SAMSUNG AWH126JE0K_ALM.ME12.1.16 Service Manual

ROOM AIR CONDITIONER

AWH126JE

AWH127JE

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

POWER / MODE

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.

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!

Fig. 1-4 Clean the Unit

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1-1

2. Product Specifications

2-1 Table

Item	Unit of Measure	AWH126/127JE (COOL/HEAT)	Remarks
Type	-	Window
Dimensions:	mm
(Width X Height X Depth)		600 X 394 X 555
Packing Size	mm	715 X 470 X 655
(Width X Height X Depth)
Voltage:	Volt	220 - 240
Phase	-	Single
Frequency	Hz	50
Operating Current	A	5.9 / 5.3
Power Consumption	W	1,350 / 1,210
Refrigerant Type	FREON	R-22
Refrigerant Charge	g	680
Cooling Capacity	BTU/h	11,500 / 11,500
EER	BTU/h.W	8.5 / 9.5
Net Weight	kg	45
Condenser	Row	2 X 14
Condenser Fan	Type	Propeller Fan
Evaporator	Row	2 X 14
Evaporator Fan	Type	Blower
Fan Motor	W	AMAFS100ATEA
Compressor(Rotary)	Model	48H124JV1E4
Overload Protect	-	MRA12030-12008
Compressor Capacitor	µF/ VAC	30 / 450
		3.5 / 450 DUAL TYPE
Fan Motor Capacitor	µF/ VAC
Fan Speed Control	-	Fan speed switch (High & Low)
Thermo Control	-	Thermistor
OFF Timer	hr	24

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2-1

2-2 Dimensions

2-2-1 Main Unit

Unit : mm

595

Front view	Side view
	394
600

2-2-2 Remote Control

Mode selection Buttons	Timer setting buttons
(FAN, HEAT, COOL)
Temperature adjustment buttons	ON/OFF Buttons
Fan speed adjustment Buttons	Air flow swing button
(HIGH, LOW)

2-2	Samsung Electronics

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)

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 sunlight.)

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.

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3-1

3-2 Function Description

Remote control sensor

°C

Hour

Deice indicator

DEICE

HEAT

COOL

FAN

Temperature/Timer settings

Temperature indicator Timer indicator

POWER/MODE button

POWER / MODE

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 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 +1˚C"

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

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

FAN SPEED = HIGH

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

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					LED LAMP DISPLAY						7-SEG
			COOL			HEAT			FAN		LED DISPLAY
ROOM THERMISTOR											E1 displayed
(OPEN OR SHORT)
INDOOR PIPE THERMISTOR											E5 displayed
(OPEN OR SHORT)
OUTDOOR PIPE THERMISTOR											E6 displayed
(OPEN OR SHORT)

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 operational function	Key Type
	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.

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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
		˚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
	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 (˚C, ˚F)
						-> NO. (2) 7 seg. LED display indicates temperature of the units digit (˚C, ˚F)
						In case of time (OFF TIMER) display
						-> NO. (1) 7 seg. LED display indicates time of the tens digit
(1)		(2)
						-> 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	THERMISTOR RESISTOR
[˚C]	[Kohm]
70	2.229
69	2.296
68	2.365
67	2.437
66	2.512
65	2.589
64	2.669
63	2.752
62	2.838
61	2.928
60	3.021
59	3.116
58	3.216
57	3.319
56	3.426
55	3.537
54	3.652
53	3.772
52	3.897
51	4.026
50	4.161
49	4.300
48	4.444
47	4.594
46	4.749
45	4.912
44	5.080
43	5.256
42	5.439
41	5.630
40	5.828
39	6.033
38	6.246
37	6.468
36	6.699
35	6.941
34	7.192
33	7.455
32	7.729
31	8.015
30	8.313

Temperature	THERMISTOR RESISTOR
[˚C]	[Kohm]
29	8.622
28	8.944
27	9.281
26	9.632
25	10.000
24	10.380
23	10.780
22	11.200
21	11.630
20	12.090
19	12.560
18	13.060
17	13.570
16	14.120
15	14.680
14	15.280
13	15.900
12	16.550
11	17.240
10	17.960
9	18.700
8	19.480
7	20.290
6	21.150
5	22.050
4	22.990
3	23.900
2	25.030
1	26.130
0	27.280
-1	28.470
-2	29.720
-3	31.040
-4	32.430
-5	33.890
-6	35.430
-7	37.050
-8	38.760
-9	40.560

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

Temperature	THERMISTOR RESISTOR
[˚C]	[Kohm]
70	1.670
69	1.729
68	1.791
67	1.855
66	1.922
65	1.992
64	2.065
63	2.141
62	2.220
61	2.303
60	2.390
59	2.480
58	2.574
57	2.672
56	2.775
55	2.882
54	2.994
53	3.111
52	3.234
51	3.362
50	3.496
49	3.635
48	3.780
47	3.932
46	4.091
45	4.257
44	4.432
43	4.614
42	4.806
41	5.007
40	5.217
39	5.438
38	5.669
37	5.912
36	6.167
35	6.435
34	6.716
33	7.012
32	7.322
31	7.649
30	7.993

Temperature	THERMISTOR RESISTOR
[˚C]	[Kohm]
29	8.354
28	8.734
27	9.135
26	9.556
25	10.00
24	10.46
23	10.94
22	11.45
21	11.99
20	12.55
19	13.15
18	13.78
17	14.44
16	15.14
15	15.88
14	16.66
13	17.48
12	18.36
11	19.28
10	20.25
9	21.28
8	22.38
7	23.54
6	24.76
5	26.06
4	27.44
3	28.90
2	30.45
1	32.10
0	33.85
-1	35.66
-2	37.59
-3	39.64
-4	41.82
-5	44.14
-6	46.60
-7	49.22
-8	52.01
-9	54.98
-10	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 47˚C

B condition : temperature of indoor pipe thermistor is between 58˚C and 63˚C

C condition : temperature of indoor pipe thermistor is over 63˚C

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 -1˚C for more than 6 minutes

B condition : temperature of indoor pipe thermistor is over 5˚C

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 -1˚C 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 +5˚C 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 0˚C during counting 6 minutes below -1˚C, the counter is reset.

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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[˚C]
100min below
-4[˚C]
100min	100min	100min	Deicing	Deicing
COUNT	COUNT	COUNT	operation	operation
ON	OFF	ON	ON	OFF
		100min	5min

Outdoor pipe

Thermistor
temperature	(B-Condition) : STANDARD
12[˚C]
	30min below
-6[˚C]
	30min	30min	30min	Deicing	Deicing
	COUNT	COUNT	COUNT	operation	operation
	ON	OFF	ON	ON	OFF
			30min	5min

Outdoor pipe
Thermistor
temperature	(C-Condition) : STANDARD
12[˚C]
	10min below
-8[˚C]
	10min	10min	10min	Deicing	Deicing
	COUNT	COUNT	COUNT	operation	operation
	ON	OFF	ON	ON	OFF
			2min	5min
3-8					Samsung Electronics