Led Blinks Seven Times, Then Repeats (Ipm Fault: A & E Inverters) - LG LMXS27626S Service Manual

B5. LED blinks seven times, then repeats (IPM Fault: A & E Inverters)
B n i l k B n i l k B n i l k B n i l k B n i l k B n i l
- 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 minutes.
Protection
logic
(Lock Piston Trip) Check B5
Check B
k B n i l k O F F
Blink 7 times
Y
Compressor
visual inspection
Doesn't work
N
Power
Reset
Check IPM
(turn off) Point A
Y
Modify
Compressor
Damage
Check C3
NG
- 83 -
Protection Logic
A
Short
N
Replace
Test
Drive PCB
Repeat
Y Check Procedure
Replace
Compressor