Samsung AQ09NSA, Service Manual

Page: 21 / 96

3-2-2 Room Pipe sensor Error
1. Check the assembly condition of the sensor connector(CN43) on the indoor unit Main PCB and if not assembled, reassemble
the connector accurately.
2. Detach the room pipe sensor connector(CN43) and check the resistance between Pin #3 and #4.
If the above data is not met, replace the room pipe sensor.
3. Assemble the room pipe sensor to PCB, plug in, and check the voltage of connector 3 and 4. If the resistance is below 0.5V or
over 4.9V, replace the indoor Main PCB. (short or disconnected in the PCB board)
Temperature(
˚C
) Resistance Value(Kohm) Temperature(
˚C
) Resistance Value(Kohm) Others
15 14.68 30 8.31
The data tolerance
is ±3%.
20 12.09 35 6.94
25 10 40 5.83
Alignment and Adjustments
Samsung Electronics 3-5
Description
LAMP
OPERATION TIMER TURBO
Indoor unit heat exchanger temperature sensor error
(open or short)