SAMSUNG AW12A6JD_QUA.80727.1.16 Service Manual

ROOM AIR CONDITIONER

FANCOOL

POWER / MODE

°C

Hour

AW126JB/127JB AW126JE/127JE AW12A6JD/12A7JD

Manual

SERVICE

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. PCB Diagram

9. Wiring Diagram

10. Schematic Diagrams

ELECTRONICS

Samsung Electronics Co., Ltd. JUN. 1998.

Printed in Korea. Code No. DB81-10150A(4)

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.

Fig. 1-1 Avoid Dangerous Contact

Fig. 1-2 No Tapping and No Extension Cords

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. 1-3 No Kids Nearby!

Fig. 1-4 Clean the Unit

Samsung Electronics 1-1

2. Product Specifications

2-1 Table

Item

T ype Dimensions: (Width X Height X Depth) Packing Size (Width X Height X Depth) Voltage: Phase Frequency Operating Current Power Consumption Refrigerant Type Refrigerant Charge Cooling 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 Sleep Timer

Unit of Measure

Volt

FREON

BTU/h

BTU/h.W

kg Row Type Row Type

Model

µF/ VAC µF/ VAC

AW126/127JE AW126/127JB AW12A6JD/12A7JD

220~240

Single

5.8

1,330

R-22

660

12,000

9.0

Propeller Fan

AMAFS100ATEA

48A124JV1E1

MRA12030-12008

R-22

650

12,000

9.045

X 14

Fan speed switch(High & Low)

AW126JB(Mexico)

Window

600

X 394 X 595

715 X 470 X 655

220

Single

6.3

1,330

R-22

880

12,000

9.0

3 X 14

Propeller Fan

X 14

Blower

AMAFS100ZTEA

44B124IW1E6

MRA12008-12008

30/450

3.5/450

DUAL TYPE

Thermistor

200~220

Single

6.8

1,330

R-22

660

12,000

9.0

2 X 14

Propeller Fan

AMAFS100ATEB

48A124MV1E5

MRA98706-12008

Remarks

Samsung Electronics 2-1

2-2 Dimensions

600

394

595

FANCOOL

POWER / MODE

°C

Hour

MODE

2-2-1 Main Unit

Front view Side view

Unit : mm

2-2-2 Remote Control

Mode selection Buttons

(FAN, COOL)

Temperature adjustment buttons

Fan speed adjustment Buttons

(HIGH, LOW)

2-2 Samsung Electronics

Timer setting buttons

ON/OFF Buttons

Air flow swing button

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.

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

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 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)

Caution:

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

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 sun-

light.)

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.)

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

3-2 Function Description

FANCOOL

POWER / MODE

°C

Hour

Remote control sensor

Temperature/Timer settings

Temperature indicator Timer indicator

POWER/MODE BUTTON

Operating mode indicator

3-2-1 Cooling operation mode

The compressor is turned on and off according to the ambient temperature and set temperature.

1. Compressor on and off control

• Compressor on and off control according to the ambient temperature. The compressor is turned off when "ambient temperature = set temperature -1˚C"

The compressor is turned on when "ambient temperature = set temperature +1˚C"

2. Default value after power reset ➔set temperature = 18˚C

FAN SPEED = HIGH

3. Set temperature indicating (setting) range : 1˚C interval from 18˚C to 30˚C.

3-2-2 Fan operation mode

1. If "Fan operation mode" signal is received from remocon.

➔ the compressor is immediately turned off and only fan motor is operated at set blowing speed. ➔ it changes such as "HIGH ➔ LOW ➔ HIGH"( if Fan speed is selected).

2. The initial FAN speed is set to "HIGH".

3. The set temperature can not be indicated and set.

3-2 Samsung Electronics

3-2-3 LED lamp and LED display indication in case of error detection

ERROR OPERATION

ROOM THERMISTOR

(OPEN OR SHORT)

LED LAMP DISPLAY

COOL FAN

7-SEG

LED DISPLAY

E1 displayed

Lamp blinking at every second (on for 0.5s and off for 0.5s)

LED lamp off

1. Set operation in case of error occurrence.

• Malfunction of each temperature sensor (open, short)

- Error mode display, warning sound.

- The operation status is off.

2. The "outdoor pipe thermistor" error mode carry out checking only during heating operation and do not carry out checking during "COOLING" and "FAN" operation.

3-2-4 Panel key operation

Key discription

Key name

Power/Mode 1. Operation mode change and POWER OFF(in case of model option cooling only) TACT

at every ON

- Selected as "OFF –> COOL –> FAN –> OFF". (DEFAULT=OFF) Continuous operation is not available.

Key operational function Key Type

Samsung Electronics 3-3

3-2-6 LED lamp operation specifications

LAMP name Operations specifications

COOL The mode is set to "COOL" –> ON

Others –> OFF

FAN The mode is set to "FAN" –> ON

Others –> OFF

˚C The set temperature is displayed or set -> ON

Others –> OFF

HR During setting of the convenient reserve (OFF TIMER) time -> blinking

After setting of the convenient reserve (OFF TIMER) time -> ON Others –> OFF

In case of (set) temperature display

-> NO. (1) 7 seg. LED display indicates temperature of the tens digit (˚C, ˚F)

-> NO. (2) 7 seg. LED display indicates temperature of the units digit (˚C, ˚F) In case of time (OFF TIMER) display

(1) (2)

-> NO. (1) 7 seg. LED display indicates time of the tens digit

-> NO. (2) 7 seg. LED display indicates time of the units digit

3-4 Samsung Electronics

3-2-7 Resistor values table of “ROOM THERMISTOR” for each temperature

Temperature

[˚C] 70

69 68 67 66 65 64 63 62 61 60

59 58 57 56 55 54 53 52 51 50

49 48 47 46 45 44 43 42 41 40

39 38 37 36 35 34 33 32 31 30

THERMISTOR RESISTOR

[Kohm]

2.229

2.296

2.365

2.437

2.512

2.589

2.669

2.752

2.838

2.928

3.021

3.116

3.216

3.319

3.426

3.537

3.652

3.772

3.897

4.026

4.161

4.300

4.444

4.594

4.749

4.912

5.080

5.256

5.439

5.630

5.828

6.033

6.246

6.468

6.699

6.941

7.192

7.455

7.729

8.015

8.313

Temperature

[˚C]

29 28 27 26 25 24 23 22 21 20

19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1 0

-1

-2

-3

-4

-5

-6

-7

-8

-9

THERMISTOR RESISTOR

[Kohm]

8.622

8.944

9.281

9.632

10.000

10.380

10.780

11.200

11.630

12.090

12.560

13.060

13.570

14.120

14.680

15.280

15.900

16.550

17.240

17.960

18.700

19.480

20.290

21.150

22.050

22.990

23.900

25.030

26.130

27.280

28.470

29.720

31.040

32.430

33.890

35.430

37.050

38.760

40.560

Samsung Electronics

3-5

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

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

Problem?

Y N

Corrective action

Solder discharge line

Check refrigerant oil level

Low oil level?

Solder suction line Use nitrogen gas

Fill system with nitrogen gas

Perform soldering function

Check for leakage

Leakage?

Release nitrogen gas?

Evacuate system

Add oil as necessary

Recharge system

Samsung Electronics 4-1

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

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