Samsung FH18BTA(X) Service Manual page 77

Troubleshooting
12-3-2 Outdoor heat exchanger temp. sensor error(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine Disconnection and short of outdoor heat exchanger temp. sensor
Reason of error Disconnection or leak of Applied sensor
Does the out heat exchanger
temp. sensor connected to PCB?
(CN41)
Yes
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?
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 2 times.
At this time, is occurred the difference
between the out temp. and data?
Yes
Reoperation after PCB replacement
12-7
All manuals and user guides at all-guides.com
(Outdoor heat exchanger temp. sensor error(OPEN/SHORT)
(Operation) (Timer) (Airflow)
No
Yes
Outdoor heat exchanger
temp. is defective(replace)
No
(Filter)
Reoperation
after connect to
connector PCB
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