Samsung AVMKH020EA0 Service Manual page 194

8-2-14. Discharge temperature sensor error (open / short)
Outdoor unit display
Indoor unit display
Judgment method
Causes
Is outdoor unit discharge
temperature sensor connector
departed from PCB?
Separate the outdoor unit discharge
temperature sensor connector from PCB and
measure the resistance across
both terminals.
Yes
Is the resistance at the
time greatly out of those on 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
- 193 -
(Fan) (Filter) (Removing frost)
Yes
Connect the connector to
PCB and reoperate the unit.
Temperature
Yes
Since it is the outdoor heat
exchanger temperature sensor itself,
replace it.
Troubleshooting
Resistance
(˚C) (kΩ)
130 2.6
120 3.4
100 5.8
80 10.8
60 21
25 86
20 107
10 171
0 280
-10 475