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SAMSUNG ELECTRONICS
10-2-2 Indoor temperature sensor Error
Indoor display
7 SEG DISPLAY DESCRIPTION
C121 Indoor room 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 assembledsensorfrom the PBAsensor
connectorandmeasurethe sensorresistancewith
ohmmeter(tester)
YES
Exchange the indoor PBA
YES
Exchange the indoor PBA
NO
NO
Is the sensorresistance value
10kohm±3% attheroom temperature
of 25°C
YES
Ass'y Sensor Replace
Sensorresistance value : 20°C- 12.09kohm
30°C - 8.31kohm
35°C - 6.94kohm
40°C- 5.83kohm
Connectthesensor to PBA connector (6piin)
supply powerand measurethe voltage of #1-#2 in
theconnector
Below 0.5V orOver4.5V?
Micomerror orconnector check
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