Samsung AR09FSSYAWTNEU, Service Manual

Page: 57 / 99

2 2 1 E y a l p s i d r o o d n I
Indoor Eva-in temp sensor
error
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 #3-#4
10kohm ± 3%
ĂƩ
he room
temperature
of 25
Sensor Replace
Sensor resistance
value : 20 - 12.09kohm
30 - 8.31kohm
35 - 6.94kohm
40 - 5.83kohm
ŽŶŶĞĐƩ
he sensor to PBA connector (4piin)
supply power and measure the voltage of #3-#4 in
the connector
NO
YES
Below 0.5V or Over 4.5V?
Exchange the
indoor PBA
NO
YES
Micom error or connector check
YES
Exchange the indoor PBA
YES
Samsung Electronics
12-2-3
12-2- Indoor Eva-in temperature sensor error
2.set power on,and check the voltage
of the CN43(PIN3,PIN4)
the voltage is between 0.5V and 4.5V.
1.remove the temprature sensor
and check the resistace
sensor resistance value as follow: