Samsung AVMKH020EA0 Service Manual page 193

8
Troubleshooting
8-2-13. Outdoor unit heat exchanger temperature sensor error (open / short)
Outdoor unit display
Indoor unit display
Judgment method
Causes
Is outdoor
temperature sensor connector
departed from PCB?
Separate the outdoor heat exchanger
temperature sensor connector from
PCB and measure the resistance
across both terminals.
Yes
Is the resistance at
the time greatly out of those from
the right side table?
Replace the PCB and reoperate the unit.
(Operation) (Timer)
- Wire open or short of outdoor heat exchanger temperature sensor
- Wire open or current leak of related sensor
No
No
(Fan) (Filter) (Removing frost)
No
Connect the connector to PCB
and reoperate the unit.
Temperature
Yes
Since it is the defect of the outdoor
heat exchanger temperature
sensor itself, replace it.
- 192 -
Resistance
(˚C) (kΩ)
70 2.2
60 3.0
50 4.2
40 5.8
30 8.3
20 12.1
10 18.0
0 27.3
-10 43.0