Samsung RF28HDEDBSR Service Manual page 90

TROUBLESHOOTING
4-2-8. When Compressor does not run (Inverter COMP.)
Forced Operation signal sound
should be checked
0~800Hz 50%
Duty
Signal Output
1) Check the wire harness
2) Replace the MAIN PBA
No
Is AC 115V applied to
Check the Noise
Filter & Power Cord
Make sure the connector is
When Forced Operation
Refer to the TEST
mode is activated, COMP
Function in this manual
Yes
No
(CN103 #1 <>#3) is about
No
Is DC 15V applied to
CN101?
Is DC 5V applied to
Yes
plugged properly.
COMP Connector (CN102)
COMP ASS'Y is Good
Start
10 minutes have
No
passed since COMP
was off
Yes
No
operates
Yes
COMP operation signal
DC2~3V
Yes
ZD501?
Yes
No
C108(C110)?
Make sure the connector is
Yes
No
is Good?
Yes
1) Check the COMP Wire
2) Check the Compressor
No
Yes
Replace COMP ASS'Y
Normal
90
Check in 10 minutes
F-Sensor is Good
Yes
Temperature sensing
part of MAIN PBA is
Good
Yes
Replace MAIN PBA or
Repair the connection
plugged properly.
No
Replace F-Sensor
No
Repair the sensing
part or Replace
MAIN PBA