Haier AU96NFTAHA Service Manual page 66

[11] Motor circuit (phase silicon control)
Start after
resetting, whether the indoor fan
runs later on
Yes
Whether the
connection of the connectors is
improper or broken
No
Whether the
pin 1-3 in CN18 has DC12-13V
output
Yes
When the
fan runs, whether the pin
2-3 in CN18 has the impulse signal of
fan output (DC2-2.5V)
[12] Indoor PCB circuit
whether the
power supply has interference
No
Check the indoor PCB, ifimproper, replace it
No
Yes
Whether the
connection of the connectors
of CN07 is improper or
broken
Whether the
capacitor is normal
Whether the
fan motor is mechanically
locked
No
Yes
Yes
63
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Yes Modify the connection,wiring
No
No
Replace capacitor
Yes
Yes
No
Replace fan motor
Check the indoor PCB;if improper, replace
Check the supply voltage,improve circuit,