Switching on the air conditioner
The current leakage switch
jumps to turn off
Junction wire looses and collides with the outer
cover.
Degraded capability of wire insulation.
Insulation capability of
some components has
lowered.
Check the resistance
of every component
by multimeter
Water comes into the plug or electric components.
The fuse is blown
or air limit switch
jumps to turn off
Is the voltage
of power supply lower
than 15% of rated voltage
(220V)?
Yes
The voltage is low,
please add manostat.
Short circuit
somewhere.
Partially short circuit in
some components.
Fuse capacity
is adequate or not?
Yes
No
No
Replace with adequate
fuse.
Check as the above
-mentioned method.
Short circuit in the
electric wire or
connection wire.
Without any
response
Check whether
the receptacle has
power or not.
Power supply error
Strong circuit breaks
the circulation.
The transformer faults.
The main control board
faults.
FAULT DIAGNOSIS BY SYMPTOM
16
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