SAMSUNG AWH126JE0K_ALM.ME12.1.16 Service Manual

ROOM AIR CONDITIONER

FANCOOLHEATDEICE

POWER / MODE

°C

Hour

AWH126JE
AWH127JE

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. MAR. 1998.

©

Printed in Korea.
Code No. DB81-10152A

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
OFF Timer

Unit of Measure

-

mm

mm

Volt

-

Hz

A

W

FREON

g

BTU/h

BTU/h.W

kg
Row
Type
Row
Type

W

Model

­µF/ VAC
µF/ VAC

-

-

hr

AWH126/127JE (COOL/HEAT)

Window

600

X 394 X 555

X 470 X 655

715

220 - 240

Single

50

5.9 / 5.3

1,350 / 1,210

R-22

680

11,500 / 11,500

8.5 / 9.5
45

X 14

2

Propeller Fan

2 X 14

Blower

AMAFS100ATEA

48H124JV1E4

MRA12030-12008

30 / 450

3.5 / 450

Fan speed switch (High & Low)

Thermistor

DUAL TYPE

24

Remarks

Samsung Electronics 2-1

2-2 Dimensions

600

394 595

FANCOOLHEATDEICE

POWER / MODE

°C

Hour

2-2-1 Main Unit

Front view Side view

Unit : mm

2-2-2 Remote Control

Mode selection Buttons

(FAN, HEAT, 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

FANCOOLHEATDEICE

POWER / MODE

°C

Hour

Remote control sensor

Deice indicator

Operating mode indicator

Temperature/Timer settings

Temperature indicator
Timer indicator

POWER/MODE button

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 -1ûC"

*

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

*

2. Default value after power reset →set temperature = 18ûC

FAN SPEED = HIGH

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

3-2-2 Heating 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 +1ûC"

*

The compressor is turned on when "ambient temperature = set temperature -1ûC"

*

2. Default value after power reset →set temperature = 24ûC

FAN SPEED = HIGH

3. Set temperature indicating (setting) range : 1ûC interval from 16ûC to 30ûC.

3-2-3 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

3-2-4 LED lamp and LED display indication in case of error detection

ERROR OPERATION

ROOM THERMISTOR

(OPEN OR SHORT)

INDOOR PIPE THERMISTOR

(OPEN OR SHORT)

OUTDOOR PIPE THERMISTOR

(OPEN OR SHORT)

LED LAMP DISPLAY

COOL HEAT FAN

7-SEG

LED DISPLAY

E1 displayed
E5 displayed

E6 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.

3-2-5 Panel key operation

Key discription

Key name

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

at every ON

*

- Selected as "OFF –> COOL –> HEAT –> 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

HEAT The mode is set to "HEAT" –> ON

Others –> OFF

FAN The mode is set to "FAN" –> ON

Others –> OFF

ûC 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

DEICE Till the "DEICING" operation is completed during heating opertion -> ON

Others –> OFF

In case of (set) temperature display

-> NO. (1) 7 seg. LED display indicates temperature of the tens digit (ûC, ûF)

-> NO. (2) 7 seg. LED display indicates temperature of the units digit (ûC, ûF)
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”, “INDOOR PIPE THERMISTOR”

and “OUTDOOR PIPE THERMISTOR” for each temperature

1. Room thermistor (SPEC : 103AT)

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

2. Indoor pipe Thermistor and Outdoor pipe Thermistor (SPEC : 10KD)

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]

1.670

1.729

1.791

1.855

1.922

1.992

2.065

2.141

2.220

2.303

2.390

2.480

2.574

2.672

2.775

2.882

2.994

3.111

3.234

3.362

3.496

3.635

3.780

3.932

4.091

4.257

4.432

4.614

4.806

5.007

5.217

5.438

5.669

5.912

6.167

6.435

6.716

7.012

7.322

7.649

7.993

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

-10

THERMISTOR RESISTOR

[Kohm]

8.354

8.734

9.135

9.556

10.00

10.46

10.94

11.45

11.99

12.55

13.15

13.78

14.44

15.14

15.88

16.66

17.48

18.36

19.28

20.25

21.28

22.38

23.54

24.76

26.06

27.44

28.90

30.45

32.10

33.85

35.66

37.59

39.64

41.82

44.14

46.60

49.22

52.01

54.98

58.14

3-6

Samsung Electronics

3-2-8 About the safety devices

1. High temperature release : If temperature of the indoor pipe thermistor increases over the specified value during heating
operation, following operation is carried out for safety of the equipment.

A condition : temperature of indoor pipe thermistor is below 47ûC
B condition : temperature of indoor pipe thermistor is between 58ûC and 63ûC
C condition : temperature of indoor pipe thermistor is over 63ûC

1) High temperature release operation OFF condition = A condition

-> compressor ON (only in THERMO ON condition)

-> fan motor speed = set fan speed and cool blowing inhibiting operation

2) High temperature release operation ON condition = B condition

-> compressor ON

-> fan motor speed = HIGH operation if it was LOW
= HIGH operation if it was HIGH

3) High temperature release operation ON condition = C condition

-> fan motor speed = set fan speed

-> compressor OFF

2. Low temperature release : If temperature of the indoor pipe thermistor decreases below the specified value during cooling
operation, following operation is carried out for safety of the equipment.

A condition : temperature of indoor pipe thermistor is below -1ûC for more than 6 minutes
B condition : temperature of indoor pipe thermistor is over 5ûC

1) Low temperature release ON condition = A condition

-> compressor OFF

-> fan motor "set fan speed"

2) Low temperature release OFF condition = B condition

-> The compressor is turned on if ON condition is satisfied after comparing the ambient temperature with the set
temperature

-> fan motor "set fan speed"

[Detailed description]

1) If temperature of indoor pipe thermistor is below -1ûC for more than 6 minutes, the fan motor continues to operate at
the set fan speed and the compressor is turned off(Low temperature release operation)

2) If temperature of the indoor pipe thermistor increases over +5ûC during low temperature release operation, normal
operation is recovered
: compressor ON, fan mtor set fan speed -> Low temperature release operation OFF

3) If temperature of indoor pipe thermistor increases over 0ûC during counting 6 minutes below -1ûC, the counter is reset.

Samsung Electronics 3-7

3. Deicing operation : If temperature of the outdoor pipe thermistor decreases below the specified value during heating opera­tion, following operation is carried out for safety of the equipment.

Outdoor pipe
Thermistor

temperature (A-Condition) : STANDARD

12[ûC]

100min below

-4[ûC]

100min
COUNT
ON

Outdoor pipe
Thermistor

temperature (B-Condition) : STANDARD

12[ûC]

-6[ûC]

30min
COUNT
ON

Outdoor pipe
Thermistor

temperature (C-Condition) : STANDARD

12[ûC]

100min
COUNT
OFF

30min below

30min
COUNT
OFF

100min
COUNT
ON

30min
COUNT
ON

Deicing
operation

100min

ON

5min

Deicing
operation

ON

30min 5min

Deicing
operation

OFF

Deicing
operation

OFF

10min below

-8[ûC]

10min
COUNT
ON

10min
COUNT
OFF

10min
COUNT
ON

Deicing
operation

ON

2min 5min

Deicing
operation

OFF

3-8 Samsung Electronics