Haier HSU-09H03/R(DB) [80/131] Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred

Haier HSU-09H03/R(DB) [80/131] Be sure to turn off power switch before connect or disconnect connector or else parts damage may be occurred
Troubleshooting
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Be sure to turn off power switch before connect or disconnect connector, or
else parts damage may be occurred.
Does fan rotate
smoothly?
NO
Replace fan motor
Yes
Turn power ON and operate fan
Does it rotate?
No
Yes
Turn off power supply and disconnect
fan motor connector,then turn power
Check output of fan motor connector
Is motor power voltage
DC310V gengerated?
Replace indoor unit
PCB
NO
Yes
Stop fan motor
Is rotation number
command pulse
generated?
Is motor control power
voltageDC15Vgenerated?
Is rotation number
commamd voltage
DC16V
generated?
Replace fan
motor
NO
Replace indoor unit
PCB
Yes
Yes
Replace indoor unit PCB
No
No
Replace indoor fan motor
Yes
Turn off power supply
and rotate fan by hand
Demastic Air Conditioners
+6809,12H03/R(DB)
System Diagnosis
77

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