Trouble
Is the power applied to the
unit?
Check power supply mains or
interconnection wires
Is the power normal? check
the voltage between L&N of
terminal block
Check the wiring of indoor and
outdoor
Press the power ON/OFF button of
wire control or remote control
YES
YES
NO
NO
Does the beeper beep?
Is the display all off?
Check the connector on display
PCB connected to control PCB
Check the display PCB itself
Is the unit display normal?
Does outdoor unit run?
Does the compressor run
normally?
Check the failure code according to
the failure table
Normal
Check the compressor ,wires
and it
’
s capacitor.
YES
YES
YES
YES
YES
NO
NO
NO
Does the control ok?
Does the control
PCB ok?
Control failure
Control PCB failure
NO
NO
YES
NO
NO
Does the indoor unit
run?
Содержание NBFS-48IDU
Страница 3: ...1 Summary ...
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Страница 8: ...use of remote controller ...
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Страница 16: ......
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Страница 21: ...3 indoor explosive view for 40k ...
Страница 22: ...outdoor explosive view for 40k ...
Страница 24: ...5 CIRCUIT DIAGRAM 43K INDOOR ...
Страница 25: ...43K OUTDOOR ...
Страница 42: ...Floorstanding Air Conditioning Unit ...