Samsung AR09HSSDBWKNEU, Service Manual

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10-6 Samsung Electronics
10-2-5 Indoor fan motor speed detecting error (BLDC fan)
Indoor display
3-LED DISPLAY
7-SEG DISPLAY
DESCRIPTION
LED1 LED2 LED3
E154 Indoor fan error
{ {
◎
O
LED ON ◎ LED BLINKING
{
LED OFF
1. Checklist :
1) Is the indoor units fan motor properly connected with the connector(CN72)?
2) Is the AC voltage correct?
2. Troubleshooting procedure
NO
YES
Power off and Separate the Fan motor wire
from CN72 on Indoor PBA
Exchange the Fan
motor
YES
YES
NO
YES
YES
Does the fan rotate?
Is the fan error appeared again?
Is there short among
each pin #1~#6
Is the voltage of CN72 #1-#3 over 250Vdc
Is the voltage of CN72
#3-#5 and #3-#6 with in 1Vdc~15Vdc during
the operation?
Restart after power off.
Reassemble the fan wire and input the power again
PBA problem or Motor problem
Change the PBA first and check the operation
Exchange the Fan motor
NO
NO
NO
Terminate the
service
Follow the check procedure of Indoor unit
power supply error check
Exchange the Indoor PBA