start the unit immediately for the purpose of testing, trial...etc, short timer can be used. maintenance of the unit.

Short Timer Setting

purifier on the remote control without

[CHK] button and hold, "00" will show

on display, them press [SET] button to make "00" disappear.

Press [ ] button to turn the unit OFF.

k Set the operation mode or plasma air

sending the signal to the unit.

l Use the tip of the pencil to push the

Press [ ] button to turn the unit ON.

n When short timer is activated, all

setting on the remote operates

immediately, besides, all indicatiors on

front panel turns ON continuously for

3 seconds.

PRESET

TEMP.

FILE NO. SVM-15058

- 44 -

Item

Operation flow and applicable data,etc

Description

19.

POWER

Mode

Selection

([POWER-SEL] button on the remote controller is pressed)

The function is used when its circuit breaker is shared with other electrical appliances. It limits the maximum current/ power consumption to 100%, 75% or 50%. The lower the percentage, the higher the saving and also the longer the compressor lifetime.

When the level is selected, Power-SEL

level flashes on LCD display for 3 seconds. In case of 75% and 50% level, number "75" or "50" also flashes for 2 seconds.

Note :

Due to the reason that POWER

SELECT FUNCTION limits the

maximum current, inadequate capacity may occur.

− Power Selection 50% is 50% of rate maximum

− Power Selection 75% is 75% of maximum

current.

20.

Outdoor

control

Quiet

1. Purpose

For the users who concern about noise of the outdoor unit, this control controls the max. revolutions of the compressor to reduce the noise.

2. Description

To reduce noise, [RESET] button of the indoor unit is kept pushed for 20 seconds. The number of revolution for the indoor fan motor and the seup temp value are kept as they are.

3. Operation

As shown in the table, the maximum revolution number of indoor unit compressor can be reduced. As the maximum number of revolution of the compressor is restricted, the rise-

up performance at the start time is

weakened.

Select "Conrol" or "No conrol" by keeping [RESET] button pushed for 20 seconds. ("No control" at shipment from the factory.)

Exchanging from "No control" to "Control" : Beep sound is heard (Pi, Pi, Pi, Pi, Pi) and the operation LED 5Hz flashes for 5 seconds.

Exchanging from "Control" to "No control" : Beep sound is heard. (Operation LED does not flash.)

2. Description

1. Purpose

POWER-SELECTION OPERATION

POWER SEL

[100%]

[75%] [50%] [100%]

RAS-10G2ACVP-T

RAS-13G2ACVP-T RAS-18G2ACVP-T

utside temp.

Norm

ail timeOuiet controlled

Norm

ail timeOuiet controlled

Norm

ail timeOuiet controlled

)

(rp

)

(rp

)

(rp

)

(rp

)

(rp

)

(rp

)

25 66 25 73 25

FILE NO. SVM-15058

- 45 -

Item

Operation flow and applicable data,etc

Description

While operating (Auto, Cool, Heat or Dry), select .

Press

Rise

Decrease

to adjust brightness which can be set at 4 levels or to turn it off.

LAMP BRIGHTNESS ADJUSTMENT

Rremote control

LCD

Operation display Brightness

Lamp

illuminatesan

operationwith50%brightnessandthe

operation mode lamp is turned off.

50%

All lamps are turned off.

All turned off

•



In the examples of

and

, the lamp illuminates for 5 seconds before going off.

21.FCU Display lamp brighness control

Purpose

It is necessary to decrease the display lamp brightness or turn it off.

FILE NO. SVM-15058

- 46 -

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓ After approx. three seconds,

The unit beeps three times The green indicator flashes and continues to operate. for 5 seconds.

If the unit is not required to operate at this time, press [RESET] button once more or use the remote controller to turn it off.

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓ After approx. three seconds,

The unit beeps three times. The green indicator flashes

for 5 seconds.

If the unit is required to operate at this time, press [RESET] button once more or use the remote controller to turn it on.

9-3. Auto Restart Function

This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with the set operating conditions in the event of a power supply being accidentally shut down. The operation will resume without warning three minutes after power is restored.

This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

• When the unit is standby (Not operating)

• When the unit is in operation

• While the filter check indicator is on, the RESET button has the function of filter reset betton.

9-3-1. How to Set the Auto Restart Function

To set Auto Restart Function, proceed as follows:

1. The power supply to the unit must be ON ; The function will not set or reset if the power supply is OFF.

2. Press the [RESET] button located on the front panel of the indoor unit for more than 3 seconds.

3. After 3 seconds, the unit beeps three times and the indicator blinks for 5 seconds.

Temporary switch

FILE NO. SVM-15058

- 47 -

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓ After approx. three seconds,

The unit beeps three times and continues to operate. If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

Operation

Press [RESET] button for more than three seconds. (Less than 10 seconds)

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓ After approx. three seconds,

The unit beeps three times. If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

• When the system is on stand-by (not operating)

• When the system is operating

1. The power supply to the unit must be ON ; The function will not set or reset if the power supply is OFF.

2. Press the [RESET] button located on the front panel of the indoor unit for more than 3 seconds.

3. After 3 seconds, the unit beeps three times.

9-3-2. How to Cancel the Auto Restart Function

To cancel Auto Restart Function, proceed as follows.

9-3-3. Power Failure During Timer Operation

• If Timer operation is set and the power supply shut down accidentally, the previous Timer setting

will be cancelled.

• Daily-Timer operation will be not affected by power supply failure, if the remote controller is

located on the position which it can send the command signal to the indoor unit. It is because the remote controller will send signal every 30 minutes and Daily-Timer operation will be restore.

Temporary switch

FILE NO. SVM-15058

- 48 -

9-4. Remote control

9-4-1. Remote control and its functions

Program P1-P4 button (

)

6 7

14 15

20 21

TEMP.

PRESET

TEMP

Infrared signal emitter

Memory and preset button (PRESET) Start/Stop button Temperature up/down and Timer or clock up/down button (TEMP.)

Mode select button (MODE) Swing louver button (SWING) Fan speed button (FAN)

Wide air flow, spot air flow (AIR FLOW)

Set louver button for vertical direction (FIX )

Set louver button for Horizontal divection (FIX )

Economy button (ECO) High power button (Hi-POWER) Plasma ionizer purifier button (PURE)

Comfort sleep button (COMFORT SLEEP) Power selection button (POWER-SEL) On timer button (ON)

Off timer button (OFF) Setup button (SET) Clear button (CLR) Clock setup button (CLOCK) Check button (CHECK) Filter reset button (FILTER) Reset button (RESET)

Weekly ON/OFF button ( ) Day button ( ) Temp for weekly timer button

TEMP

9-4-2. Operation of remote control

Weekly timer operation

4 programs for each day in the week can be set in WEEKLY TIMER. The following items can be set in WEEKLY TIMER operation. a. Operation time (ON timer for Start and OFF timer for Stop operation) b.

Operation mode (COOL, DRY, FAN ONLY)

c. Temperature setting. d. Fan speed setting. e. Special operation (8°C, ECO, Hi-POWER)

( )

FILE NO. SVM-15058

- 49 -

Press to enter WEEKLY TIMER setting.

Blink

Press to select desired day in sequence.

ThesequenceofdaysymbolappearsontheLCD

SU MO TU WE TH

FR SA

WEEKLY SUMO

TUWETHFRSA

(All day)

Press to select the program number.

•



The program 1 is ready for setting while

ispressedPG-1appearsonthe

LCD.

•



Press

tochangetheprogramnumberinthesequenceprogram1toprogram4.

PG-1 PG- 2 PG- 3 PG- 4

Press

or to select the desired time.



The time can be set between 0:00 and 23:50 in 10 minute intervals.

•



Press and hold the button to change setting time for 1 hr.

•



Only one of ON or OFF timer can be set on each program.

ON timer display OFF timer display*

* OFF timer is used to stop the air conditioner only. The display does not

show Operation mode, Temperature, Fan speed and others.

PURE

TEMP.

PRESET

How to set WEEKLY TIMER

FILE NO. SVM-15058

- 50 -

Press

to select desired operation.

Press

TEMP.

to select desired temperature.

•



The temperature can be set between 17

°C and 30°C.

Press to select the desired fan speed.

Add operations, if required.

•



Press

•



Press

to use ECO operation to use Hi-POWER operation.

Adding or editing the program.

The

programcanbesettoperformonalltherequireddaysuntil

is pressed to

confirm the setting

If

addingoreditingaprogramisrequired,pleaserepeatsteps2 - 8 before setting

confirmation.

After adding or editing, press to confirm the setting*.

Weekly timer running Next program

Timer ON or OFF

Next operation time

Operating

Temperature

and Fan speed

Display after pressing SET button

Operating Mode

*Point remote control at air conditioner receiving module then, press SET button until you hear the

“PiPi” sound. This means the setting operation has been completed. As the air conditioner is receiving the signal, you will hear separate “Pi” sounds corresponding to the number of days in the selected setting. An incomplete setting is indicated if the

TIMER lamp is blinking. Press

twice.

Notes

Place the remote control where the indoor unit can receive the signal. This will increase the accuracy of the timing between the remote control and the air conditioning unit.

The ON/OFF timer can be set during the WEEKLY TIMER operation. In this situation, the air conditioner will first follow the normal timer until it is complete; then, it will return to the

WEEKLY TIMER function.

During WEEKLY TIMER operation, all of operation such as MODE, TEMP, FAN, Hi-POWER, ECO and etc., can be adjusted but when the clock reaches the program setting, the operation will return to the set items in the program.

When the remote control is sending a signal to the air conditioner, avoid interference from objects that can block the signal.

FILE NO. SVM-15058

- 51 -

Edit Weekly timer program

Page 21

, follow steps 1 - 3To edit the program after conflrming the weekly timer setting

on below.

Press

•



The day of the week and the program number of the current day will be displayed.

Press

to select the day of the week and press

to select program number to be confirmed.

•



Resetting the operation.

Press

to exit confirming mode.

Deactivating WEEKLY TIMER operation

Press

while “WEEKLY” is displayed on the LCD.

•



The “WEEKLY” indicator will disappear from the LCD. However, the program will remain in the

remote control.

•



The

TIMER lamp goes off.

•

again, LCD shows the next



To reactivate the WEEKLY TIMER operation again, press

program.

The program, after reactivation, is related to the clock

time.

PURE

TEMP.

PRESET

FILE NO. SVM-15058

- 52 -

To delete programs

The individual program

Press .

Press to

select the program number to be deleted.

Press .

•



ON or OFF timer will be cleared and the LCD will blink.

Press

•



Press

to delete the program.

while the LCD is blinking.

The program has now been deleted.

All programs

Press .

•



The day of the week and the program number will be displayed.

Press and hold for 3 seconds.

•



All programs will be deleted and LCD displays current operation.

Notes

Make sure the remote control receiving module on the air conditioner receives the signal from the remote control.

PURE

TEMP.

PRESET

•

The day of the week and the program number is displayed. elect the day to delete the program.

•

FILE NO. SVM-15058

- 53 -

AUTOMATIC OPERATION

To automatically select cooling or fan only operation.

1. PressPress

2. Press

: Select the desiredimode. : Select the desired temperature.

Press

3. Press

Press : Select AUTO, LOW , LOW+ , MED , MED+ , HIGH or Quiet

4. DRY OPERATION (COOLING ONLY)

For dehumidification, a moderate cooling performance is controlled automatically.

. Pre1.1. Press

: Select Dry .

: Set the desired temperature.

. Pre2.

PLASMA IONIZER PURIFIER OPERATION

During air conditioner operation Press to start and plasma ionizer purifier operation.

The plasma air purifier and plasma ionizer purifier can be activated or deactivated during air conditioner is stopped and the plama ionizer purifier starts in conjunction with plasma plasma ionizer purifier operation.

: Start and stop the operation

PressPress

6. Hi-POWER OPERATION

To automatically control room temperature and airflow for faster cooling operation (except in DRY and FAN ONLY mode)

7. ECO OPERATION

To automatically control room to save energy (except in DRY and FAN ONLY mode)

Press : Start and stop the operation.

Note: Cooling operation; the set temperature will increase automatically 1 degree/hour

for 2 hours (maximum 2 degrees increase).

COOLING / FAN ONLY OPERATION

: Select Cool or Fan only .

PressPress

: Set the desired temperature.

PressPress

Cooling: Min. 17°C, Max, 30°C, Fan Only: No temperature indication

: Select AUTO, LOW , LOW+ , MED , MED+

Press

Press HIGH or Quiet

Note :

QUIET is ultra low fan speed for quiet operation.

FILE NO. SVM-15058

- 54 -

AIR VOLUME, AIR DIRECTION AND SWING LOUVERS

•

Changing the air volume, press FAN button

•

Changing the air direction, press FIX button

When changing the air to the vertical direction, release the left side at the desired position.

(

PiPi

at the lower limit).

When changing the air to the horizontal position, release the right side at the desired position.

(

PiPi

sounds at the front).

•

Changing the air direction, press FIX button



Every time...

Pi PiPi

Up-Down

Left-Right

Swing

off

Swing direction changes.

•

Movement of vertical air direction louvers

Cooling operation

(Default setting)

Heating operation

(Default setting)

Louver for air flow direction up and down

The shows the range of air flow direction operation.

The range of swing operation.

Horizontal

(Left-Right)

Swing

Vertical

(Up-Down)

Swing

FILE NO. SVM-15058

- 55 -

10.

COMFORT AIR FLOW

•

Wide air flow : Air flows around the room.

•

Spot air flow : Air flow is concentrated at one point.

11. TIMER OPERATION

Daily timer allows the user to set both the ON & OFF timers and will be activated on a daily basis.

Setting Daily Timer

Setting the ON Timer Setting the OFF Timer

Press for enter ON timer setting

Press

for enter OFF timer setting

Press for select desired ON

timer.

Press for select desired OFF

timer.

Press for set timer. Press for set timer.

Press for cancel timer. Press for cancel timer.

Press for enter ON timer setting

Press for select desired OFF

timer.

Press

for select desired

ON timer.

Press

for enter OFF timer setting

Press again during the ( or ) blink.

• During the daily timer is activating, both arrows ( , ) are indicated.

Note:

Keep the remote control in accessible transmission to the indoor unit

otherwise, the time lag of up to 15 minutes will occur.

The setting will be saved for the next same operation

12.

PRESET OPERATION

Set your preferred operation for future use. The setting will be memorized by the unit for future operation (except air flow direction).

Select your preferred operation.

2. Press and ho

ld for 3 seconds to memorize the setting. The

mark

displays.

Press : Operate the preset operation.

While operating (Auto, Cool, Heat, Dry and these modes with PURE), Select

•

Every time...

When pressed, the air ﬂow direction changes.

Spot left

Cancel Air

Flow

Spot right Spot

center

Wide left

Wide

center

Wide right

FILE NO. SVM-15058

•

- 56 -

15.

COMFORT SLEEP OPERATION

To save energy while sleeping, automatically control air flow and automatically turn OFF.

Press : Select 1, 3, 5 or 9 hrs for OFF timer operation.

Note: The cooling operation, the set temperature will increase automatically

1 degree/hour for 2 hours (maximum 2 degrees increase).

14.

POWER-SELECTION OPERATION

This function is used when its circuit breaker is shared with other electrical appliances.

Press : Select: (for 100%), (for 75%), (for 50%)

In case of 75% and 50% level, number "75" or "50" also flashes for 2 seconds.

It limits the maximum current/ power consumption to 100%, 75% or 50%. The lower the percentage, the higher the saving and also the longer the compressor lifetime.

• When the level is selected, PWR-SEL level flashes on LCD display for 3 seconds.

inadequate capacity may occur.

• Due to the reason that POWER SELECT FUNCTION limits the maximum current,

13. QUIET OPERATION

To operate at ultra low fan speed for quiet operation (except in DRY mode)

Press : Start and stop the operation.

Note: Under certain conditions, QUIET operation may not provide adequate

cooling due to low sound features.

FILE NO. SVM-15058

- 57 -

9-4-3. Name and Functions of Indications on Remote Controller

[Display]

All indications, except for the clock time indicator, are displayed by pressing the button.

Transmission mark

This transmission mark

indicates when the remote controller transmits signals to the indoor unit.

Mode indicator

Indicates the current operation mode. (A : Automatic control,

: Cool, : Dry)

Temperature indicator

Indicates the temperature setting. (17°C to 30°C)

PURE indicator

Shows that the electrical air purifying operation is in progress.

FAN speed indicator

Indicates the selected fan speed. AUTO or five fan speed levels

(

LOW , LOW+ , MED , MED+ , HIGH ) can be shown. Indicates AUTO when the operating mode is

either AUTO or

: Dr y.

TIMER and weekly timer indicator

The time setting for timer operation and weekly timer function is indicated.

The current time is always indicated except during TIMER operation.

Hi-POWER indicator

Indicates when the Hi-POWER operation starts. Press the Hi-POWER button to start and press it

again to stop the operation.

(PRESET) indicator

Flashes for 3 seconds when the PRESET button is pressed during operation.

The

mark is shown when holding down the button for more than 3 seconds while the mark is flashing.

Press another button to turn off the mark.

POWER-SEL

A, B change indicator remote controller

When the remote controller switching function is set, “B” appears in the remote controller display. (When the remote controller setting is “A”, there is no indication at this position.)

11 Comfort sleep

Indicates when comfort sleep is activaled. Press comfort sleep button to select function.

12 Quiet

Indicates when quiet is activated. Press Fan button to start and press it again to select other fan speed for operation.

Swing

ECO indicator

Indicates when louver is swing. Press swing button to start the swing operation and press it again to stop the swing operation.

Indicates the selected POWER-SEL level.

( 100%,

75%,

50%)

Indicates when the ECO is in activated. Press the ECO button to start and press it again to stop operation.

FILE NO. SVM-15058

- 58 -

10. INSTALLATION PROCEDURE

10-1. Installation Diagram of Indoor and Outdoor Units

Before installing the wireless remote controller

• Loading Batteries

1. Remove the battery cover.

2. Insert 2 new batteries (AAA type) following the (+) and (

) positions.

3 Batteries

2 Wireless remote controller

Insulate the refrigerant pipes separately with insulation, not together.

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

For the rear left and left piping

Wall

Make sure to run the drain hose sloped downward.

Do not allow the drain hose to get slack.

Cut the piping hole sloped slightly.

Batteries

Flat head wood screw

Remote control holder

Wireless remote control

Shield pipe

(Attach to the front panel.)

Air f lter

Hook

Installation plate

Hook

52 mm or more

190 mm or more

225 mm or more

Remark :

• Detail of accessory and installation parts can see in the accessory sheet.

• Some pictures might be different from the actual parts.

6 mm thick heat resisting polyethylene foam

Bush body

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

Rear right

Bottom right

Rear left

Bottom left

Left

Vinyl tape Apply after carrying out a drainage test.

Saddle

Extension drain hose (Not available, provided by installer)

100 mm or more

600 mm or more

FILE NO. SVM-15058

- 59 -

Fig. 8-3-1

Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind. Use ∅ 8 mm or ∅ 10 mm anchor bolts and nuts.

Parts name

Refrigerant piping Liquid side : ∅6.35 mm Gas side : 9.52 mm

Pipe insulating material (polyethylene foam, 6 mm thick)

Putty, PVC tapes

Part

Code

Q'ty

One

each

One

each

∅

(10,13k Series)

∅12.70 mm

(18k Series)

10-2. Installation

10-2-1. Optional installation parts

Fixing bolt arrangement of outdoor unit

Drain outlet

Air inlet

Air outlet

125 mm108 mm

Ø25 mm

28 mm

320 mm

86 mm

102 mm

90 mm

600 mm

FILE NO. SVM-15058

- 60 -

Part

No.

Part name (Q’ty)

Installation plate x 1

Wireless remote control x 1

Part name (Q’ty)

Remote control holder x 1

Part No.

Others

Name

Owner’s manual

Installation manual

Part name (Q’ty)

Mounting scr

ew ∅4 x 25 s x

Flat head wood screw ∅3.1 x 16 s x 2

Battery x 2

10-2-2. Accessory and installation parts

FILE NO. SVM-15058

- 61 -

10-2-3. Installation/Servicing Tools

Changes in the product and components

In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2 UNF 20 threads per inch)

• In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)

New tools for R410A

Gauge manifold

Charge hose

Electronic balance for refrigerant charging

Torque wrench (nominal diam. 1/2, 5/8)

Flare tool (clutch type)

Gauge for projection adjustment

Vacuum pump adapter

Gas leakage detector

Applicable to R22 model

——

Changes

As pressure is high, it is impossible to measure by means of conventional gauge. In order to prevent any other refrigerant from being charged, each port diameter has been changed.

In order to increase pressure resisting strength, hose materials and port size have been changed (to 1/2 UNF 20 threads per inch). When purchasing a charge hose, be sure to confirm the port size.

As pressure is high and gasification speed is fast, it is difficult to read the indicated value by means of charging cylinder, as air bubbles occur.

The size of opposite sides of flare nuts have been increased. Incidentally, a common wrench is used for nominal diameters 1/4 and 3/8.

By increasing the clamp bar’s receiving hole, strength of spring in the tool has been improved.

Used when flare is made by using conventional flare tool.

Connected to conventional vacuum pump. It is necessary to use an adapter to prevent vacuum pump oil from flowing back to the charge hose. The charge hose connecting part has two ports-one for conventional refrigerant (7/16 UNF 20 threads per inch) and one for R410A. If the vacuum pump oil (mineral) mixes with R410A a sludge may occur and damage the equipment.

Exclusive for HFC refrigerant.

• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the U. S’s ARI specified rose color (ARI color code: PMS 507).

• Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to the charge hose’s port size.

FILE NO. SVM-15058

- 62 -

10-3. Indoor Unit

10-3-1. Installation Place

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

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

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

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

• The indoor unit shall be installed as top of the indoor unit comes to at least 2 m height.

Also, it must be avoided to put anything on the top of the indoor unit.

CAUTION

• Direct sunlight on the indoor unit wireless

receiver should be avoided.

• The microprocessor in the indoor unit should

not be too close to RF noise sources. (For details, see the owner's manual.)

Remote control

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

• Do not install the remote control in a place exposed

to direct sunlight or close to a heating source such as a stove.

• Keep the remote control at least 1 m apart from

the nearest TV set or stereo equipment. (This is necessary to prevent image disturbances or noise interference.)

• The location of the remote control should be

determined as shown below.

10-3-2. Cutting a Hole and Mounting

Installation Plate

Cutting a hole

When installing the refrigerant pipes from the rear.

1. After determining the pipe hole position on the installation plate ( ð ) drill the pipe hole (Ø65 mm) at a slight downward slant to the outdoor side.

NOTE :

• When drilling into a wall that contains a metal lath,

wire lath or metal plate, be sure to use a pipe hole brim ring sold separately.

Mounting the installation plate

Fig. 10-3-3

Fig. 10-3-2

Fig. 10-3-1

The

center of the pipe hole

is above the arrow.

45º

75º

(Side view) (Top view)

Indoor unit

Reception range

Remote control

Reception range

Indoor unit

Anchor bolt holes

Hook

Pipe hole

Installation

plate

Mounting screw

Weight

Indoor unit

Thread

2 m or more from ﬂ oor

190

104

225

137

FILE NO. SVM-15058

- 63 -

When the installation plate is directly mounted on the wall

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

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

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a mounting screw, do not use the anchor bolt holes. Otherwise the unit may fall down and result in personal injury and property damage.

Fig. 10-3-4

Fig. 10-3-5

CAUTION

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

• In case of block, brick, concrete or similar type

walls, make 5 mm dia. holes in the wall.

•

Insert clip anchors for appropriate mounting screws .

NOTE :

• Secure four corners and lower parts of the

installation plate with 4 to 6 mounting screws to install it.

Anchor bolt

Projection 15mm or less

5 mm dia. hole

Clip anchor (local parts)

5 Mounting screw

Ø4 × 25

Installation plate (Keep horizontal direction.)

10-3-3. Piping and Drain Hose Installation

Piping and drain hose forming

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

Fig. 10-3-7

e-cutting bush body slit

For Bottom right

Cut out the slit on bottom right side of bush body for

bottom right connection with a pair of nippers.

For Left or Right

Tak

e off Cap and cut out the slit on left or right

ide of bush body for the left or right connection

with a pair

of nippers.

Changing

drain hose

For leftward connection's piping,

it is necessary

to change

the drain hose and dain cap.

How to remove the drain cap

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

Fig. 10-3-8

•

Rear right

Rear left

Bottom left

Left

Bottom right

Right

Die-cutting

bush body

slit

Take off cap

and cut bush

body slit

Changing

drain hose

Piping preparation

Changing

drain

hose

FILE NO. SVM-15058

- 64 -

How to remove the drain hose

• The drain hose can be removed by removing the

Fig. 10-3-9

4 mm

How to attach the drain cap

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

Fig. 10-3-10

Heat insulator

Drain hose

screw securing the drain hose and then pulling out the drain hose.

• When removing the drain hose, be careful of any

sharp edges of steel plate. The edges can injuries.

• To install the drain hose, insert the drain hose firmly

until the connection part contacs with heat insulator, and then secure it with original screw.

No gap

Insert a hexagon wrench (Ø4mm)

Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap. Application causes deterioration and drain leakage of the plug.

2. Firmly insert drain cap.

Fig. 10-3-11

Always use the original screw that secured the drain hose to the unit. If using a different screw may cause water to leak.

Insert the drain hose firmly until the connector contacts with the insulation, then secure it in place using the original screw.

Fig. 10-3-12

•

ke off the cap by hand and cut of the slit.

fter sc

ribing

slits of the bush body with a knife or

making-off, cut them with a pair of nippers or an

equivalent tool.

CAUTION

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

In case of right or left piping

•

How to attach the drain hose

Slit

Cap

•

Arter scribing slits of

the bush body with a knife or a making-off pin, cut them with a pair of nippers or an

equivalent tool.

In case of bottom right piping

Slit

Fig.

10-3-13

Left-hand connection with piping

Bend the connecting pipe so that it is laid within 43 mm above the wall surface.

the connecting pipe is laid exceeding 43 mm above

the wall surface, the indoor unit may unstably be set on the wall.

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

Refer to the table below for the bending radius of each connection pipe.

Outer diameter

∅ 6.35 mm ∅ 9.52 mm ∅ 12.7 mm

Bending radius

30 mm

40 mm

50 mm

FILE NO. SVM-15058

- 65 -

Fig. 10-3-14

NOTE :

If the pipe is incorrectly, the indoor unit may unstably be set on the wall.

After passing the connecting pipe through the pipe hole, connect the connecting pipes to the auxiliary pipes and wrap the facing tape around them.

Bend the connecting pipe within a radius of 30 mm.

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

10-3-4. Indoor Unit Fixing

•

For detaching the indoor unit from the installation plate, pull the indoor unit toward you while pushing its bottom up at the speciﬁ ed parts.

1.Pass the pipe through the hole in the wall and hook the indoor unit on the installation plate at the upper hook. Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate. While pressing the indoor unit onto the wall, hook it at the lower part on the installation plate. Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate.

Push Push

10-3-5. In case of Indoor unit is

ﬁ xed to

Installation plate with screws

Hook here.

Installation plate

Hook

Push

Installation plate

Hook

Remove 2 screw caps with ﬂat screwdriver. Fix them with ∅

4x10~14L, 2 screws which are prepared at the site. Cover screw caps as previous process.

CAUTION

•

Bind the auxiliary pipes (two) and connecting cable with facing tape tightly. In case of leftward piping and rear-leftward piping, bind the auxiliary pipes (two) only with facing tape.

Care

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

pipes and connecting pipes to one another and cut off the insulating tape wound on the connecting pipe to avoid

double-taping at the joint;

moreover, seal the joint with the vinyl tape, etc.

•

Since

dewing results in a machine trouble, ma

ke sure to insulate both connecting pipes. (Use polyethylene foam as insulating material.) When

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

•

Indoor unit

Auxiliary pipes

Connecting cable

Installation plate

•

Fig. 10-3-1

Screw cap

Flat screwdriver

Fig.

10-3-16

FILE NO. SVM-15058

- 66 -

10-3-6. Drainage

1. Run the drain hose sloped downwards.

NOTE :

• The hole should be made a slight downward slant

on the outdoor side.

Fig. 10-3-17

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

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

Fig. 10-3-18

CAUTION

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

dew-dropping.

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

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

50 mm or more

Do not rise the drain hose.

Do not form the drain hose into the wavy shape.

Do not put the drain hose end into water.

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

Shield pipe

Extension drain hose

Drain hose

Inside the room

Fig. 10-3-19

Wal l

Drain

guide

Space for pipes

FILE NO. SVM-15058

- 67 -

10-4. Outdoor Unit

10-4-1. Installation Place

• A place which provides enough space around the outdoor unit as shown in the diagram.

• A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration.

• A place where the operation noise and discharged air do not disturb neighbors.

• A place which is not exposed to a strong wind.

• A place free of combustible gases.

• A place which does not block a passageway.

• When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

• An allowable length & height, please refer from

1. SPECIFICATIONS.

• A place where the drain water does not cause any

problems.

Precautions for adding refrigerant

• Use a scale having a precision with at least 10 g per index line when adding the refrigerant.

Do not use a bathroom scale or similar instrument.

• Use liquid refrigerant when refilling the refrigerant. Since the refrigerant is in liquid form, it can fill quickly.

Therefore, perf orm the filling operation carefully and insert the refrigerant gradually.

CAUTION

1 . Install the outdoor unit without anything

blocking the discharging air.

2 . When the outdoor unit is installed in a place

always exposed to strong winds like on the coast or on a high story of a building, secure the normal fan operation using a duct or a wind shield.

3 . Especially in windy areas, install the unit to

prevent the admission of wind.

4 . Installation in the following places may result

in trouble. Do not install the unit in such places.

• A place full of machine oil.

• A saline-place such as the coast.

• A place full of sulfide gas.

• A place where high-frequency waves are

likely to be generated, such as from audio equipment, welders, and medical equipment.

Fig. 10-4-1

Strong wind

10-4-2. Refrigerant Piping Connection

Flaring

1. Cut the pipe with a pipe cutter.

2. Deburr the inside of the pipe at its end. Take steps to ensure that the removed burrs will not enter the pipe.

3. Remove the fl are nuts provided with the indoor and outdoor units, and insert them into the pipe.

4. Flare the pipe. The projection margin of the pipe must be checked.

5. Check that the ß are has the appropriate shape.

Obliquity Roughness Warp

Pipe

Die

Pipe A B Flare Nut

Outside

diameter

Thickness

Rigid

(clutch type)

R410A tool

Imperial

(wing nut

type)

R410A tool

C Tighten torque

mm mm mm mm mm mm N·m kgf·m

6.35 0.8 0 to 0.5 1.5 to 2.0 9.1 17 14 to 18 1.4 to 1.8

9.52 0.8 0 to 0.5 1.5 to 2.0 13.2 22 33 to 42 3.3 to 4.2

12.7 0.8 0 to 0.5 2.0 to 2.5 16.6 26 50 to 62 5.0 to 6.2

FILE NO. SVM-15058

- 68 -

Tightening Connection

Align the centers of the connecting pipes and tighten the flare nut as much as possible with your fingers. Then tighten the nut with a wrench and torque wrench as shown in the figure.

Fig. 10-4-2

• Tightening torque for connection of flare pipe The pressure of R410A is higher than R22.

(Approx. 1.6 times.) Therefore securely tighten the flare pipes which connect the outdoor unit and the indoor unit with the specified tightening torque using a torque wrench. If any flare pipe is incorrectly connected, it may cause not only a gas leakage but also trouble in the refrigeration cycle.

Outer dia. of copper pipe

Ø6.35 mm Ø9.52 mm Ø12.7 mm

Tightening torque

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

Fig. 10-4-3

Half union

Flare nut

Externally threaded side

Internally threaded side

Use a wrench to secure.

Use a torque wrench to secure.

Flare at indoor unit side

Flare at outdoor unit side

Incused line

• Shaping pipes

1. How to shape the pipes Shape the pipes along the incused line on the outdoor unit.

2. How to fit position of the

pipes Put the edges of the pipes

to the place with a distance of 85 mm from the incused line.

10-4-3. Evacuating

After the piping has been connected to the indoor unit, perform the air purge.

AIR PURGE

Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump. Do not use the refrigerant in the outdoor unit.

For details, see the vacuum pump manual.

Fig. 10-4-4

Use a vacuum pump

Be sure to use a vacuum pump with counter-flow prevention function so that oil inside the pump does not flow back into the air conditioner pipes when the pump stops. (If oil inside the vacuum pump enters into the air conditioner circuit which uses R410A, trouble with the refrigeration system may de velop.)

1 . Connect the charge hose from the manifold valve

to the service port of the gas side packed valve.

2 . Connect the charge hose to the port of the

vacuum pump.

3 . Open fully the low pressure side handle of the

gauge manifold valve.

4 . Operate the vacuum pump to begin evacuating.

Perform evacuating for about 15 minutes if the piping length is 20 meters (15 minutes for 20 meters) (assuming a pump capacity of 27 liters per minute).

Confirm that the compound pressure gauge reading is –101 kPa (

76 cmHg).

5 . Close the lo w pressure valve handle of gauge

manifold.

6. Open fully the valve stem of the packed valves (both sides of Gas and Liquid).

7 . Remo ve the charging hose from the service port. 8 . Securely tighten the caps on the packed valv es.

CAUTION

• Do not apply excessive force. Otherwise, the nut may break.

(Unit : N·m)

Packed valve at liquid side

Pressure gauge

Manifold valve

Packed valve at gas side

Vacuum pump adapter for counter-flow prevention

-101 kPa (-76 cmHg)

Handle Lo

Compound pressure gauge

Char

ge hose

Connecting pipe

Vacuum

pump

Charge hose

Handle Hi (Keep full closed)

Service port (Valve core (Setting pin))

(For R410A only)

FILE NO. SVM-15058

- 69 -

CAUTION

• KEEP IMPORTANT 5 POINTS FOR PIPING WORK

(1) Take away dust and moisture (Inside of the

connecting pipes.) (2) Tight the connection (between pipes and unit) (3) Evacuate the air in the connecting pipes using

a VACUUM PUMP. (4) Check gas leak (connected points)

(5) Be sure to fully open the packed valves

before operation.

Cap Torque

Cap Size (H)

Valve Rod Cap

Service Port Cap

H17 - H19

H22 - H30

H14

H17

14~18 N.m

(1.4 to 1.8 kgf·m)

33~42 N.m

(3.3 to 4.2 kgf·m)

8~12 N.m

(0.8 to 1.2 kgf·m)

14~18 N.m

(1.4 to 1.8 kgf·m)

• Open the valve stem all the way out, but do not try to open it beyond the stopper.

• Securely tighten the valve cap with torque in the following table

Fig. 10-4-5

Hexagon wrench is required.

Service Port Cap

Valve Rod Cap

Pipe size of Packed Valve Size of Hexagon wrench

12.70 mm and smallers A = 4 mm

15.88 mm A = 5 mm

FILE NO. SVM-15058

- 70 -

The power supply can be selected to connect to indoor unit or outdoor unit. Choose proper way and connect the power supply and connecting cable by follow the instruction as following.

Wiring of the cable can be carried out without removing the main panel.

1. Remove the front panel. Pull and lift up front panel until it stops, move arms on left and right side to outward direction then pull toward you to remove front panel. w Beware front panel fall down that may cause of injure or part damage.

2. Remove the terminal cover and cord clamp.

3. Insert the cable (according to the local cords) into the pipe hole on the wall.

4. Take out the cable protrudes about 20 cm from the front.

5. Insert the cable fully into the terminal block and secure it tightly with screws.

6. Tightening torque : 1.2 N·m (0.12 kgf·m)

7. Secure the cable with the cord clamp.

8. Fix the terminal cover and attach front panel to the indoor unit.

Cable

about 20 cm

Front panel

Terminals block

Main panel

Terminal cover

1. Remove the valve cover from the outdoor unit.

2. Connect the cable to the terminals as identiﬁ ed with their respective matched numbers on the terminal block of indoor and outdoor unit.

3. When connecting the cable to the outdoor unit terminals, make a loop as shown in the installation diagram of indoor and outdoor unit to prevent water coming in the outdoor unit.

4. Insulate the unused cords (conductors) from any water coming in the outdoor unit. Proceed them so that they do not touch any electrical or metal parts.

10-5-1. Wiring Connection

Indoor unit

Carry out attaching in the reverse order to removal.

Keep front panel horizontally and put both arms into guides. Make sure both arms are inserted completely. If the gap between main panel and front panel isn’t even, remove and attach again.

How to attach the front panel

Valve cover

Terminals block

10-

5. Electrical works

• Check local electrical cords and also any speciﬁ c wiring instructions or

Outdoor unit

• Be

sure to refer to the wiring system diagram labeled inside the

main panel.

limitations.

CAUTION

Fig.

10-5-1

Fig. 10-

5-2

Fig. 10-

5-3

Fig. 10-

5-4

Arm

Guide

Arm

Main panel

Front panel

Gap between main panel and front panel should be even.

Model RAS-10G2KCVP-T RAS-13G2KCVP-T RAS-18G2KCVP-T

Power source 50Hz, 220V Single phase Maximum running current 4.75A 6.04A 9.00A Circuit breaker rating 6.0A 7.5A 12.0A

Wire type :

Power supply cable More than H07RN-F or 60245 IEC66 (1.5 mm2 or more) Connecting cable More than H07RN-F or 60245 IEC66 (1.5 mm

or more)

FILE NO. SVM-15058

- 71 -

10-5-2. Power Supply and Connecting Cable Connection

Power Supply Input at Outdoor Unit Terminal Block (Optional)

Indoor Unit Outdoor Unit

Connecting CABLE

Connecting cable connect to terminal block (1, 2, 3, ˙)

Stripping length of the connecting cable

Connecting cable

50 mm

10 mm

Earth line

about 20 cm

45 mm

10 mm

Connecting cable

Earth lineEarth line

Connecting cable

Power cord

Terminal block

1. The power supply must be same as the rated of air conditioner.

2. Prepare the power source for exclusive use with air conditioner.

3. Circuit breaker must be used for the power supply line of this air conditioner.

4. Be sure to comply power supply and connecting cable for size and wiring method.

5. Every wire must be connected ﬁ rmly.

6. Perform wiring works so as to allow a general wiring capacity.

7. Wrong wiring connection may cause some electrical part burn out.

8. Incorrect or incomplete wiring is carried out, it will cause an ignition or smoke.

9. This product can be connected to main power supply.

Connection to ﬁxed wiring : A switch which disconnects all poles and has a contact separation at least 3mm must be incorporated in the ﬁxed wiring.

CAUTION

FILE NO. SVM-15058

- 72 -

Fig. 10-6-2

10-6-3. Test operation

To switch the TEST RUN (COOL) mode, press Temporary switch for 10 sec. (The unit will make a short Pi sound.)

Temporary switch

Fig. 10-6-3

10-6-4. Auto restart setting

This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure.

The product was shipped with Auto Restart function

in the off position. Turn it on as required.

Press and hold the Temporary switch on the indoor unit for 3 seconds to set the operation. (3 Pi sound and OPERATION lamp blink 5 time/sec for 5 seconds)

Press and hold the Temporary switch on the indoor unit for 3 seconds to cancel the operation. (3 Pi sound but OPERATION lamp does not blink)

•

In case of ON timer or OFF timer are set, AUTO

RESTART OPERATION dose not activate.

To separate using of remote control for each indoor unit in case of 2 air conditioner are installed near.

Remote Control B Setup.

Press RESET

button on the indoor unit to turn the air

conditioner ON.

2. Point the remote control at the indoor unit.

Push and hold

button on the Remote Control by

the tip of the pencil. "00" will be shown on the display.

Pre

ss during pushing "B" will show on the display and "00" will disappear and the air conditioner will turn OFF. The Remote Control B is memorized.

Note :

2. Remote Control

A has not “A” display.

Default setting of Remote Control from factory

is A.

• When two indoor units are installed in the same room or adjacent two rooms, if operating a unit, two units may receive the remote control signal simultaneously and operate. In this case, the operation can be preserved by setting either one remote control to B setting. (Both are set to

A setting in factory shipment.)

• The remote control signal is not received when the

settings of indoor unit and remote control are different.

•

There is no relation between A setting/B seting and A room/B room when connecting the piping and cables.

Repeat above step to reset Remote Control to be A.

Information

10-

6-2. Remote Control A-B Selection

10-

6. Others

10-6-1. Gas leak test

Check the ﬂare nut connections, valve stem cap connections and service port cap connection for gas leak with a leak detection or soap water.

Fig. 10-6-1

•

Valve stem cap connection

Service port cap connection

Valve stem cap connection

Flare nut connections (Outdoor unit)

Flare nut connections (Indoor unit)

FILE NO. SVM-15058

- 73 -

11. HOW TO DIAGNOSE THE T R OUBLE

The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the trouble diagnosis procedure as described below.

(Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.)

Table 11-1

Fig. 11-1

No.

1 2 3 4 5 6 7 8 9

T roub leshooting Procedure

First Confirmation Primary Judgment Judgment by Flashing LED of Indoor Unit Self-Diagnosis by Remote Controller (Check Code) Judgment of Trouble by Every Symptom Check Code 1C and 1E

How to Diagnose Trouble in Outdoor Unit

Troubleshooting

How to Check Simply the Main Parts How to Simply Judge Whether Outdoor Fan Motor is Good or Bad





Precautions when handling the inverter

CAUTION: HIGH VOLTAGE

The high voltage circuit is incorporated. Be careful to do the check service, as the electric shock may be caused in case of touching parts on the

P.C. board by hand.

The inverter will be incorporated starting with this unit.



The control circuitry has an uninsulated construction.

IGBT × 6

FET × 6

MCU

Compressor

Fan motor

Shared potential

Driver

Amplifier

FILE NO. SVM-15058

- 74 -

CAUTION

A high voltage (equivalent to the supply voltage) is also energized to ground through the sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered with insulated tubes for protection. Nevertheless, care must be taken to ensure that these wires are not pinched.

Take sufficient care to avoid directly touching any of the circuit parts without first turning off the power.

At times such as when the circuit board is to be replaced, place the circuit board assembly in a vertical position.

Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in damage to the components.

Sensor leads

Do NOT la y the circuit board assembly flat.

K Precautions when inspecting the control section of the outdoor unit

NOTE :

A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time . After turning off the power source, if touching the charging section before discharging, an electrical shock may be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.

< Discharging method >

1. Remo ve the inverter cover (plating) by opening four mounting claws.

As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to voltage between + – terminals of the electrolytic capacitor (

500µF/400V or 760µF/400V) on P.C. board

(“CAUTION HIGH VOLTAGE” is indicated.) , and then perform discharging.

Fig. 11-2

Discharging position (Discharging period 10 seconds or more)

Plug of soldering iron

Inverter cover

P. C. board (Soldered surface)

Fig. 11-3

FILE NO. SVM-15058

- 75 -

11-1. First Confirmation

11-1-1. Confirmation of Power Supply

Confirm that the power breaker operates (ON) normally.

11-1-2. Confirmation of Power Voltage

Confirm that power voltage is AC 220–230–240 ± 10%. If power voltage is not in this range, the unit may not operate normally.

11-1-3. Operation Which is not a Trouble (Program Operation)

For controlling the air conditioner, the program operations are b uilt in the microcomputer as described in the following table .

If a claim is made for running operation, check whether or not it meets to the contents in the following table. When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and main-

taining of air conditioner.

Table 11-1-1

No.

Operation of air conditioner

When power breaker is turned “ON”, the operation indicator (white) of the indoor unit flashes.

Compressor may not operate even if the room temperature is within range of compressor-ON.

In Dry and ECO mode, FAN (air flow) display does not change even though FAN (air flow select) button is operated.

In AUTO mode, the operation mode is changed.

Description

The OPERATION lamp of the indoor unit flashes when power source is turned on. If [ ] button is operated once, flashing stops. (Flashes also in power failure)

The compressor does not operate while compressor restart delay timer (3-minutes timer) operates. The same phenomenon is found after power source has been turned on because 3-minutes timer operates.

The air flow indication is fixed to [AUTO].

After selecting Cool or Fan only, select an operation mode again if the compressor keeps stop status for 15 minutes.

FILE NO. SVM-15058

- 76 -

11-2. Primary Judgment

To diagnose the troubles, use the following methods.

1) Judgment by flashing LED of indoor unit

2) Self-diagnosis by service check remote controller

3) Judgment of trouble by every symptom

Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.

11-3. Judgment by Flashing LED of Indoor Unit

While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the contents of self-diagnosis are displayed with block on the indoor unit indication section.

Table 11-3-1

NOTES :

1. Some check code will flash display of the indoor unit, when the air conditioner operates with some limitation.

2. Some check code will flash display of the indoor unit and stop operation of the air conditioner.

3. When item B and C or item B and apart of item E occur concurrently, priority is given to the block of item B.

OPERATION (white) Flashing display (1 Hz)

OPERATION (white) TIMER (white) Flashing display (5 Hz)

OPERATION (white) FILTER (white) Flashing display (5 Hz)

OPERATION (white) TIMER (white) Flashing display (5 Hz)

OPERATION (white) Flashing display (5 Hz)

Protective circuit operation for indoor P.C. board

Protective circuit operation for connecting cable and serial signal system

Protective circuit operation for outdoor P.C. board

Protective circuit operation for others (including compressor)

Indoor indication

lamp flashes.

Which lamp

does flash?

Item

Check

code

Block display Description for self-diagnosis

• When turn ON power supply.

• Power supply ON after failure or OFF.

• This flashing display is not air conditioner failure.

4. The check codes can be confirmed on the remote controller for servicing.

FILE NO. SVM-15058

- 77 -

Alphanumeric characters are used for the check codes.

is 5. is 6. is A. is B. is C. is D.

11-4. Self-Diagnosis by Remote Controller (Check Code)

1. If the lamps are indicated as shown B to E in Table 11-4-1, execute the self-diagnosis by the remote controller.

2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condition

and indicates the information of the self-diagnosis on the display of the remote controller with the check codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds (Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.

Press [CHECK] button with a tip of pencil to set the remote controller to the service mode.

• “ ” is indicated on the display of the remote controller.

Press [ON/OFF ] button

If there is no fault with a code, the indoor unit will beep once (Beep) and the display of the remote controller will change as follows :

• The TIMER indicator of the indoor unit flashes continuously. (5 times per 1 sec.)

• Check the unit with all 52 check codes ( to ) as shown in Table-11-4-1.

• Press [ON/OFF ] button to change the check code backward.

If there is a fault, the indoor unit will beep for 10 seconds (Beep, Beep, Beep...).

Note the check code on the display of the remote controller.

• 2-digits alphanumeric will be indicated on the display.

• All indicators on the indoor unit will flash.

(5 times per 1 sec.)

• • •

Press [ ] button to release the service mode.

• The display of the remote controller returns to as it

was before service mode was engaged.

Press [CHECK] then [CLR] button. After service finish for clear service code in memory.

• "7F" is indicated on the display of the remote

control.

11-4-1. How to Use Remote Controller in Service Mode

TEMP

PRESET

FILE NO. SVM-15058

- 78 -

11-4-2 Caution at Servicing

1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function.

2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air

conditioner to normal operation. However, the check codes are not deleted from memory of the microcomputer.

3. After servicing finished, press [CLR] button of remote controller under service mode status to send code "7F" to the

indoor unit. The check code stored in memory is cleared.

Table 11-4-1

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Indoor P.C. TA sensor ; The room Operation Flashes when 1. Check the sensor TA and connection.

board. temperature sensor is continues. error is detected. 2. In case of the sensor and its

short-Circuit or disconnection. connection is normal, check the

P.C. board.

TC sensor ; The heat Operation Flashes when 1. Check the sensor TC and connection.

exchanger temperature continues. error is detected. 2. In case of the sensor and its

sensor of the indoor unit connection is normal, check the

is out of place, disconnection, P.C. board.

short-circuit or migration.

Fan motor of the indoor unit All OFF Flashes when 1. Check the fan motor and connection.

is failure, lock-rotor, short- error is detected. 2. In case of the motor and its

circuit, disconnection, etc. connection is normal, check the

Or its circuit on P.C. board P.C. board.

has problem.

Other trouble on the indoor Depend on Depend on Replace P.C. board.

P.C. board. cause of cause of

failure. failure.

Action and Judgment

FILE NO. SVM-15058

–

79–

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never and connecting connecting cable or operates error is detected. operate. cable. miss-wiring. continue. Flashing stop Check connecting cable and correct

2) Operation signal has not Outdoor unit and outdoor unit if defective wiring. send from the indoor unit stop. start to operate Check 25A fuse of inverter P.C. board. when operation start. when the return Check 3.15A fuse of inverter

3) Outdoor unit has not signal from the P.C. board. send return signal to the outdoor unit is Check operation signal of the indoor indoor unit when operation normal. unit by using diode. Measure voltage started. at terminal block of the indoor unit

4) Return signal from the between No.2 and No.3 (or L2 and S) outdoor unit is stop during If signal is varied 15-60V continuously, operation. replace inverter P.C. board. Some protector If signal is not varied, replace indoor (hardware, if exist) of the P.C. board. outdoor unit open 4) The outdoor unit abnormal stop at circuit of signal. some time. Signal circuit of indoor If the other check codes are found P.C. board or outdoor concurrently, check them together. P.C. board is failure Check protector (hardware) such in some period. as Hi-Pressure switch,

Thermal-Relay, etc. Check refrigerant amount or any possibility case which may caused high temperature or high pressure. Check operation signal of the indoor unit by using diode. Measure voltage at terminal block of the indoor unit between No.2 and No.3 (or L2 and S)

If signal is varied 15-60V continuously, replace inverter P.C. board. If signal is not varied, replace indoor P.C. board.

Action and Judgment

* Signal send only 1 minute and stop. Because of return signal from outdoor unit has not received. ** Signal resend again after 3 minutes stop. And the signal will send continuously. *** 1 minute after resending, the indoor unit display flashes error.

VDC

Time (Min)

34 78

Measured signal voltage by apply diode

3 minutes Delay, start counting from power supply ON or remote OFF.

3 minutes stop

***

Sending signal of the indoor unit when have not return

signal from the outdoor unit.

Voltage variation stop or have not voltage output.

Note : Operation signal of the indoor unit shall be measured in the sending period as

picture below.

FILE NO. SVM-15058

–

80 –

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the

board is over limit in short time. error is detected compressor, and operate again.

8 times*. 2. If outdoor fan does not operate or

operate but stop after some period,

replace the inverter P.C. board.

3. If outdoor fan operates normally,

Inverter P.C. board is

failure, IPM shortage, etc.

Compressor current is

higher than limitation,

lock rotor, etc.

measure 3-Phase output of inverter

P.C. board (150-270VAC) at the

connecting lead wire of compressor.

4. If 3-Phase output is abnormal, replace

inverter P.C.Board.

5. If 3-Phase output is normal, replace

compressor. (lock rotor, etc.)

Compressor position-detect All OFF Flashes after 1. Remove connecting lead wire of the

circuit error or short-circuit error is detected compressor, and operate again.

between winding of 8 times*. 2. If outdoor fan does not operate or

compressor. operation but stop after some period,

replace the inverter P.C. board.

3. If outdoor fan operates normally,

measure resistance of compressor

winding. If circuit is shortage, replace

the compressor.

Current-detect circuit of All OFF Flashes after Even if trying to operate again, all

inverter P.C. board error. error is detected operations stop, replace inverter

4 times*. P.C. board.

TE sensor ; The heat All OFF Flashes after 1. Check sensors TE, TS and connection.

exchanger temperature error is detected 2. In case of the sensors and its

sensor of the outdoor unit 4 times*. connection is normal, check the

either TS sensor ; Suction inverter P.C. board.

pipe temperature sensor,

out of place, disconnection

or shortage.

TD sensor ; Discharge pipe All OFF Flashes after 1. Check sensors TD and connection.

temperature sensor is error is detected 2. In case of the sensor and its

disconnection or shortage. 4 times*. connection is normal, check the

inverter P.C. board.

Outdoor fan failure or its All OFF Flashes after 1. Check the motor, measure winding

drive-circuit on the inverter error is detected resistance, shortage or lock rotor.

P.C. board failure. 8 times*. 2. Check the inverter P.C. board.

TO sensor ; The outdoor Operation Record error 1. Check sensors TO and connection.

temperature sensor is continues. after detected 2. In case of the sensor and its

disconnection or shortage. 4 times*. connection is normal, check the

But does not inverter P.C. board.

flash display.

Action and Judgment

FILE NO. SVM-15058

–

81 –

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display flashing

error

Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as

(Relation of voltage, current error is detected packed valve opening, refrigerant

and frequency is abnormal) 8 times*. amount and power supply (rate +

10%,

Overloading operation of both of operation and non operation

compressor caused by condition).

over-charge refrigerant, 2. Check P.M.V. by measure the

P.M.V. failure, etc. resistance of the coil and confirm its

Compressor failure (High operation (sound of initial

current). operation, etc.)

3. Observe any possibility cause which

may affect operation load of

compressor.

4. Operate again. If compressor

operation is failure when 20 seconds

passed (count time from operation

starting of compressor), replace

compressor.

* 4 or 8 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.

After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)

When error count comes 4 or 8 times, record error to check code. But after re-starting operation, if no error is

detected and air conditioner can operate more than 6 minutes, error count is cleared.

The others Return signal of the outdoor Indoor unit Flashes when 1. Check power supply (Rate +

10%)

(including unit has been sent when operates error is detected. 2. If the air conditioner repeat operates

compressor) operation start. But after continue. Flashing stop and stop with interval of approx. 10

that, signal is stop some time. Outdoor unit and outdoor unit to 40 minutes.

Instantaneous power stop. start to operate Check protector (hardware) such

failure. when the return as Hi-Pressure switch,

Some protector signal from the Thermal-Relay, etc.

(hardware) of the outdoor unit is Check refrigerant amount, packed

outdoor unit open normal. valve opening and any possibility

circuit of signal. cause which may affect high

Signal circuit of indoor temperature or high pressure.

P.C. board or outdoor 3. Check operation signal of the indoor

P.C. board is failure unit by using diode. Measure voltage

in some period. at terminal block of the indoor unit

between No.2 and No.3 (or L2 and S)

If signal is varied 15-60V continuously,

replace inverter P.C. board.

If signal is not varied, replace indoor

P.C. board.

Action and Judgment

FILE NO. SVM-15058

–

82 –

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display

flashing error

Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the

Because of missed wiring, error is detected compressor, and operate again.

missed phase or shortage. 8 times*. 2. If outdoor fan does not operate or

operation but stop after some period,

replace the inverter P.C. board.

3. If outdoor fan operates normally,

measure 3-Phase output of inverter

P.C. board (150-270VAC) at the

connecting lead wire of compressor.

4. If 3-Phase output is abnormal, replace

inverter P.C.Board.

5. If 3-Phase output is normal, measure

resistance of compressor winding.

6. If winding is shortage, replace the

compressor.

Discharge temperature All OFF Flashes after 1. Check sensors TD.

exceeded 117

error is detected 2. Check refrigerant amount.

4 times*. 3. Check P.M.V. by measure the

resistance of the coil and confirm its

operation (sound of initial

operation, etc.)

4. Observe any possibility cause which

may affect high temperature of

compressor.

Compressor is high current All OFF Flashes after 1. Check installation conditions such as

though operation Hz is error is detected packed valve opening, refrigerant

decreased to minimum limit. 8 times*. amount and power supply (rate +

10%,

Installation problem. both of operation and non operation

Instantaneous power condition).

failure. 2. Check P.M.V. by measure the

Refrigeration cycle resistance of the coil and confirm its

problem. operation (sound of initial

Compressor break down. operation, etc.)

3. Observe any possibility cause which

may affect high current of compressor.

4. If 1, 2 and 3 are normal, replace

compressor.

Action and Judgment

FILE NO. SVM-15058

–

83 –

Compressor failure (High

current).operation, etc.)

FILE NO. SVM-15058

–

84 –

Block distinction Operation of diagnosis function

Check

code

Block

Check

code

Cause of operation

Air

conditioner

status

Display

flashing error

Action and Judgment

Indoor unit Flashes when 1.

. Check power supply (Rate +10%)

operates

error is detected

continue.

Flashing stop

Return signal of the outdoor

unit has been sent when

operation start. But after

that, signal is stop some time.

Outdoor unit

and outdoor unit

stop.

start to operate when the return signal from the outdoor unit is normal.

. If the air conditioner repeat operat

and stop with interval of approx. 10

to 40 minutes.

Check protector (hardware) such

as Hi-Pressure switch,

Thermal-Relay, etc.

Check refrigerant amount, packed

valve opening and any possibility

cause which may affect high

temperature or high pressure.

. Check operation signal of the indo

unit by using diode. Measure voltage

at terminal block of the indoor unit

between No.2 and No.3 (or L2 and S)

If signal is varied 15-60V continuously,

replace inverter P.C. board.

If signal is not varied, replace indoor

P.C. board.

4. Check and clean heat exchanger

area Indoor and Outdoor unit.

Instantaneous power

failure.

Some protector

(hardware) of the

outdoor unit open circuit

of signal.

Signal circuit of indoor

P.C. board or outdoor

P.C. board is failure in

some period.

TE, TC high tmperature

TE for cooling operation

TC for heating operation.

11 times*.

4, 8 or 11 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.

After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)

When error count comes 4, 8 or 11 times, record error to check code. But after re-starting operation, if no error

is detected and air conditioner can operate more than 6 minutes, error count is cleared.

11-5. Judgement of Trouble by Every Symptom

11-5-1. Indoor unit (Including remote controller) (1) Indoor unit is not operated.

(2) Operation is not turned on though Indoor P.C. board is replaced <Confirmation procedure>

Turn off power supply once, and 5 second later, turn it on again.

Is OPERATION indicator flashing?

Is it possible to turn on

A/C by pushing

[ ] button

on remote controller?

Is voltage

DC15V pin 4(+)

and pin 3(GND)

CN301?

Does transmission mark

on remote controller flash

normally,and is its signal

transmitted properly?

Does fan

motor connector

between CN301 1

–

3 short-circuit?

Item by symptoms

Operation

Check Item

Considerable principle cause

Measures

Remote controller is defective.

Refer to (5) “Troubleshooting for remote controller”.

Unit operates normally.

Replace main P.C. board

Replace fan motor.

Is fuse (F01)

of indoor control

board blown?

Microcomputer

is defective.

NO NO

YES

YES YES

YES

Point remote to digital

camera. Can see infrared

ray at sending LED

when push [ ] button?

Replace remote control

Does connection

between PC Board

and reciver PCB

Reconnect housing

on camera monitor

YES

are connect properly?

YES

To item of “Indoor unit is not operated”.

Turn on power supply.

Does OPERATION indicator flash?

Is wired correctly to white and

black lead wires of terminal block?

YES

Correct wiring

FILE NO. SVM-15058-1

- 85 -

(3) Only the indoor motor fan does not operate

1. Is it possible to detect the power supply voltage (AC220–240V) between

and

on the terminal block?

2. Does the indoor fan motor operate in cooling operation? (In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned on, to prevent a cold air from blowing in.)

Start to operate

indoor unit in cooling operation at airflow

level “LOW”.

Turn off indoor unit and remove connector from motor. Then start to operate indoor unit with remote controller.

Turn off indoor unit and remove

connector from motor. Then push [ ] button

on remote controller to stop

flashing lamp on indoor unit.

Change airflow level to “HIGH”.

Start to operate the

indoor unit in except

heating operation. At this time, is it possible to detect DC 1V or more

between

+ and 3 –

of motor connector (CN301)?

(Check this condition

within 15 seconds after

starting unit.)

Start to operate the

indoor unit in except

heating operation.

At this time, is it possible to

detect DC 1V or more between

5 + and 3 – of motor

connector (CN301)?

Is it possible to detect

DC 310–340V between

+ and 3 – of motor

connector (CN301).

(Motor connection condition)

Is it possible to detect DC 15V

between 4 + and 3 – of

motor connector (CN301).

Is it possible to detect

DC 15V between 4 +

and 3 – of motor connector (CN301).

Does indoor fan operate?

Replace main

P.C. board.

YES

Turn off power supply once, and turn it on again.

Is it possible to detect

DC 1V or more between

+ and

– of

motor connector (CN301)

Does fan motor

continue to operate?

Replace indoor

fan motor.

YES

Does check

operation LED flash?

Does check connecting

cable or power supply

cord complely?

interconnection cable and terminal block

YES

Does check

5V at display unit?

Replace

display unit

Does check 5V

at main P.C board?

Reconnecting the

YES

FILE NO. SVM-15058-1

- 86 -

Turn off indoor unit

and rotate cross-flow

fan by hand when the

unit is on standby.

At this time, is it possible to

detect DC 1V or more

between 5 + and 3 –

of motor connector

(CN

301).

Is it possible to

change airflow level

to “HIGH”?

Is it possible to

rotate cross-flow fan by

hand properly?

Fan motor operates normally.

Replace bearing of cross-flow fan.

YES

Does check cross-flow

fan bearing normal

condition?

Replace indoor

fan motor.

Peplace main

P.C. board.

Does check display

on remote show high?

Change the new PC

board. Does fan speed

change?

Replace remote

Replace motor

YES

FILE NO. SVM-15058-1

- 87 -

(4) Indoor fan motor automatically starts to rotate by turning on power supply

Indoor fan starts rotating when power supply is turned on.

(Check output DC voltage of fan motor on P.C. board.)

Measure voltage between 3 (GND : BLACK)

and 5 (V line : YELLOW) of motor connector (CN301)

while indoor fan motor is rotating.

DC 1.0V or more

P.C. board is defective.

6 (Blue) 5 (Yellow) 4 (White) 3 (Black) 2 – 1 (Red)

Motor is defective.

Under DC 1.0V

CN301

Yellow

Black

P.C. board

Replace P.C. board. Replace motor.

<Cause>

The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor. If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning

on power supply.

3.2.1. Remove the grille.

3.2.2. Remove the cover terminal by release one screw.

3.2.3. Remove right panel and remove E-box coner.

1. Turn on breaker.

2. After Fan motor operate, off A/C by remote controller.

3. Turn off breaker for a while, then turn it ON.

3.1. If fan motor not operate, it means an unit in Auto-restart operation. (see more detail in P. 45-46)

3.2. If Fan motor still operate, follow the below.

NOTE :

• Do not disconnect the connector while the fan motor is rotating.

• Use a thin test rod.

3.2.4. Check DC voltage with CN301 connector while the fan motor is rotating.

FILE NO. SVM-15058-1

- 88 -

(5) Troubleshooting for remote controller <Primary check>

Check that A or B selected on the main unit is matched with A or B selected on the remote controller.

Push the [ ] button.

Does the transmission

indicator blink?

YES

Is there direct

sunlight on the

receptor of the air

conditioner?

Avoid direct

sunlight.

Is there any

thyristor

fluorescent light

nearly?

Keep the air

conditioner away

from thyristor

fluorescent light.

NO NO

Is operation possible

when setting the temporary switch of the air conditioner main unit

to “TEST RUN” or

“TEMPORARY AUTO”?

Can any signal tone

be heard in a transistor

radio when transmitting

within 5 cm distance

from the radio?

P.C. board is failure.

Replace

P.C. board

Is operation

possible when the

transmitter is moved nearer to the infrared signal receiver of the

air conditioner?

Battery life

Replace the

batteries

Dose the

transmission

indicator light?

Is there any

beep and

operation?

Normal

Remote control

is failure.

Replace remote

control.

Push the [ ]

button

YES

There is no beep from the indoor unit

The OPERATION lamp of the air conditioner main unit does not light

Press RESET button

on remote control

with tip of pencil

FILE NO. SVM-15058-1

- 89 -

Refer to the chart in 11-6.

Gas leak P.M.V. is defective. Miswiring of connecting wires of indoor/outdoor units Clogging of pipe and coming-off of TC sensor

Gas circulation amount is down.

Measure gas pressure.

Gas shortage Gas leak Pipe clogging

Thermo. operation of compressor

Red

Blue

Terminal block

S5277G

Tester

Terminal block at indoor side

S5277G or equivalent (Diode with rated voltage of 400V or more is acceptable.)

To item of Outdoor unit does not operate.

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

(1) Outdoor unit does not operate

1) Is the voltage between R and S of the indoor terminal block varied? Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-

ing diagram.

NOTE:

• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.

• Be sure to prepare a diode for judgment.

Normal time : Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-8-1.)

Abnormal time : Voltage does not vary.

(2) Outdoor unit stops in a little while after operation started <Check procedure> Select phenomena described below.

1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to restart the unit.

2) If the unit stops once, it does not operate until the power will be turned on again.

3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed. (Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)

FILE NO. SVM-15058-1

- 90 -

YES

Gas leakage, disconnection of TS/TC sensors (Check code 02, 1C)

Discharge temp. error, gas leakage (Check code 03, 1E)

1C 1E

Gas amount check and valve clogging check

Remove TC sensor connector from the P.C. board in indoor unit. (Remove connector from the P.C. board.) Operate the air conditioner in COOL mode by RESET button on indoor unit (“Beep” sound is heard if keeping pushed RESET button for 10 seconds.). The operation enters temporary operation mode which fixes opening degree of compressor speed. Check condensation at outlet of PMV, and then check operating pressure from the service port.

Valve drive check

Check the operating pressure from service port, and add gas if pressure is low.

Is connecter of coil connected to inverter?

Is coil of the pulse motor valve

(P.M.V.) correctly set?

Existence of condensation at outlet of P.M.V.

If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),

the valve is clogged.

Are temp. sensors of indoor/outdoor units correctly set to the holder?

NOTE :

The temperature sensors which are used to control pulse motor valve include indoor heat exchanger sensor (TC), outdoor heat exchanger temp. sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).

Set it correctly.

Replace coil valve.

Replace valve.

Add gas.

Disconnect PMV connector then check coil resistance.

Is it 46±4Ω/Phase

(white-Red, Red-Orange, Yellow-Red, Blue-Red)?

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

FILE NO. SVM-15058-1

- 91 -

11-7. How to Diagnose Trouble in Outdoor Unit

YES

Turn ON the unit

by remote controller

and wait for 3 min.

Check component

parts of control board

assembly by visual.

(damage, burn,.. Etc.)

Check Power Supply

(Voltage Rate ±10%)

Replace fuse.

YES

Turn OFF power

supply.

Check 25A

fuse (F01)

failure?

Remove connector

of compressor.

Replace control board.

Check terminal

Voltage of electrolytic

capacitor are in

(Voltage Rate

Turn ON power

Supply.

±10%) x 1.414?

Replace control board.

(Cooling : 17°C)

•

Connect discharge resistance (approx. 100Ω, 40W) or soldering iron (plug) between +, – terminals of the electrolytic capacitor

(with printed CAUTION HIGH VOLTAGE) on P.C. board.

FILE NO. SVM-15058-1

- 92 -

YES

Does outdoor fan

operate normally?

Replace control

board.

YES

Compressor

is normal

Check voltage of the

compressor connector

(AC150V-270V)?

Turn ON power

supply.

Remove connector CN300 of

outdoor fan motor.

Check winding resistance by

ohmmeter are correct?

Check rotor locking by rotate

Turn OFF power

supply.

Replace outdoor

fan motor.

Replace

compressor.

Replace control

board.

Replace

compressor.

YES

Does compresser

operate normally?

with hand. Can it rotate?

Turn OFF power

supply.

Check compressor

winding resistance

correct?

is in rate.

YES

FILE NO. SVM-15058-1

- 93 -

Primary checkOperation c heck

Turn off the power breaker once, and turn on again after 10 seconds.

Does the OPERATION indicator flash?

Turn off the power breaker and remove CN401 (Micro switch connector). Short-circuit between and pin of CN401 at PC side, and turn on the power breaker after 10 seconds.

1) Check operation while short-circuiting CN401 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on the reactivation preventive timer and all display indicators go on for approx. 3 seconds when a signal is received. If time on the reactivation preventive timer is not shortened, the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed. (Because the power ON/OFF is controlled on the program)

3) Be sure not to touch the electric dust collector, ionizer, or ionized wire unit with the human body.

Is there conduction of

micro-switch connector under

OFF status of the micro-switch

(Front panel opened)?

Is there conduction of micro-switch connector under ON status of the micro-switch

(Front panel closed)?

Does the indoor fan rotate?

Does the PURE indicator (white)

go on?

Short Timer and then check,

Is DC12V applied between (DC12V)

(GND) of CN1 of the

high-voltage generator?

Is DC12V applied

between (+) and (–)

of CN402 of the main

P.C. board ?

Micro-switch is stuck

Micro-switch malfunction

To item “Power supply is not turned on”

Replace the main P.C. board.

Replace micro-switch.

Are the electric dust

collector and ionizer dried?

(Electrode check)

Dry the electric dust collector and ionizer.

Is output of the ionizer

approx. -5.7 kV to -6.5 kV?

Is output of the collector

approx. -2.7 kV to -3.4 kV?

Are the electric dust

collector/ionizer/ionized

wire units dirty?

Is an abnormal sound

(cracking noise) heard

from the electrode?

Referring to the right figure, check the high-output voltage of the air filter unit. (NOTE) Use an exclusive high voltage tester; otherwise the tester may be broken.

No trouble

Check High Voltage output Short to GND?

Replace the high-voltage generator.

To item “Only indoor fan does not operate”

YES

NO NO

YES

( )

Refer to items, cleaning and check for the electric dust collector/ionizer/ ionized wire units. When the ionized wire is disconnected or when dirt is not cleaned even cleaned,

replace each unit.

• Conduction check of micro-switch

Tester

• How to check output of the air purifier <Caution on High Voltage!!>

1 2

Push the switch

Release the switch

OFF

Be sure not to come to contact to the gray part or not to touch the ionized cables.

11-8. Troubleshooting

11-8-1. How to Check Whether the Air Purifier and Minus Ion Gerneration are Good or NG

Is DC-5V to DC-10V

applied between

(Negative voltage)

and (GND)

of CN402 of the main

P.C. board?

FILE NO. SVM-15058-1

- 94 -

(2) Inspection procedures

1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the copper foil pattern or this P.C. board.

2) The P.C. board consists of the following 3 parts

a. Main P.C. board part:

DC power supply circuit (5 V, 12 V, 15V) Indoor fan motor control circuit, CPU and peripheral circuits, buzzer, and Driving circuit of louver.

b. Indication unit circuit c. Infrared ray receiving circuit

11-9. How to Check Simply the Main Parts

11-9-1. How to check the P.C. board (Indoor unit)

(1) Operating precautions

1) When removing the front panel or the P.C. board, be sure to shut off the power supply breaker.

2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.

3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing. Do not pull at the lead wire.

11-9-2. How to shorten time for start the compressor.

1. Turn on remote.

2. Setting requirment operation.

3. Push off remote.

This setting helps to shortern a compressor waiting period when operate cool, heat or dry mode. A compressor suddenly starts one order of Remote controller is received.

4. Press [SET] button while pressing [CHECK] button with a tip of a pencil.

5. Then press [ ] button to transmit the signal to the

indoor unit.

PRESET

TEMP

FILE NO. SVM-15058-1

- 95 -

11-9-2. P .C . Board Layout

100

20 10

0102030 4050

Resistance value (k )

Temperature (˚C)

TD : Discharge temp. sensor TA : Room temp. sensor TC and TCJ : Heat exchanger temp. sensor TO : Outdoor temp. sensor TE : Outdoor heat exchanger temp. sensor TS : Suction temp. sensor

TA,TC,TCJ,TO,TE,TS

[1] Sensor characteristic table

GND

+5V

+12V+15V

FILE NO. SVM-15058-1

- 96-

11-9-3. Indoor Unit (Other Parts)

11-9-4. Outdoor Unit

No.

Part name

Room temp. (TA) sensor Heat exchanger (TC,TCJ)

Checking procedure

Disconnect the connector and measure the resistance value with tester. (Normal temp.)

Temperature

Sensor

TA, TC, TCJ (kΩ)

10°C20°C25°C30°C40°C

20.7 12.6 10.0 7.9 4.5

White Yellow Yellow Yellow Yellow

Refer to 11-5-1. (5). Measure the resistance value of each winding coil by using the tester.

(Under normal temp. 25°C)

Position

1 to 2 1 to 3 1 to 4 1 to 5

Resistance value

200 ± 14Ω

Refer to 11-5-1. (3) and (4).

23Remote controller

Louver motor

MP24Z4N

4 Indoor fan motor

sensor

No. Part name Checking procedure

Compressor Model : DA108X1C-23FZ (RAS-10, 13) Model : DA131S1B-31FZ (RAS-18)

Measure the resistance value of each winding by using the tester.

Position

Resistance value

DA108X1C-23FZ

DA131S1B-31FZ

Red - White

0.88 to 0.98Ω 0.92 to 1.02ΩWhite - Black

Black- Red

Under 20°C

2 Outdoor fan motor

(Model : ICF-140-43-4R)

Measure the resistance value of winding by using the tester.

Red

Position Resistance value

Red - White 20 to 22Ω

White - Black 20 to 22Ω

Black- Red 20 to 22Ω

Under 20°C

3 Pulse motor valve coil

Model : CAM-MD12TCTH-5

Measure the resistance value of winding by using the tester.

Model : CAM-MD12TCTH-5

Position Resistance value

Red - White 43 to 49Ω

White - Orange 43 to 49Ω

Brown- Yellow 43 to 49Ω

Brown- Blue 43 to 49Ω

Under 20°C

4 Outdoor temperature sensor (TO),

discharge temperature sensor (TD), suction temperature sensor (TS).

Disconnect the connector, and measure resistance value with the tester. (Normal temperature)

Temperature

Sensor

10°C 20°C 25°C 30°C 40°C 50°C

TD (kΩ) 100 62 50 41 27 18

TO,TS (kΩ) 20.7 12.6 10.0 7.9 4.5 —

Red

White Black

COM

254

R BL

1 6

FILE NO. SVM-15058-1

- 96 -

11-9-5. Checking Method for Each Part

No. Part name Checking procedure

1 Electrolytic capacitor

(For boost, smoothing)

1. Turn OFF the power supply curcuit breaker.

2. Discharge all three capacitors completely.

3. Check that safety valve at the bottom of capacitor is not broken.

4. Check that vessel is not swollen or exploded.

5. Check that electrolytic liquid does not blow off.

6. Check that the normal charging characteristics are shown in continuity test by the tester.

MCC-5009 Soldered surface

Heat sink IGBT side

C12 C13 C14

Case that product is good

Pointer swings once, and returns slowly. When performing test once again under

another polarity , the pointer should return.

C12, C13, C14 : 500µF/400V

2 Diode block 1. Turn OFF the power supply breaker.

2. Completely discharge the three electrolytic capacitors.

3. Remove the diode block from the P.C. board (which is soldered in place).

4. Use a multimeter with a pointer to test the continuity, and check that the diode block has the proper rectiﬁcation characteristics.

~ ~

+–

21 3 (DB01)

–

FILE NO. SVM-15058-1

- 98 -

Resistance value

in good product

∞

Tester rod

+ –

–

10 to 20 Ω when the multimeter probe is reversed

11-10. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

1. Symptom

• Outdoor fan motor does not rotate.

• Outdoor fan motor stops within several tens seconds though it started rotating.

• Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc. Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”

2. Cause

The following causes are considered when the outdoor fan motor does not normally rotate.

1) Mechanical lock of the outdoor fan motor

2) Winding failure of the outdoor fan motor

3) Position-detect circuit f ailure inside of the outdoor fan motor

4) Motor drive circuit failure of the outdoor P.C. board

3. How to simply judge whether outdoor fan motor is good or bad

NOTE :

However, GND circuit error inside of the motor may be accepted in some cases when the above check is performed.

When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.

If the resistance value between 1 (Red lead) – 2 (White lead) 2 (White lead) – 3 (Black lead) 3 (Black lead) – 1 (Red lead)

of the connector (CN300 : Motor winding)

is 20 to 22W .

Turn OFF the breaker.

Fan motor is normal.

Does the fan rotate without trouble

when rotating it with hands?

Disconnect two connectors (CN300) of the

outdoor fan motor from the outdoor P.C. board.

(Outdoor P.C. board error)

Fan motor error

YES

CN300

FILE NO. SVM-15058-1

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12. HOW TO REPLACE THE MAIN PARTS

WARNING

• Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs.

Electric shocks may occur if the power plug is not disconnected.

• After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.

If this check is omitted, a fire and/or electric shocks may occur. Before proceeding with the test run, install the front panel and cabinet.

• Ensure that the following steps are taken when doing repairs on the refrigerating cycle.

1. Do not allow any naked flames in the surrounding area.

If a gas stove or other appliance is being used, extinguish the flames before proceeding. If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.

2. Do not use welding equipment in an airtight room.

Carbon monoxide poisoning may result if the room is not properly ventilated.

3. Do not bring welding equipment near flammable objects.

Flames from the equipment may cause the flammable objects to catch fire.

• If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir-

cuitry, wear rubber gloves to avoid contact with the live parts.

Electric shocks may be received if the live parts are touched. High-voltage circuits are contained inside this unit.

Proceed very carefully when conducting checks since directly touching the parts on the control circuit board may result in electric shocks.

12-1. Indoor Unit

Front panel 1)) Stop operation of the air conditioner

and turn off its main power supply.

2)) Open the air inlet grill, push the arm toward the outside, and remove the grill.

3))

Remove the left and the right air filters.

4)) Remove the fixing screws (5 pcs.)

5))

Open LOUVER-HR as the picture after that pull out PANEL-FR(R) and PANEL-FR(L).

No. Part name Work procedure Remarks

5 Screws

FILE NO. SVM-15058-1

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Toshiba RAS-13G2KCVP-T, RAS-10G2KCVP-T, RAS-18G2ACVP-T, RAS-18G2KCVP-T, RAS-10G2ACVP-T Service Manual

Specifications and Main Features

Frequently Asked Questions

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