Troubleshooting
4-16
Samsung Electronics
When indoor fan motor error code (top) "
"/ (middle) "
"/(bottom) "
" is
indicated on the
indoor temperature display area
(cont.)
1. Cause of malfunction
1) Faulty internal circuit of internal fan motor
2) Faulty motor wire or Main PBA
3) Faulty motor due to disconnected internal fan motor connector while being supplied with power
2. Check procedure
Turn on the main power switch
Does fan rotate ?
No
Yes
Remove the main power and disassemble fan
motor wire from CN40 of POWER PBA.
Exchange faulty
motor
Is there SHORT from FAN MOTOR WIRE PIN
#1 to #6?
After reassemble fan motor wire, turn on the main power switch.
Yes
Is the voltage of PIN
#3 and #1 of power PBA CN40
DC280V~DC310V?
No
Exchange faulty POWER PBA
Yes
Is the voltage of PIN
#3 and #4 of MAIN PBA CN201 /CN200
DC15V±1V?
No
Exchange MAIN PBA
Yes
Is the voltage of PIN
#3 and #5 of MAIN PBA CN200/CN201/CN202
DC2V~DC3V?
No
Exchange MAIN PBA
No
Is the voltage of PIN
#3 and #6 of MAIN PBA CN200/CN201/CN202
DC8V~DC9V?
Yes
No
Faulty POWER PBA and MOTOR
- Judgement of faulty Trial & Error component
∗
At fitst exchange POWER PBA. Neverthelness, faulty
continues and exchange the MOTOR.
Measurement of Voltage
Measurement of Voltage
Measurement of Voltage
Measurement of Voltage
