LG LFX25992ST Service Manual page 72

B5. LED blinks seven times, then repeats (IPM Fault: A & E Inverters)
Protection Logic
Blink Blink Blink Blink Blink Blink Blink OFF
- Purpose: Prevent high current due to IPM Short
- Cause: Damaged IPM (Dead Short)
- Test for a dead short at Point A with a VOM.
- Logic: Compressor is forced off and tries to restart in 20 seconds.
Protection
A
Blink 7 times
logic
(Lock Piston Trip) Check B5
Check B
Y
Check IPM Short
N
Compressor Replace
visual inspection Test
Doesn't work Drive PCB
(turn off) Point A
Y
Modify
N
Repeat
Check Procedure
Compressor Y
Power
Damage
Reset
Check C3
NG
Replace
Compressor
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