Samsung AR18NSWXCWKNCV, Service Manual

Page: 82 / 127

10-6 Sa m sung Electronics
10-2-5 Indoor fan m otor 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 m otor properl y connected with the connector(CN72)?
2) Is the AC voltage correct?
2. Troubleshooting procedure
NO
YES
Power off and Separate the Fan m otor wire
fro m CN72 on Indoor PBA
Exchange the Fan
m otor
YES
YES
NO
YES
YES
Does the fan rotate?
Is the fan error appeared again?
Is there short a m ong
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.
Reasse m ble the fan wire and input the power again
PBA proble m or Motor proble m
Change the PBA first and check the operation
Exchange the Fan m otor
NO
NO
NO
Ter m inate the
service
Follow the check procedure of Indoor unit
power suppl
y error check
Exchange the Indoor PBA