Compressor Troubleshooting - LG LXFS28596 Series Service Manual

12.Compressor Trouble Shooting
Troubleshooting
- COMP Operation Error LED Check
①
1. Open the PCBA Cover
When the COMP & FAN are not operating simultaneously, force operate from the Main PCB in TEST MODE to check whether it is operating
and then check the power of the COMP end to reset the power.
Troubleshooting
- Simple Check Flow Chart
LED 8 Blinks
LED 7 Blinks
LED 1 Blinks
Not Cooling
LED 4 Blinks
Y
LED Blinking?
LED 5 Blinks
N
LED 2 Blinks
Test Mode
1 Input
LED 3 Blinks
LED 6 Blinks
About 5min
②
2. Check the number of LED blinks
(Refer to the next page for resolution
by number of LED blinks)
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
Test Mode
Reset
1 Input
N
Comp. PCBA Output
Action?
> 60V
Y
Y
Check
Cycle leakage
LED 8 Blinks
About 5min
LED 7 Blinks
About 5min
LED 1 Blinks
About 5min
LED 4 Blinks
About 5min
LED 5 Blinks
About 5min
LED 2 Blinks
About 5min
LED 3 Blinks
About 5min
LED 6 Blinks
About 5min
N
Replace PCB
Check the Comp.
* Transmits LED blinking number to PDA after completing action
3. When the COMP is normal,
it will not blink
LED
Current/Voltage Sensing
1
2
Replace PCB
3 Comp Connection Error
4 Over Voltage Error
Replace PCB
5
Replace PCB
6 Over Current Error
7
Replace PCB
8 Communication Error
N
Comp.
Action?
Y
Check Comp.
Check
Cycle leakage
N
Comp. Harness
Action? wiring?
Y
Y
Check
Repair Harness
Cycle leakage
N
Comp.
PCBA Output
Action?
> 60V
Y
Y
Check Check Comp.
Cycle leakage
Trip Information
Error
Over Stroke
Comp Lock Error
IPM Error
Replace PCB
N
N
PCBA Output
> 60V?
Y
Check
Comp.
N
Replace PCB