Check
protection
logic
Check IPM Fault or
LED blinking 7
times(IPM Fault)
Compressor is not
activated
Check Point A short
circuit IPM output
>80V-20%
Replace PCB
Re-confirm
inspection
procedure
Visual
verification of
IPM burn
Power
Reset
3. LED blinking 7 times (IPM Fault)
Actions for each TRIP and the number of LED blinking
F
F
O
k
n
il
B
Blink Blink Blink Blink Blink Blink
Cause: IPM Short, defect(burned or damaged)
Objective: Protection of the over-current caused by IPM short or defect.
Actions: Visual verification of IPM burn when COMP is not in operation. Check whether
there is a short circuit in U, V, or W part.
Replace PCB
U
GND
GND
- 16 -
Содержание LTCS24223B /04
Страница 21: ...6 CIRCUIT DIAGRAM Models without Dispenser Lay Out of PCB 21 ...
Страница 61: ...July 2015 P No MFL31442314 ...