Samsung AQT12WHWE, UQT12WHWE, AQT12WHWB Service Manual

ROOM AIR CONDITIONER

INDOOR UNIT

AQT12WHWE

AQT12WHWBUQT12WHWB

SERVICE

OUTDOOR UNIT

UQT12WHWE

Manual

CONTENTSAIR CONDITIONER

1. Product Specifications

2. Disassembly and Reassembly

3. Refrigerating Cycle Diagram

4. Set Up Model Option

5. Troubleshooting

6. Exploded Views and Parts List

7. Block Diagram

8. Wiring Diagram

9. Schematic Diagram

1. Product Specifications

1-1 Table

Item

Type

Capacity

Dehumidifying

Perfor-

Heat Exchanger

Refrigerant Control Unit

Freezer Oil Capacity

Refrigerant to Charge(R22)

Protection Device(OLP)

Cooling Test Condition

Maximum Operation Condition

Air Volume

mance

Noise

Eenergy Efficiency Ratio

Power

Power Consumption

Operating Current

Power

Power Factor

Staring Current —

Power Cord

Weight

Refrigerant Pipe

Drain Hose

Size

Compressor

Blower

Cooling

Heating

SASO

Cooling

Heating

SASO

Cooling

Heating

SASO

Cooling

Heating

SASO

Cooling

Heating

SASO

Length

Number of Core Wire

Capacity

W×H×DOuter Dimension

Liquid mm×L(m)

Gas mm×L(m)

Type

Motor

Rated Output

Type

Motor

Rated Output

Model

BTU/h

l/h

m3/h 8.5/9.5 25.0 8.5/9.5 25.0

dB 43 55 43 55

BTU/W·h

V-Hz

mm 825×258×189 720×548×265 825×258×189 720×548×265

32.4

inch

D×L(m)

W — — — —

2ROW 14STEP 2ROW 24STEP 2ROW 14STEP 2ROW 24STEP

INDOOR UNIT：DB27˚C WB19˚C OUTDOOR UNIT：DB35˚C WB24

INDOOR UNIT：DB32˚C WB23˚C OUTDOOR UNIT：DB43˚C WB26

AQT12WHWB

Indoor unit Outdoor unit Indoor unit Outdoor unit

Wall-mounted Wall-mounted

12,000 12,000

13,000

10,500 —

1.0 1.0

10.0

10.5

7.45

1-220-60

1,200

1,240

1,410

5.5

5.7

6.5

98.4

94.6

98.6

—

250V-10/16A

×10.1×7.42 28.3×21.6×10.4

8.4 33.5

ø6.35 X 5

ø12.7 X 5

ø18.0 X 2，000

Rotary

— — — —

Cross-flow Propeller Cross-flow Propeller

steel steel steel steel

CAPILLARY TUBE

—

960

RBC12107-12500

32.4

AQT12WHWE

13,000

10.0

11.0

—

1-220/240-50

1,200

1,180

—

5.3

5.2

—

98.4

98.7

—

250V-10/16A

×10.1×7.42 28.3×21.6×10.4

8.4 33.5

ø6.35 X 5

ø12.7 X 5

ø18.0 X 2，000

Rotary

CAPILLARY TUBE

—

870

RBC12050-12500

˚C

1Samsung Electronics

2. Disassembly and Reassembly

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

2-1 Indoor Unit

No Parts Procedure Remark

1 Front Grille

1) Stop the air conditioner operation and block the main power.

2) Open the Front Grille by pulling right and left sides of the hook.

3) Loosen 1 of the right screw and detach the Terminal Cover.

4) Detach the thermistor from the Front Grille.

5) Loosen 2 fixing screws of Front Grille.

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Disassembly and Reassembly

No Parts Procedure Remark

6) Unlock 2 hooks to fix Panel Front and Tray Drain.

7) Unlock 3 hooks to fix Panel Front and Back-Body.

Control-In

(Main PCB)

Tray Drain

1) Take all the connector of PCB upper side out. (Inclusion Power Cord)

2) Detach the outdoor unit connection wire from the Terminal Block.

3) Loosen 4 fixing screws of Ass'y Control-In.

1) Pull Tray Drain out from the Back Body.

3Samsung Electronics

Disassembly and Reassembly

No Parts Procedure Remark

Heat Exchanger

1) Loosen 2 fixing earth screws of right side.

2) Detach the Connection Pipe.

3) Detach the Holder Pipe at the rear side.

4) Loosen the 3 fixing screws of right and left side.

5) Lifting the Heat Exchanger up a little to push the up side for separation from the indoor unit.

Fan Motor

Cross Fan

1) Loosen the fixing screw and detach the Motor Holder.

2) Detach the Fan Motor from the Fan.

3) Detach the Fan From the left Holder Bearing.

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2-2 Outdoor Unit

No Parts Procedure Remark

1 Common Work

1) Loosen each 3 fixing screws on both right and left Cabinet-Side edge and a fixing screw on the Cabinet-Front lower to detach the Cabinet-Front.

2) Loosen 2 fixing screws of the Ass'y-Control.

3) Loosen 6 fixing screws of the Cabinet-Side RH.

4) Loosen 2 fixing screws of the Cabinet-Side LF.

5Samsung Electronics

Disassembly and Reassembly

No Parts Procedure Remark

5) Loosen 1 fixing Cable-Tie of the Cabinet-Side LF.

Fan

Exchanger

Heat

& Motor

1) Detach the Nut Flange.(Turn counterclockwise

because the screw is right-handed)

Detach the Fan.

3) Loosen 4 fixing screws to detach

Motor.

the

1) Loosen 2 fixing screws on both sides.

2) Disassemble the pipe in both inlet and

with welding torch.

outlet

3) Detach the Heat Exchanger.

Compressor

1) Loosen the Terminal Cover nut to open the Terminal

2) Disassemble the cloth sound felt.

3) Disassemble the pipe in both inlet and outlet torch.

Disassemble the pipe in both inlet and

outlet

Loosen the 3 bolts at the bottom.

Detach the Compressor.

Cover.

of the Compressor with welding

of the Condenser with welding torch.

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Cooling Heating

Gas Leak Check Polnt

3. Refrigerating Cycle Diagram

3-1 Refrigerating Cycle Diagram

Indoor Unit

Heat Exchanger (Evaporator)

Outdoor Unit

Liquid side

Cross fan

Gas side

2-Way valve

3-Way valve

Capillary tube

✳Note

Check valve

Capillary tube

Heat Exchanger (Evaporator)

Propeller fan

4-Way valve

Compressor

7Samsung Electronics

4. Set Up the Model Option

4-1 Setting Option Setup Method

ex) Option No. :

Step 1 : Enter the Option Setup mode.

Take out the batteries of remote control.

Press the temperature button simultaneously and insert the battery again.

Make sure the remocon display shown as .

Step 2 : Enter the Option Setup mode and select your option according to the following procedure.

Feature Display

Setting Option SEG1. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

repeatedly.

Setting Option SEG2. Push the button to set the display panel to . Every time you push the button, the display panel reads

1,4 2,5

. . .

Change it into the set display of Option SEG3 and SEG4 with the button.

repeatedly.

Setting Option SEG3. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

Setting Option SEG4. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

repeatedly.

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Feature Display

6,9

7,10 8,11

13 14

Change it into the set display of Option SEG5 and SEG6 with the button.

Setting Option SEG5. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

Setting Option SEG6. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

Change it into the set display of Option SEG7 and SEG8 with the button.

Set Up the Model Option

repeatedly.

Setting Option SEG7. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

Setting Option SEG8. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

Change it into the set display of Option SEG9 and SEG10 with the button.

Setting Option SEG9. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

Setting Option SEG10. Push the button to set the display panel to . Every time you push the button, the display panel reads

. . .

repeatedly.

9Samsung Electronics

Set Up the Model Option

Step 3 : Upon completion of the selection, check you made right selections.

Whenever you press the button, the set Option will be displayed.

Step 4 : Pressing the ON/OFF button ( )

When pressing the operation ON/OFF key with the direction of remote controller for unit, the sound "Ding" is heard and the OPERATION LED lamp is flickering at the same time, then the input of option is completed. (If the "ding" sound isn't heard, try again pressing the ON/OFF button.)

Step 5 : Unit operation test-run

First, Remove the battery from the remote controller. Second, Re-insert the battery into the remote controller. Third, Press ON/OFF ( ) key with the direction of remote controller for set.

• Error Mode

If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry.

If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model.

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