Indoor Temperature Sensor Error; Samsung Electronics - Samsung AR09FSSYAWTNEU Service Manual

12-2-1 Indoor temperature sensor error

n I o d r o d s i l p y a
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?
2. Troubleshooting procedure
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% he room
temperature
of 25
YES
he 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
1.remove the temprature sensor and check the resistace sensor resistance value as follow:
2.set power on,and check the voltage of the CN43(PIN1,PIN2) the voltage is between 0.5V and 4.5V.

Samsung Electronics

Indoor temperature sensor error
Indoor room temp sensor
1 E 1 2
error
NO
YES
Sensor Replace
Sensor resistance value : 20 - 12.09kohm
30 - 8.31kohm
35 - 6.94kohm
40 - 5.83kohm
Exchange the indoor PBA
12-2-1