Self-Diagnosis Function; Error Indicator; 9,12Kbtu/H Model - LG General Wall Mounted-Inverter Type Svc Manual

Part 4 Trouble Shooting

7. Self-diagnosis Function

I Error Indicator
• The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble.
• Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table.
• If more than two troubles occur simultaneously, primarily the highest trouble fo error code is expressed.
• After error occurrence, if error is released, error LED is also released simultaneously.
• To operate again on the occurrence of error code, be sure to turn off the power and then turn on.
• Having or not of error code is different from Model.
I 9, 12kBtu/h Model
Error

Error Indicator

Code
1 time 1time
1
3 sec 3 sec
2 times
2
3 sec
4
5
6
7
8
9
10
46 Room Air Conditioner
1time 1time 1time
3 sec 3 sec
2 times
2 times 2 times
3 sec 3 sec
4 times
4 times
3 sec
3 sec
5times
5times
3 sec
3 sec
6times 6times
3 sec
7times
7times
3 sec
8times 8times
3 sec
9times
9times
3 sec
10 times 10 times
3 sec
Cause of Error
• Indoor Temp. sensor error
- Sensor open or short
• Outdoor Temp. sensor error
- Sensor open or short
• Heat Sink sensor error
- Sensor open or short
- Heat Sink temp is over 95
• Communication error
• DC Peak error
• Over current error (CT2)
• Indoor fan lock error
(BLDC fan model only)
• Outdoor fan lock error
(BLDC fan model only)
• D-Pipe TH. is short or open.
Indoor
Display
Operation
Indoor Outdoor
O
ON
O O
ON
O O ON
°...
O O
OFF
SHUT
O O
DOWN
SHUT
O O
DOWN
OFF
O
OFF
O O
O O
ON
(4 LED Model)