Samsung GH052EAM Service Manual page 23

Troubleshooting
4-4-3 Outdoor discharge temp. sensor error(OPEN/SHORT)
Outdoor unit display
Indoor unit display
How to determine
Reason of error
Is not separated the outdoor
discharge temp. sensor connector
from PCB?(CN42)
To 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?
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?
Reoperation after PCB replacement
22
Er → t3 (Outdoor discharge temp. sensor OPEN/SHORT error)
(Operation) (Timer)
Disconnection and short of outdoor discharger temp. sensor
Disconnection or leak of Applied sensor
Yes
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 use of K2
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
Samsung Electronics