4-3- Indoor Heat Exchanger Temperature Sensor ErrorWhen Is Diplayed - Samsung AS12 XAX Series Service Manual

4-3-2 Indoor Heat Exchanger Temperature Sensor ErrorWhen
1. Checklist :
1) Is the indoor units temperature sensor connected correctly?
. Troubleshooting procedure
Detach the assembly sensor from the
ASS'Y PCB CN43 connector and measure
the sensor resistance of #3 and #4 with an
Is the sensor resistance value
10KΩ ±3% at the room temperature
Connect the sensor to CN43,
supply power, and measure the voltage of
#3 and #4 of the CN43 connector.
MICOM Error or Connector(CN43) check
4-6
ohmmeter (tester).
of 5°C?
Yes
Below 0.5V?
No
Over 4.9V?
No
ASS'Y Sensor Replace
SENSOR Resistance Value : 0°C-1.09kΩ
No
Yes
Poor ASS'Y PCB Replace
Yes
Poor ASS'Y PCB Replace
is diplayed
30°C-8.31kΩ
35°C-6.94kΩ
40°C-5.83kΩ
Samsung Electronics