Samsung AM072/096/120/144FXVAFH, Service Manual

Page: 209 / 295

Troubleshooting
4-112 Samsung Electronics
4-4-53 Hall IC(Fan) error
Outdoor unit
display
(FAN PCB(FAN1))
(FAN PCB(FAN2))
Judgment
Method
∙ Fan rotation defective or vibration and noise of the defective operation.
∙ Hall IC there is no signal input.
Cause of
problem
∙ Connection status error.
∙ Hall IC wire disconnection.
∙ Defective circuit parts and defective manufacturing.
∙ Fan Motor defective.
1. Cause of problem
Replace Fan PCB
Restart
When the error is repeated,
replace the Fan Motor.
End of Service
No
Yes
Yes
Did the error occurs?
Check the connecting wire and restart it.
No
Yes
Connection wire of
HALL IC did confirmation?
(Verify that the wire folded, or the connection is
detached.)
Check the connecting wire and restart it.
No
Yes
HALL IC on the PCB is connected correctly?
Power Off / Power Restart
FAN Motor Connector
Hall-sensor Connector
[FAN PCB]
Hall-sensor Connector