Product specifications

Troubleshooting
21Samsung Electronics
Test rod location
+
-
SS71- SS71- 12V
Normal
Voltage
5-3-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)
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
Yes
Yes
Yes
Yes
After unplugging out the power cord should
be reconnected within 5 seconds.
No
Check as in the procedure
"NO power parts"
No
Micom
should be replaced
Does the Solid State Relay(SS71) work properly?
Does the OPERATION lamp blink?
Micom is
out of order.
Test rod location
PCB CN72 Condition
pin #3 and #5 Fan operate
About AC
180V
Normal
Voltage
No
PCB should be
replaced.
Is the supply voltage of the fan motor sufficient?
PCB is
out of order.
Fan motor
should be replaced.
Fan motor
is out of order.
Replace Motor
Fan-Capacitor
Motor Fan-Capacitor is out of order
DB98_15924A(3)_1 4/6/04 3:00 PM Page 21