Samsung FH18BTA(X) Service Manual page 78

12-3-3 Outdoor discharge temp. sensor error(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine Disconnection and short of outdoor discharger temp. sensor
Reason of error Disconnection or leak of Applied sensor
Does the outdoor discharge
temp. sensor connected to PCB?
(CN42)
Yes
Measure the resistance value
between two terminals after separating
the outdoor discharge temp.
sensor connector from PCB
At this time, Is largely
deviate the resistance value from
side table value?
No
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 1 times.
At this time, is occurred the difference
between the out temp. and data?
Yes
Reoperation after PCB replacement
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(Outdoor discharge temp. sensor OPEN/SHORT error)
(Operation) (Timer) (Airflow)
No
Yes
Outdoor heat exchanger
temp. is defective(replace)
No
PCB and sensor are normal.
(Filter)
Reoperation
after connect to
connector PCB
To perform the test
operation by use of K2
Troubleshooting
Temp. Resistance
(˚C) (kΩ)
130 8.9
120 11.2
100 18.5
80 32
60 59
25 200
20 242
10 362
0 553
12-8