Airwell VVFA Series Service Manual page 58

[64] CT current too high
Check if wire between
connecting board and module
is connected normally
Check if CT wire is conductive
If temperature on top of fixed
frequency compressor is too
If there is air into the system
If there is clogged, motor is bad
Yes
Yes
high
Yes
No
No
Replace compressor
No
Re-connect
No
Replace wire
No
If AC contactor
work
Yes
Recharge refrigerant
Yes
Fix the system
56
If normal after
Yes
replacing CT
detector
No
Replace PCB