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Malfunction indicator of outdoor unit
check points:
Out of step occurs once
the unit is powered on
Out of step occurs in
operation
Is stop time of the
compressor longer than
3 minutes?
Is the outdoor fan working
normally?
Check if the fan terminal
OFAN is connected correctly
Replace the fan
capacitor C1
Replace the
outdoor fan
Connect the
wires correctly
Replace the control
panel AP1
Is the input voltage normal?
Replace the control
panel AP1
Is heat dissipation of the unit
abnormal?
Is the
charge volume of refrigerant
too much?
Replace the
compressor
End
End
Replace the
compressor
Are the wires for the
compressor connected correctly? Is the
connection made in clockwise
direction?
If the fault is eliminated?
If the fault is eliminated?
Improve the heat dissipation
of the unit(eg. clean heat
exchanger, improve
ventilation, etc.)
Start the unit after input
volatge is normal
Charge refrigerant according
to the service manual
Fault with outdoor unit)
