Samsung AQ18A9(0)RCF Manuel utilisateur

SERVICE Manual

SPLIT TYPE AIR CONDITIONER

AQ18A9(0)RCF

AQ24A1(2)RC

Indoor Unit UQ18A9(0)RCF

UQ24A1(2)RC

Outdoor Unit

EDB98-15778A(2)

AQ18A5(6)RC SM_E_15778 2/14/04 2:47 PM Page 43

The following safety precautions must be taken when using your air conditioner.

WARNING

Risk of electric shock. • Can cause injury or death. • Disconnect all remote electric

power supplies before servicing, installing or cleaning. • This must be done by the

manufacturer or its service agent or a similar qualified person in order to avoid a

hazard.

Safety Precautions

◆The unit should not be installed by the user. Ask the dealer or authorized

company to install the units except room air conditioners for the U.S.A and

Canada area.

◆If the unit is installed improperly, water leakage, electric shock or fire may

result.

◆The air conditioner must be installed in accordance with national wiring

regulations and safety regulations wherever applicable.

◆Mount with the lowest moving parts at least 8.2ft(2.5m) above the floor or

grade level. (If applicable)

◆The manufacturer does not assume responsibility for accidents or injury

caused by an incorrectly installed air conditioner. If you are unsure about

installation, contact an installation specialist.

◆When installing the built-in type air conditioner, keep all electrical cables

such as the power cable and the connection cord in pipe, ducts, cable

channels e.t.c to protect them against liquids, outside impacts and so on.

NSTALLING THE UNIT

◆If the power cord of this air conditioner is damaged, it must be replaced by

the manufacturer, its service agent or similarly qualified persons in order to

avoid a hazard.

◆The unit must be plugged into an independent circuit if applicable or

connect the power cable to the auxiliary circuit breaker. An all pole

disconnection from the power supply must be incorporated in the fixed

wiring with a contact opening of >3mm.

◆Do not use an extension cord with this product.

◆If the unit is equipped with a power supply cord and a plug, the plug must

be accessible after installation.

◆This appliance must be installed accordance with the national wiring

regulations.

POWER SUPPLY LINE,

FUSE OR CIRCUIT

BREAKER

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 2

AIR CONDITIONER

SPLIT TYPE

Contents

DISASSEMBLE AND REASSEMBLE

1. Indoor unit

2. Outdoor unit 4

TROUBLESHOOTING

1. Items to be checked first

2. Abnormal diagnosis by symptom

3. Replace PCB module

ASSEMBLY DRAWING AND PART’SLIST

1. Indoor unit

2. Outdoor unit

3. PCB Box

WIRING DIAGRAM

1. Indoor unit

2. Outdoor unit 38

SCHEMATIC DIAGRAM

1. Indoor unit 41

REFRIGERATING CYCLE BLOCK DIAGRAM 29

SET UP THE OPTION CODE 12

ΙΙ

ΙΙΙ

ΙΛ

ΛΙΙΙ

ΙΧ

PERFORMANCE CURVE 30

PCB DIAGRAM 36

ΙΙ

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 3

Disassemble and reassemble

1 Indoor unit

Stop operation of the air conditioner and remove the power cable before repairing the unit.

No. Part Procedure Remark

Front Panel

11) Stop the operation of the air conditioner

and block the main power.

2)Separate the tape from the front panel.

3)Contract the second finger to the left,

and right handle. And pull the inlet grille

to open.

4)Take the left and right filter out.

5)Loosen one of the right screw and

separate the terminal cover.

6)Loosen three screws of front grille.

*Taking off the deodorizing and

Electrostatic filter out. (Option)

If you disassemble the heat exchanger, you must pump down at first.

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 4

No. Part Procedure Remark

Assembly Tray

Drain

21) Separate the drain hose from the

extension drain hose.

2) Take the display PCB out.

(Center of the indoor unit)

3) Pull tray drain out from the back body.

7)Pull the upper left and right of discharge

softly so that the outside cover is

pulled out.

8)Pull softly the lower part of discharge and

push it up.

Caution

Assemble the front panel and fix the

hooks of left and right.

Front Panel

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 5

Disassemble and reassemble (cont’d)

No. Part Procedure Remark

Electrical

Parts

(Main PCB)

Heat

Exchanger

1) Take out all the connector of PCB

on the upper part.

2) Separate the outdoor unit connection wire

from the terminal block.

3) If you pull out the main PCB up, it will be

taken out.

1) Loosen two ground screws at the right

side.

2) Separate the connection pipe.

3) Separate the bush body at the upper

side and holder at the rear side.

4) Loosen the two screws at the left side.

5) Lift the heat exchanger up a little to push

the upper side to separate it from the

indoor unit.

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 6

No. Part Procedure Remark

Fan Motor and

Cross Fan

51) Loosen two screws and separate the

motor holder.

2) Loosen the screw of fan motor.

(By use of M3 wrench)

3)Separate the fan motor from the fan.

4)Separate the fan from the left holder

bearing.

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 7

Disassemble and reassemble (cont’d)

2 Outdoor unit

No. Part Procedure Remark

Common Work

11)Loosen the fixing screws and separate

the cover control.

2)Separate the connection wire from the

terminal block.

3)Loosen the fixing screws and separate

the upper cabinet.

4) Loosen the fixing screws and separate

the front cabinet.

5) Loosen two screws and pull up the

control box.

6) Loosen the nut on the terminal cover

and open it.

7)Separate the comp lead wire.

■ UQ18A9(0)RCF

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 8

No. Part Procedure Remark

Common Work

8)Loosen the fixing screws and separate

the cabinet side.

1) Remove the nut flange

(Turn to the clockwise).

2) Separate the fan.

3) Loosen four screws to separate

the motor.

1) Release the refrigerant at first.

2) Disassemble the inlet and outlet pipe-

by welding.

3) Loosen the fixing screws of the heat

exchanger.

4) Separate the heat exchanger.

5) Loosen three bolts of the compressor.

6) Separate the compressor.

Fan and Motor

Heat Exchanger

and Compressor

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 9

No. Part Procedure Remark

Common Work

11)Loosen the fixing screws and separate

the cover control.

2)Separate the connection wire from the

terminal block.

3)Loosen the fixing screws and separate

the upper cabinet.

4) Loosen the fixing screws and separate

the front cabinet.

5) Loosen three screws and pull up the

control box.

6) Separate the terminal cover and

separate the comp lead wire.

■ UQ24A1(2)RC

Disassemble and reassemble (cont’d)

AQ18A5(6)RC SM_E_15778 2/12/04 9:10 PM Page 10

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