AWH-090ZE/front 6/22/98 3:18 PM Page 1

ROOM AIR CONDITIONER

AWH090ZE0K

SERVICE Manual

AIR CONDITIONER CONTENTS

1. Precautions

2. Product Specifications

3. Installation and Operating

Instructions

4. Disassembly and Reassembly

5. Troubleshooting

6. Exploded Views and Parts List

7. Block Diagram

8. Wiring Diagram

AWH-090ZE/front 6/22/98 3:18 PM Page 2

ELECTRONICS

©

Samsung Electronics Co., Ltd. JAN. 1998.

Printed in Korea.

Code No. DB81-10137A(1)

AWH-090ZE-1 6/22/98 2:11 PM Page 1

1. Precautions

1. Warning: Prior to repair, disconnect the power cord from the circuit breaker.

2. Use proper parts: Use only exact replacement parts. (Also, we recommend replacing parts rather than repairing them.)

3. Use the proper tools: Use the proper tools and test equipment, and know how to use equipment may cause problems laterintermittent contact, for example.

4. Power Cord: Prior to repair, check the power cord and replace it if necessary.

5. Avoid using an extension cord, and avoid tapping into a power cord. This practice may result in malfunction or fire.

6. After completing repairs and reassembly, check the insulation resistance, Procedure:

Prior to applying power, measure the resistance between the power cord and the ground terminal. The resistance must be greater than 30 megohms.

7. Make sure that the grounds are adequate.

8. Make sure that the installation conditions are satisfactory. Relocate the unit if necessary.

9. Keep children away from the unit while it is being repaired.

10. Be sure to clean the unit and its surrounding area.

Fig. 1-1 Avoid Dangerous Contact

Fig. 1-2 No Tapping and No Extension Cords

Fig. 1-3 No Kids Nearby!

Samsung Electronics

Fig. 1-4 Clean the Unit

1-1

AWH-090ZE-1 6/22/98 2:11 PM Page 3

2. Product Specifications

2-1 Table

Item

Type

Dimensions:

(Width X Height X Depth)

Packing Size

(Width X Height X Depth)

Voltage:

Phase

Frequency

Operating Current

Power Consumption

Refrigerant Type

Refrigerant Charge

Capacity

EER

Net Weight

Condenser

Condenser Fan

Evaporator

Evaporator Fan

Fan Motor

Compressor(Rotary)

Overload Protect

Compressor Capacitor

Fan Motor Capacitor

Fan Speed Control

Thermo Control

Unit of Measure

mm mm

BTU/h

BTU/h.W

kg

Row

Type

Row

Type

Volt

-

Hz

A

W

FREON g

W

Model

-

µF/ VAC

µF/ VAC

-

-

AWH090ZE(COOL/HEAT)

Window

520 X 345 X 515

580 X 445 X 580

220 ~ 240

Single

50

4.3 / 3.8

1,020 / 860

R-22

510

8,500 / 8,500

8.3 / 9.7

36

2 X 13

Propeller Fan

2 X 12

Blower

AMAFS-040AXEA

44H092JW1E4

MRA12037-12007

30 / 370

(DUAL)

3 / 370

Fan speed switch (High & Low)

Thermostat

Remarks

Samsung Electronics 2-1

AWH-090ZE-1 6/22/98 2:11 PM Page 4

2-2 Dimensions

2-2-1 Main Unit

Front view

520

Side view

Unit : mm

2-2 Samsung Electronics

AWH-090ZE-1 6/22/98 2:11 PM Page 5

3. Installation and Operating Instructions

3-1 Installation

* When selecting the area for installing the unit, be sure to obtain approval of the customer.

1. Make sure that you install the unit in an area that provides good ventilation.

The air conditioner must not be blocked by any obstacle affecting the air flow near the air inlet and air outlet.

6. Make sure that you install the unit in an area which provides easy drainage for condensed water.

2. Make sure that you install the unit in an area which can endure the weight and vibration of the unit.

7. Make sure that you install the unit in an area not exposed to rain or direct sunlight.

(Install a separate sunblind if exposed to direct sunlight.)

3. Make sure that you install the unit away from heat or vapor.

4. Make sure that you install the unit in an area where the cooled(heated) air can be evenly spread in a room.

5. Make sure that you install the unit in an area away from TVs, audio units, cordless phones, fluorescent lighting fixtures and other electrical appliances.

(obtain a clearance of at least one meter)

8. Do not install the unit in an area subjected to noise or vibration amplification which may affect your neighbor.

(Fix the unit firmly if mounted in a high place.)

Caution:

Do not use the air conditioner in such areas as a greasy area(including machine oil), saline area(sea side), or sulphuric area(hot spring). When using the air conditioner in these areas, special maintenance is required. Contact your local dealer or our service center for advice.

Samsung Electronics 3-1

AWH-090ZE-1 6/22/98 2:11 PM Page 6

3-2 Function Description

Operation control Thermostat control

3-2-1 Operation control

(1) COOL MODE(BLUE POSITION) :

The air conditioner starts cooling, provided that the room temperature is higher than the selected temperature.

• ( HI COOL) : The fan turns rapidly.

• (LOW COOL) : The fan turns slowly.

• Thermostat control in cool mode.

Left end : COOL air will be supplied above 30 ~ 35˚C

COOL air will be ceased below 28 ~ 32.5˚C

Right end : COOL air will be supplied above 17.4 ~ 20.4˚C

COOL air will be ceased below 14.4 ~ 17.4˚C

(2) HEAT MODE(RED POSITION) :

The air conditioner starts heating, provided that the room temperature is lower than the selected temperature.

• ( HI HEAT) : The fan turns rapidly.

• (LOW HEAT) : The fan turns slowly.

• Thermostat control in heat mode.

Left end : HEAT air will be supplied below 14.4 ~ 17.4˚C

HEAT air will be ceased above 17.4 ~ 20.4˚C

Right end : HEAT air will be supplied below 28 ~ 32.5˚C

HEAT air will be ceased above 30 ~ 35˚C

• DEICE function in heat mode :

Deice operation is controlled by sensing the condenser heat exchange temperature and timer.

✻ Deice time is about 5 minutes.

✻ Operating the deice, the air conditioner starts cooling cycle and then the fan stops.

✻ Deice operation

3-2 Samsung Electronics

AWH-090ZE-1 6/22/98 2:11 PM Page 7

COND SENSOR TEMP(DEICE THERMOSTAT)

8 ° C

-3

°

C

TIME

Deice time(about 5 min)

COMP

ON

FAN

4WAY V/V

AIR SWING

ON

OFF

ON

OFF

(ON TIME)

50 min

OFF

(OFF TIME) (1.5 min)

OFF

TIMER

DEICE ON DEICE OFF

(3) FAN MODE ( )

The fan mode controls dehumidify, filter and circulate room air, with the fan continuing to circulate air while the compressor is turned off. The fan turns only high speed.

3-2-2 Air swing switch(Option)

On ( ) :

Automatic ventilation distributes the air flow throughout the room.

(controls the right and left blade-V)

OFF ( ) :

- Maintain a fixed direction of air flow.

Set the air swing switch to OFF the instant the blade-V come to the desired positioner.

- When the air conditioner starts up in deice mode automatically, the swing of blade is stopped for a moment and the deice operating is stopped, the swing of blade operates again.

3-2-3 Ventilation switch

Use the ventilation switch when you want to exhaust unfresh air.

Open position : The air inside the room circulates while exhausted is sent outside.

Closed position : The air inside the room circulates without exhaust

Open

Position

Closed

Position

Samsung Electronics 3-3

AWH-090ZE-1 6/22/98 2:11 PM Page 9

4. Disassembly and Reassembly

4-1 Compressor Replacement Flow Chart

Locate cause of defect

Release refrigerant

Disconnect electrical wiring from compressor

Cut refrigerant lines from compressor

Plug disconnected lines

Replace compressor

Y

Inspect electrical wiring for defects, and terminals for correct and secure connections

Solder discharge line Solder suction line

Problem?

N

Use nitrogen gas

Corrective action

Samsung Electronics

Y

Add oil as necessary

Check refrigerant oil level

Low oil level?

N

Perform soldering function

Fill system with nitrogen gas

Check for leakage

Leakage?

Y

N

Release nitrogen gas?

Evacuate system

Recharge system

Recharge system

4-1

AWH-090ZE-1 6/22/98 2:11 PM Page 10

4-2 Checking the oil

Fill the transparent container with 10cc of oil, and then conduct the test.

4-2-1 Oil quality

Refrigerant Cycle

Normal

Over-heated

Compressor damage

Color

Light Yellow

Brown

Dark brown

Oil Condition

Odor

No Odor

-

Pungent oil

4-2-2 Replacing and refilling the refrigerant oil

1. Replacing the compressor - Do not fill the system with oil as the compressor is already charged.

2. Replacing the condenser - Refill 50cc.

3. Replacing the evaporator - Refill 50cc.

4. Replacing the refrigerant - Refill 30cc.

5. The high pressure side is filled up with oil after the vacuum is completed.

6. When the refrigerant leaks, it is generally not necessary to refill the oil if the leakage is not severe.

Remarks

Return with the system

Oil Change

Oil Change

4-2 Samsung Electronics

AWH-090ZE-2 6/22/98 2:12 PM Page 1

4-3 Disassembly and Reassembly Procedure

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

No.

①

Part name

Ass'y-Grill

Procedures

1. Pull out the Guard-air filter on the grille.

Remarks

2. Remove the Screw on the grille.

3. Push the grille left side and pull up.

4. Pull out the Seal-cabi front between Base pan and Cabinet.

➁

Ass'y-Frame 1. Remove the 2 screws both side of the cabinet .

2. Pull the handle at the Base pan to separate the frame from the Cabinet.

Samsung Electronics 4-3

AWH-090ZE-2 6/22/98 2:12 PM Page 2

Disassembly and Reassembly

No.

➂

Part name

Ass’y-Control

& Ass’y-Frame

Blade

Procedures

1. Remove the Cover-Evap.

2. Remove the 3 screws to disassmble

Ass’y-control and Frame-blade.

3. Separate 3 Ass’y-lead wires from the

Ass’y-control and the deice sensor from the condenser.

Remarks

➃

Ass’y-Condenser 1. Remove the 2 screws back of the Base pan.

2. Remove the 5 screws both side of the

Casing cond and on the Base pan.

➄ Ass’y-Evaporator 1. Remove the 2 screws front of the Partition-

Evap. casing and 2 screws left side of the

Evaporator.

4-4 Samsung Electronics

AWH-090ZE-2 6/22/98 2:12 PM Page 3

No.

➅

Part name

Blower-Fan

Procedures

1. Remove the Cover-Evap. case.

2. Loosen the hex. bolt to disassemble the blower.

3. Remove the 2 screws left side of the

Partition-Evap. casing.

➆ Propeller Fan 1. Loosen the Nut flange.

Disassembly and Reassembly

Remarks

⑧

Motor 1. Remove the 4 hex. bolts on the partition and Base pan.

2. Remove the Screw on the Base pan.

Samsung Electronics 4-5

AWH-090ZE-2 6/22/98 2:12 PM Page 5

5. Troubleshooting

1

2

Procedures

Check to see whether the electric circuit or electric parts are damaged before repairing the air conditioner.

Conduct the following generally to check whether the electric circuit or other electric parts are damaged.

5-1 Troubleshooting Method and Precautions

5-1-1 Checking of power source

Check to see whether the voltage of the power source is 220 ~ 240V, 50Hz.

The air conditioner may not operate properly if the voltage is out of this range.

5-1-2 Check the parts that be weak or fragile

5-1-3 Check the terminals for proper connection

5-1-4 Refer to the table below when there is any malfunction;

Checkpoints Possible cause No

①

Trouble

The compressor does not operate.

➁

➂

1. Check the position of the thermostat.

2. Check the position of the select switch.

3. Check the connection of the lead wire.

4. Check the overload protector.

5. Check the compressor.

1. The setting temperature is higher than the room temperature in cool mode.

2. The setting temperature is lower than the room temperature in heat mode.

3. Lead wire disconnected.

4. O.L.P. damaged.

5. Compressor damaged.

1. Lead wire disconnected.

2. Switch damaged.

3. Motor damaged.

4. The unit is operating on the deice mode.

1. The leak is caused by a pipe crack.

2. Shortage of the refrigerant.

3. Clean the evaporator, and air filter.

➃

➄

The motor does not operate.

1. Check the connection of the lead wire and switch.

2. Check the motor.

3. Check whether the unit is deicing.

The cooling capacity is low.

Noise

1. Check the refrigerant for leak.

2. Check the evaporator condition.

(freezing, clogging with dust, etc.)

❊ The temperature difference between the air inlet side and air outlet side should be 12°C at the minimum.

❊ Standard state

Indoor : 27°C, Outdoor : 35°C

The heating capacity is low

1. Check the refrigerant for leak.

2. Check the evaporator condition.

(freezing, clogging with dust, etc.)

3. Check whether the drain equipment

(DRAIN PAN, DRAIN TUBE) is installed.

❊ The temperature difference between the air inlet side and outlet side should be 12°C at the minimum.

❊ Standard state

Indoor : 20°C, Outdoor : 7°C

❊ Adequate operating temperature

• Heating : Indoor : 0°C~21°C approx.

Outdoor : 28°C or less.

1. Check the vibration of the pipe.

2. Check the propeller fan and blower for looseness and weakness.

3. Check the motor bearing for noise.

4. Compare the compressor noise with other compressors.

1. The leak is caused by a pipe crack.

2. Shortage of the refrigerant.

3. Clean the evaporator, and air filter.

4. Install the drain pan and drain plug.

1. The pipe is in contact with other parts.

2. The tightening of the hexagon nut is faulty.

3. Damage of the motor.

4. Damage of the compressor.

Samsung Electronics 5-1

AWH-090ZE-2 6/22/98 2:12 PM Page 6

6. Exploded View and Parts List

6-1 Main unit

6-1 Samsung Electronics

AWH-090ZE-2 6/22/98 2:12 PM Page 7

■ Part List

Code No.

DB67-50031B

DB60-30004A

DB96-40172A

DB73-20047C

DB96-30270A

DB62-31715A

DB62-40034A

DB95-10065M

DB73-10004A

6021-000124

DB60-50008A

DB63-20002A

DB67-60020A

DB47-20008B

DB63-10165A

DB60-30018A

DB93-50012E

DB63-10355A

DB67-20019A

DB90-10150C

DB71-40001B

DB65-10010A

DB92-10006N

DB64-20036C

DB66-60010B

DB66-30037B

DB63-30021B

DB72-10102G

DB90-20193A

DB63-40009A

DB67-30012A

DB67-50051A

DB60-20019A

DB61-10012A

DB63-10121A

DB67-30013B

DB75-10001A

DB63-10082A

DB67-90003A

DB95-20134C

DB61-30484A

DB61-10029A

No.

36

37

38

39

40

31

32

33

34

35

41

42

26

27

28

29

30

21

22

23

24

25

16

17

18

19

20

11

12

13

14

15

6

7

8

9

10

1

2

3

4

5

Description Specification

ASSY-GRILLE

DOOR-CONTROL

LINK-BLADE, H

BLADE-H

GUARD-AIR FILTER

SEAL CABI FRONT

ASSY-BASE PAN

TRAY-DRAIN

PARTITION-E/CASING

BLOWER

BOLT-SPECIAL

CASE-EVAP

COVER-EVAP

PARTITION

COVER DAMPER

COVER-EVAP

REINF-PARTITION

ASSY-MOTOR

SUPPORT-MOTOR

CASE-COND

FAN-PROPELLER

NUT-FLANGE

ASSY-EVAPORATOR

RUBBER-TUBE

ASSY-CONDENSER

TUBE-4WAY ASSY

VALVE-CHECK ASS’Y

ASSY-COMP

GROMMET-ISOLATOR

NUT-HEXAGON

WASHER-COMP

GASKET

SPRING-OLP

OLP

COVER-TERMINAL

NUT-FLANGE

ASSY-LEAD WIRE COMP

CAP-DRAIN

DRAIN PAN OUT

ASSY-CABI

BAR STEEL

CLIP PIPE

HIPS, SC-94445R

ABS, SC-94445R

ABS, SC-94445R

ABS, SC-94445R

ABS, SC-94445R

PO-PU

SECC-P

31-FO PS, WHT

SGCC-M, T0.8

ABS

M6,L11,ZPC3,S45C

FOAM-PS

FOAM-PS

SGCC-M(G90-U), T1.0

PP

SGCC-M, T22

SGCC-M, T1.0

AMAFS-040AXEA

SGCC-M,T1.2

PP, BLK

AS+G/F(20%)

M6, – ,SM20C,NTR

2x12 SLIT 1.4

EPDM, – , – , –

2x13 WAVE 1.5

AWH090ZE

1/2inch, 30KG/CM2G

44H092JW1E4

EPDM

1C,M8,ZPC(YEL),SM10C

ID8.5,OD24,T1.6,ZPC

EPDM,TO.8

STS304-WPA

MRA12037-12007

NORYL

PI0.8,M5,SM20C

AWM1015 AWG16

CR,T2,BLK

PP

AWH090ZE

HSWR,D2.5

SECC-P

1

1

1

1

1

1

1

3

1

1

1

1

1

1

1

3

3

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Q'TY

AWH090ZE

1

1

1

7

1

Remarks

Samsung Electronics 6-2

AWH-090ZE-2 6/22/98 2:12 PM Page 8

6-2 Ass’y Control

6-3 Samsung Electronics

AWH-090ZE-3 6/22/98 2:13 PM Page 1

■ Part List

Code No.

DB64-50131A

DB61-10030A

DB47-20067A

DB65-10008A

2501-000353

DB61-40192A

DB39-10062U

DB61-10031A

DB66-60009B

DB61-60022B

DB72-10018C

DB66-70011B

DB64-40042J

DB34-90085A

DB66-30038B

DB66-30040B

DB47-20068A

DB45-10009A

No.

16

17

18

11

12

13

14

15

8

9

6

7

10

3

4

1

2

5

Description

KNOB-ASSY

CASE-CONTROL LOW

THERMOSTAT

CLIP-CAPACITOR

C-OIL

HOLDER SENSOR

POWER CORD

CASE-CONTROL UP

LINK-BLADE V

FRAME-BLADE

SEAL FRAME

LEVER-DAMPER

INLAY-SWITCH

SWITCH-SELECTOR

BLADE-V

BLADE-VH

THERMOSTAT-DEICE

TIMER-DEFROST

Specification

ABS, SC-94445R

SGCC-M,T0.8

13.8,3P

SGCC-M,T0.8

30/3uF, 370V

PP BLK

250V, 10/16A

SGCC-M,T0.8

SC-94445R

ABS, SC-94445R

FOPE+FOPU

ABS, SC-94445R

A1070S, T0.4,NO SWIN

ASSY, 5P

ABS, SC-94445R

SC-94445R

3P

D2506, 50/60Hz

1

1

1

1

1

1

1

1

1

1

Q'TY

AWH090ZE

1

1

2

1

1

1

1

1

Remarks

Samsung Electronics 6-4

AWH-090ZE-3 6/22/98 2:13 PM Page 3

7. Block Diagram

7-1 Refrigerating Cycle Block Diagram

T1

Heat exchanger

(Evaporator)

T2

Capillay tube

Check V/V

Heat exchanger

(Condenser)

Compressor

4-way valve

Cooling

Heating

Samsung Electronics 7-1

AWH-090ZE-3 6/22/98 2:13 PM Page 5

8. Wiring Diagram

8-1 AWH090ZE

GRN

M

F.M

H

S L

3

2

1

BLK

WHT

RED

O.L.P

BLK

WHT

RED

S

C

R

COMPRESSOR

BLK

CAPACITOR

(DUAL)

1

YEL

2 3 RED

DEICE

THERMOSTAT

4 5 3 2 1

4

DEICE TIMER

2 4 6 8

SELECTOR-S/W

1

GRN/YEL

GROUND

PLUG

SOLENOID-COIL

AWH090ZE CAPACITOR DUAL : 3/30µF

X

370VAC

Samsung Electronics 8-1