Indoor Eva-In Temperature Sensor Error - Samsung AQV18UGAX Service Manual

12-2-3.Indoor Eva-in temperature sensor error

Indoor display ⊙
1.Checklist :
1) Is the indoor units temperature sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
Detachthe assembled sensor from the PBA sensor
2. Troubleshooting procedure
connector and measure the sensor resistance with
ohmmeter(tester)
Isthe sensor resistance value #3
10kohm ±3% at the room
temperature
of 25 ℃
YES
Connectthe sensor to PBA connector (4piin)
supply power and measure the voltage of #3
the connector
Below 0.5V or Over 4.5V?
NO
Micom error or connector check
YES
Exchangethe indoor PBA
Indoor
⊙ ○
error
-#4
-#4 in
Eva-in temp sensor
Sensor Replace
Sensorresistance value : 20
NO
YES
Exchangethe indoor PBA
℃ -12.09kohm
30℃ -8.31kohm
35℃ -6.94kohm
40℃ -5.83kohm
12-4