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20 minutes after the
complete unit is
powered o ff
Is the terminal FA for the
PMV connected correctly?
Connect the
wires correctly
Resistances between the first four pins
close to the terminal hole and the fifth
pin are almost the same, less than 100
ohm.
Replace the PMV
If the fault is eliminated?
If the fault is eliminated?
Replace the
control panel
AP1
Coolant leakage, refilling
the coolant
End
(6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board)
Mainly detect:
Wether the PMV is connected well or not? Is PMV damaged?
Is refrigerant leaked?
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