Samsung WALL MOUNTED TYPE Technical Manual page 120

When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is the indoor unit fan motor properly connected with the connector (CN73)?
(2) Is the AC voltage correct?
(3) Is HALL IC in indoor fan motor properly connected with the connector (CN43)?
(4) Is the running capacitor properly connected with the solder part of the PCB?
2) Troubleshooting procedure
After unplugging out the power cord should
Test rod location
+
SS71+
Test rod location
PCB CN73
Pin 3, Pin 5
121
Troubleshooting
be reconnected within five seconds.
YES
Does the operating lamp blink?
YES
Does the Solid State Relay(SS71) work
properly?
Normal
Voltage
-
SS71- 12V
YES
Is the supply voltage of the fan
motor sufficient?
Normal
voltage
Condition
.
Fan operate = AC 180V .
YES
NO
Check as in the procedur "NO power parts"
NO
NO
PCB is
out of order.
MF-C is out of order
Fan motor
is out of order.
Microcomputer is out of order.
Refer to replace PCB
module
Replace MFC
Fan motor
should be replaced.