Samsung AW127JB User manual

ROOM AIR CONDITIONER
AW126JB/127JB
AW126JE/127JE
AW12A6JD/12A7JD
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
SERVICE Manual
FANCOOL
POWER / MODE
°C
Hour
AW126JB/front 6/27/98 10:37 AM Page 2

1. Precautions
Samsung Electronics 1-1
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 later-
intermittent 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
AW126JB-1 6/27/98 10:38 AM Page 1

2. Product Specifications
2-1 Table
Samsung Electronics 2-1
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
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
-
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
Unit of Measure
Window
600 X 394 X 595
715 X 470 X 655
220~240
Single
50
5.8
1,330
R-22
660
12,000
9.0
220
Single
60
6.3
1,330
200~220
Single
50
6.8
1,330
R-22
650
12,000
9.045
45
R-22
880
12,000
9.0
R-22
660
12,000
9.0
2 X 14
Blower
2 X 14
Propeller Fan
3 X 14
Propeller Fan
2 X 14
Propeller Fan
Fan speed switch(High & Low)
Thermistor
24
30/450
3.5/450
AMAFS100ATEA
48A124JV1E1
MRA12030-12008
AMAFS100ZTEA
44B124IW1E6
MRA12008-12008
AMAFS100ATEB
48A124MV1E5
MRA98706-12008
Remarks
DUAL TYPE
AW126/127JE AW126/127JB AW12A6JD/12A7JD AW126JB(Mexico)
AW126JB-1 6/27/98 10:38 AM Page 3

2-2 Dimensions
2-2-1 Main Unit
2-2-2 Remote Control
2-2 Samsung Electronics
600
394 394
595
FANCOOL
POWER/ MODE
°C
Hour
MODE
Front view Side view
Unit : mm
Mode selection Buttons
(FAN, COOL)
Temperature adjustment buttons
Timer setting buttons
ON/OFF Buttons
Air flow swing button
Fan speed adjustment Buttons
(HIGH, LOW)
AW126JB-1 6/27/98 10:38 AM Page 4

3. Installation and Operating Instructions
3-1 Installation
Samsung Electronics 3-1
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 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.)
*When selecting the area for installing the unit, be sure to obtain approval of the customer.
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.
AW126JB-1 6/27/98 10:38 AM Page 5

3-2 Function Description
3-2-1 Cooling operation mode
3-2 Samsung Electronics
FANCOOL
POWER / MODE
°C
Hour
Remote control sensor Temperature/Timer settings
Temperature indicator
Timer indicator
POWER/MODE BUTTON
Operating mode indicator
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.
AW126JB-1 6/27/98 10:38 AM Page 6

3-2-3 LED lamp and LED display indication in case of error detection
Samsung Electronics 3-3
ERROR OPERATION
ROOM THERMISTOR
(OPEN OR SHORT)
7-SEG
LED DISPLAY
E1 displayed
LED LAMP DISPLAY
COOL FAN
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 operational function Key Type
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 discription
Key name
AW126JB-1 6/27/98 10:38 AM Page 7

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
-> 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
(1) (2)
AW126JB-1 6/27/98 10:38 AM Page 8

3-5
Samsung Electronics
3-2-7 Resistor values table of “ROOM THERMISTOR” for each temperature
Temperature
[˚C] THERMISTOR RESISTOR
[Kohm]
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
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] THERMISTOR RESISTOR
[Kohm]
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
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
<Room thermistor>
AW126JB-1 6/27/98 10:38 AM Page 9

4. Disassembly and Reassembly
4-1 Compressor Replacement Flow Chart
Samsung Electronics 4-1
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
Solder discharge line
Corrective action Check refrigerant oil level
Add oil as necessary
Solder suction line Use nitrogen gas
Perform soldering function
Fill system with nitrogen gas
Check for leakage
Recharge system
Recharge system
Evacuate system
Release nitrogen gas?
Problem?
Low oil level? NY
Y N
N
Y
Leakage?
AW126JB-1 6/27/98 10:38 AM Page 11