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Indoor unit and outdoor unit don
Indoor unit and outdoor unit don
Indoor unit and outdoor unit don
Indoor unit and outdoor unit don
’
t operate
t operate
t operate
t operate
Indoor and outdoor unit
d o n
’
t operate
Press emergency key, does
the air conditioner
running?
Replace fuse of
indoor PCB .
Y E S
Y E S
Y E S
N O
N O
N O
N O
Make the power
supply ok.
Replace remote
control.
Y E S
N O
Replace remote
receiver or display
panel.
N O
Y E S
Y E S
Replace transformer.
Does the transformer has
output?
Does the fuse of indoor
PCB burn out?
Change a good remote,
does the air conditioner
running?
Is the power supply no
p ro b lem ?
Does the 1 2 V and 5V of
indoor PCB have ?
Replace PCB .
normal
Does the electric switch
cut off?
Does the electric switch
cut off after a few
nimutes?
Is the wires of indoor
unit and outdoor unit no
p ro b lem ?
Y E S
Reconnect the wires .
N O
Is the insulation
o f
indoor unit and outdoor
unit no problem ?
Y E S
Find the reason and
replace the failure
componet.
N O
Is the resistance
of each
main component no
p ro b lem ?
Rreplace the failure
componet.
N O
Y E S
Y E S
Y E S
