Start-Up Failure - ComfortStar CARAT18-CD Service Manual

(4) Start-up failure (following AP1 for outdoor unit control board)
Mainly detect:
Whether the compressor wiring is connected correct?
Is time for compressor stopping enough?
Is compressor broken?
Power on the unit
Is stop time of the compressor
longer than 3 minutes?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Replace the control panel AP1
N
If the fault is eliminated?
Y
Does startup fail?
Y
Y
N
Replace the
compressor
Y
End
N
Restart it up after 3 minutes
Connect the wires as per the
N
connection diagram