Samsung AQ09MSBN Service Manual page 48

Alignment and Adjustments
3-2-1 Room temperature sensor Error
Indoor unit room temperature sensor error(open or short)
Detach the assembly sensor from the
ASS'Y PCB CN43 connector and measure
the sensor resistance with an ohmmeter (tester)
between Pin #1 and #2.
Is the sensor resistance value
10K ±3% at the room temperature
Connect the sensor to CN43,
supply power, and measure the voltage of
#1 and #2 of the CN43 connector.
MICOM Error or Connector(CN43) check
3-4
Error Mode
Yes
Below 0.5V?
No
Over 4.9V?
No
LAMP
ASS'Y Sensor Replace
No
SENSOR Resistance Value :
SENSOR Resistance Value :
SENSOR Resistance Value :
Yes
Poor ASS'Y PCB Replace
Yes
Poor ASS'Y PCB Replace
7-segment Display
Samsung Electronics