Samsung AS12SGGE Training Manual page 93

8
TROUBLESHOOTING
Troubleshooting for Non Inverter Heat Pump
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 properly connected with PCB board?
2) Troubleshooting procedure
After unplugging out the power cord should
be reconnected within five seconds.
Does the OPERATION lamp blink?
Does the Solid State Relay(SS71) work
Test rod location
+
SS71+
Is the supply voltage of the fan
motor sufficient?
Test rod location
PCB CN73
Pin #3 and
Pin #5
92 | SAMSUNG
YES
YES
properly?
Normal
Voltage
-
SS71-
12V
YES
Normal
voltage
Condition
Fan operate
about AC 180V
YES
(12K)
(Cont.)
NO
Check as in the procedur "NO power parts"
NO
Microcomputer is
out of order.
NO
PCB is
out of order.
MF-C is out of order
Fan motor
is out of order.
Microcomputer
shoud be replaced
Refer to replace PCB
module
Replace MFC
Fan motor
should be replaced.