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Trouble shooting
N O
Is the unit display
norm al?
Y ES
D oes outdoor unit run?
Y ES
D oes the
com pressor run
norm ally?
Y ES
D oes the indoor
unit run?
N O
Check the failure code
according to the failure
table
N O
Check the
com pressor ,w ires
and it' s
capacitor.
Y ES
N orm al
N O
Trouble
Is the pow er
applied to the unit?
Y ES
Is the pow er norm al? check
the voltage betw een L& N of
term inal block
Y ES
Press the pow er O N /O FF button
of w ire control or rem ote control
D oes the beeper
beep?
Y ES
Is the display all
off?
Y ES
Check the connector on display
PCB connected to control PCB
Check the display PCB itself
第 58 页 共 59 页
N O
Check pow er supply m ains or
interconnection w ires
N O
Check the w iring of indoor and
outdoor
D oes the control
ok?
N O
D oes the control
PCB ok?
Control PCB failure
N O
Control failure
Y ES
N O
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