Troubleshooting
Mainly detect:
Whether the unit voltage is too high? 
Whether the work voltage is too low?
Out of step occurs once the unit is powered on.
Is stop time of the compressor longer than 3 minutes?
Are the wires for the compressor connected correctly? Is connection sequence right?
Is the connection made in clockwise direction?
Connect the wires correctly
Replace the control panel AP1
If the fault is eliminated?
Replace the compressor
Out of step occurs in operation
Is the outdoor fan working normally?
Is the outdoor unit blocked by foreign objects?
Replace the
control panel AP1
If the fault is eliminated?
Replace the compressor
Check if the fan terminal |
| Replace the fan |
O FAN is connected correctly |
| |
| capacitor C1 | |
|
|
Replace the outdoor fan
Remove foreign objects
End
End
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