80
Troubleshooting
Start Failure Malfunction
Energize and
start the unit
Is the stop duration of the compressor longer than
3 minutes.
The stop duration of the unit
is not long enough, the high
and low side pressure of
the system is not balanced,
restart it after 3 minutes
Are the wire connections
on the compressor
connected properly
Eliminate the malfunction
Yes
No
No
Yes
Reconnect the wires
according to the wiring
diagram
No
Yes
Is the unit overcharged
Eliminate the malfunction
Charge the unit according
to the “Charging” section of
this manual
Replace the outdoor main
board
Eliminate the malfunction
Replace the compressor
End Troubleshooting
Yes
Yes
No
Yes
No
