Samsung EH052EAMC Service Manual page 69

Troubleshooting
12-3-2 Outdoor heat exchanger temp. sensor error(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine
Reason of error
Does the out heat exchanger
temp. sensor connected to PCB?
(CN41)
Measure the resistance value
between two terminals after separating
the out heat exchanger temp.
sensor connector from PCB
At this time, Is largely
deviate the resistance value from side
table value?
Check the out temp.
sensor is normal or not by use of
out data display part
➞ Check the temp. data is
normal or not after pressing K4 2 times.
At this time, is occurred the difference
between the out temp. and data?
Reoperation after PCB replacement
12-7
(Outdoor heat exchanger temp. sensor error(OPEN/SHORT)
(Operation) (Timer)
Disconnection and short of outdoor heat exchanger temp. sensor
Disconnection or leak of Applied sensor
Yes
No
Yes
(Airflow) (Filter)
No
Reoperation
after connect to
connector PCB
Yes
Outdoor heat exchanger
temp. is defective(replace)
No
PCB and sensor are
normal.
To perform the test
operation by one of K2
Temp. 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
Samsung Electronics