Samsung AR12FSFPESNNEU Service Manual page 58

Detach the assembled sensor from the PBA sensor
connector and measure the sensor resistance with
ohmmeter(tester)
Is the sensor resistance value #1 - #2
10kohm 3% at the room
temperature
of 25
Connect the sensor to PBA connector (4piin)
supply power and measure the voltage of #1-#2 in
the connector
Below 0.5V or Over 4.5V?
NO
Micom error or connector check
YES
Exchange the indoor PBA
10-
YES
Sensor Replace
Sensor resistance value : 20 - 12.09kohm
NO
YES
Exchange the indoor PBA
30 - 8.31kohm
35 - 6.94kohm
40 - 5.83kohm