- 63 -
B5. LED blinks seven times, then repeats
Protection Logic
Blink
Blink
Blink
Blink Blink Blink Blink OFF
Protection
logic
Check B
Blink 7 times
(Lock Piston Trip) Check B5
Compressor
Doesn’t work
Y
N
Repeat
Check Procedure
Replace
Drive PCB
N
Y
Check IPM
visual inspection
(turn off)
Short
Test
Point A
Power
Reset
Compressor
Damage
Check C3
Replace
Compressor
NG
Y
Modify
- 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.
A
Содержание LFX31915 Series
Страница 20: ... 20 5 CIRCUIT DIAGRAM ...
Страница 22: ... 22 7 PCB PICTURE 7 1 Main PCB P No MFG EBR75234702 2011 01 Picture CON2 CON3 CON1 CON5 CON6 CON7 ...
Страница 23: ... 23 7 2 Display PCB Sub PCB P No Display PCB EBR 729554 2011 03 Sub PCB EBR60070709 2011 01 Picture ...
Страница 86: ...P No MFL62188080 JUL 2013 Printed in Korea ...