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N
N
N
Y
Y
Y
Y
N
20min after
de-energization of
complete unit
Is electric expansion
valve well connected?
Is overload wire
reliably connected?
Replace electric
expansion valve
Adjust
connecting wire
Remove malfunction?
Replace parts
of outdoor electric box
Remove malfunction?
Refrigerant leakage,
recharge the
refrigerant
Finish
(5)Diagnosis of overload and discharge malfunction
Main detection point:
● Is electric expansion valve well connected? Is it damaged?
● Is refrigerant leaked?
● Is overload wire connection normal?
Malfunction diagnosis process:
