Checking Temperature Sensor - Samsung AR07CSDAFWKN Service Manual

Troubleshooting

4-6-7 Checking Temperature sensor

4-6-7-1 Checking Compressor OLP and Discharge temperature sensor
1. Check items
1) Is the sensor connected correctly?
2) Is the sensor placed correctly?
3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature?
4) Is the resistance value of sensor connection pull-up correct?
2. Check procedure
Is the sensor connector
connected correctly in accordance with
a color?
Is the sensor resistance
value 200kohm±3% at the room temperature
of 25°C?
Connect the sensor to PBA connector
supply power and measure the voltage of
sensor in the connector.
Below 0.5V or Over 4.5V?
Micom error or connector check.
Exchange the Outdoor PBA.
4-50
Yes
Yes
No
Yes
No
Reconnect the sensor connector.
Sensor Replace
No
Sensor resistance value : 20°C - 242kohm
Yes
Exchange the Outdoor PBA.
600
500
400
300
200
100
0
0 20 40
Temperature[℃]
30°C - 166kohm
35°C - 138kohm
40°C - 115kohm
60 80 100 120 140
Samsung Electronics