The PCB damaged and no
output.
The indoor temp-sensor has
been damaged.
Replace this indoor
tempsensor
The compressor
doesn’t work.
The compress connecting wire
is loose
supply voltage is too low.
install voltage regulator.
The capacitor of compressor
failed.
Check. Repair and replace this
PCB.
The compressor open circuit or
short circuit.
The overload protector has
been damaged
Replace this overload
protector
The remote have no power or
damaged.
replace the battery or remote.
The electric outlet failed.
missing phrase for supply
voltage.
supply voltage is too low.
install voltage regulator.
The voltage dependent resistor
has been burst
Change this voltage
dependent resistor
This AC can’t receive the
remote signal because of
receiving head or window
failure
Repair or replace this
receiving head or window
poor contact for socket connector
of PCB.
Check. Repair or replace this
PCB.
Replace this transformer.
The PCB damaged and no
output.
Unit suddenly
doesn’t work after
running some time.
Wait for the power supply
fuse of power supply burn out.
poor contact for the plug.
Check repair and replace the
plug and socket.
Have set regularly shutdown.
Repair or replace this PCB
electromagnetic interference
romove the plug and plug
again ,restart