Compressor Trouble; Pre-Inspection - Samsung RS20NCSL Service Manual

11-2. Compressor trouble

Pre-inspection

1. If compressor is off by refrigerator temperature, it is not run within five minutes minimum.
2. Compressor is not run during the defrost.
3. If the freezer sensor is not connected, compressor is not run due to low temperature detection.
Is occurred the forced start alarm?
end of coil of compressor relay(RY72) on the
Exchange the main PCB
Exchange compressor relay on
the PCB
Check the connection of the lines of main PCB part
and compressor surrounding OLP, relay PTC
Start
Have passed 5 minutes after cut off?
Y
Is compressor run at the forced start?
N
Is impressed DC 12V to the both side
main PCB?
Y
Is impressed between the gloomy line
and red line of CN70 AC 220V?
Y
N
Check after 5 minutes
Y
Is the freezer/refrigerator
temperature detection sensor normal?
Y
Check power cord connection
37
N
Exchange inferior
sensor