LG LSC27914SB Owner's Manual - Page 107

Enter to TEST MODE 2 Press TEST S/W once

Page 107 highlights

16) Poor Cooling in Refrigerator section NO. CHECKING FLOW 1) Unplug Damper Motor 2) Check the Damper Motor impedance. 123 9 RESULT & SERVICE ACTION Result Service Action 1 ~6 369 ~ 451Ù Change PCB Other Change Damper 2~5 369 ~ 451Ù Change PCB Other Change Damper 3~4 129.6~158.4Ù Change PCB Other Change Damper 65 4 1) Reset product. 2) Enter to TEST MODE 1 (press once TEST S/W on Main PCB). Result Service Action a~b Below 10 V Change Main PCB Other Go to Step 11 b~c 0V or 5V Change Fan Motor Other Go to Step 11 a ~b 3) Check Voltage in CON 6 as shown in the pictures. 10 b~c 1) Reset the refrigerator. 2) Enter to TEST MODE 1 (Press TEST S/W once). 3) Check Voltage in CON 1. 4) Enter to TEST MODE 2 (Press TEST S/W once again). 5) Check Voltage in CON 1. 6) Proceed with the action. 11 Result Service Action TEST MODE 1 Bad compressor, Refrigerant leakage, tube 110~127Vac obstruction, etc. (Please refer to cycle troubleshooting) Other Change Main PCB TEST MODE 2 0~5 Vac Bad compressor, Refrigerant leakage, tube obstruction, etc. (Please refer to cycle troubleshooting) Other Change Main PCB - 106 -

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16) Poor Cooling in Refrigerator section
CHECKING FLOW
RESULT & SERVICE ACTION
1) Unplug Damper Motor
2) Check the Damper Motor impedance.
9
10
NO.
1) Reset product.
2) Enter to TEST MODE 1 (press once TEST S/W
on Main PCB).
1) Reset the refrigerator.
2) Enter to TEST MODE 1 (Press TEST S/W once).
3) Check Voltage in CON 1.
4) Enter to TEST MODE 2 (Press TEST S/W once
again).
5) Check Voltage in CON 1.
6) Proceed with the action.
4
5
6
1
2
3
Result
Service Action
~
Change PCB
369 ~ 451
Ù
Other
Change Damper
~
Change PCB
369 ~ 451
Ù
Other
Change Damper
1
6
2
5
~
3
4
129.6~158.4
Ù
Change PCB
Change Damper
Other
Result
Service Action
Change Main PCB
Below 10 V
Other
Go to Step 11
Change Fan Motor
0V or 5V
Other
Go to Step 11
~
a
b
~
b
c
~
b
c
~
a
b
3) Check Voltage in CON 6 as shown in the pictures.
Result
Service Action
Change Main PCB
110~127Vac
Other
Bad compressor,
Refrigerant leakage, tube
obstruction, etc.
(Please refer to cycle
troubleshooting)
0~5 Vac
TEST
MODE 1
TEST
MODE 2
Other
Change Main PCB
Bad compressor,
Refrigerant leakage, tube
obstruction, etc.
(Please refer to cycle
troubleshooting)
11
- 106 -