Samsung AQ09NSA Service Manual page 22

Alignment and Adjustments
3-2-3 Indoor Unit Fan Motor Error
Description
Indoor fan motor mal function
1. Checklist :
1) Is the indoor unit fan motor properly connected with the connector (CN72)?
2) Is the AC voltage correct?
3) Is HALL IC in indoor fan motor properly connected with the connector (CN44)?
4) Is the running capacitor (CR71) properly connected with PCB board?
2. Troubleshooting procedure
After unplugging out the power cord should
be reconnected within 5 seconds.
Does the OPERATION lamp blink?
Does the Solid State Relay(SS71) work properly?
Test rod location
+
SS71- SS71-
Is the power relay RY71 operated by
adjusting the room temperature?
Test rod location
PCB CN72 Condition
pin #3 and #5 Fan operating
3-6
Yes
Yes
Normal
Voltage
-
12V
Yes
Normal
Voltage
About AC180V
Yes
OPERATION
No
Check as in the procedure "No Power".
No
Micom is
out of order.
No
PCB is
out of order.
Motor Fan-Capacitor is out of order
Fan motor is out of order.
LAMP
TIMER TURBO
Micom should be replaced
PCB should be replaced.
Replace Motor
Fan-Capacitor
Fan motor should be replaced.
Samsung Electronics