Airwell YEVFD Series, Service Manual

Page: 70 / 92

[49] Low pressure switch failure
If connection between pressure
switch and connecting
board is good
If the system pressure meets the
condition that pressure switch
shuts off
Make pressure switch terminal
on connecting board in short circuit,
check if failure exists still
Replace pressure switch
Replace connecting board
Re-connect
No
Yes
No
No
Yes
Yes
If the system lack of refrigerant
Recharge the refrigerant
[53] Current sensor failure
Check if where between
connecting board and CT
board is connected well (CN9)
Check if it is normal after
replacing CT board
CT board is broken down
Check if CT wire is conductive
Re-connect
Replace wire
Replace connecting board
No
No
No
Yes
Yes
Yes
68