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When check the cell of Hall circuit,do it under the condition of opening
the power,unrunning and connecting connector.
Faults & self-diagnoses
Indoor fan system abnomality
Check the fan
Check the rated voltage?
(21-28v)
Check the output of Hall circuit
Whether the voltage is 5v
between 1-3 or not?
When running the fan by hand:
whether there is impulse output
between 2-3.
Cell of Hall circuit is bad
The
fan can
move
No
Yes
Move it by hand
It can move easily
Check the voltage of
fan motor?
Yes
Yes
Yes
No
No
No
No
No
Yes
Yes
Check if the fan capacitor
PCB fault
PCB fault
Change the PCB
Change the fan motor
Change the capacitor F
Change the motor
Change the indoor PCB
Re-install the cross fan
Change fan motor
the lead of Hall circuit cell
Indoor fan motor winding resistance
(Black) (White) (Red)
1-3 : 510
Ω
1-5 : 320
Ω
1
2
3
1
3
5
Power
Signal Earthing
(Brown) (White) (Black)
