LG LFXS26973 series, Service Manual

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Troubleshooting
Check Comp.
Y
N
PCBA Output
> 60V?
N
Check
Cycle leakage
N
Y
Y
Troubleshooting
- Simple Check Flow Chart
LED 7 Blinks
LED 2 Blinks
LED 1 Blinks
Replace PCB
Comp.
Action?
Replace PCB
Y
LED 6 Blinks
Comp.
Action?
LED Blinking?
Comp.
Action?
PCBA Output
> 60V
Replace PCB
N
N
Y
N
Not Cooling
Harness
wiring?
Y
Repair Harness
N
Y
LED 8 Blinks
Replace PCB
Reset
LED 7 Blinks
LED 1 Blinks
LED 2 Blinks
LED 6 Blinks
LED 8 Blinks
LED 3 Blinks LED 3 Blinks
LED 5 Blinks
Comp.
Action?
LED 5 Blinks
Check
Comp.
Check Comp.
Check the Comp.
Test Mode
1 Input
About 5min Check
Cycle leakage
Check
Cycle leakage
Check
Cycle leakage
About 5min
About 5min
About 5min
About 5min
About 5min
About 5min
About 5min
LED 4 Blinks Replace PCB
LED 4 Blinks
About 5min
Reset
Reset
Reset
Reset
Reset
Reset
Reset
Test Mode
1 Input
Test Mode
1 Input
Test Mode
1 Input
Test Mode
1 Input
Test Mode
1 Input
Test Mode
1 Input
Test Mode
1 Input
Test Mode
1 Input
PCBA Output
> 60V
Replace PCB
Replace PCB
Y
N
Y
N
LED Trip Information
1
Current/Voltage Sensing
Error
2 Over Stroke
3 Comp Connection Error
4 Over Voltage Error
5 Comp Lock Error
6 Over Current Error
7 IPM Error
8 Communication Error
* Transmits LED blinking number to PDA after completing action