Samsung AM072BXV Series - Compressor Discharge or; Top 1;2 Temperature Sensor Error

Troubleshooting
Samsung Electronics 101
4-3-20 / / / Compressor Discharge or Top 1/2 Temperature sensor
error
1.
Cause of problem
Yes
Compressor
discharge or Top temperature sensor
connector (CN43, CN45)
connected to PBA?
Is the resistor value matching with
“NOTE1” table?
After separating the Compressor Discharge or
Top Temperature sensor connector from the
PBA, measure the resistance value between
the two terminals.
Restart operation after replace the PBA
Restart operation after connecting
the connector to PBA
Replace this part as it is the defective
of the Compressor Discharge or
Top Temperature sensor itself.
Yes
No
No
NOTE1
Temperature(°C) 
130
120
100
80
60
25
20
10
0
8.9
11.2
18.5
32.0
59.0
200.0
242.0
362.0
553.0
Outdoor unit
display
(Compressor 1 Discharge) (Compressor 2 Discharge)
(Compressor 1 Top) (Compressor 2 Top)
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo
◑ × × ◑ × ◑ × ◑ × ◑ × ◑
※ ● : ON ◑ : Flash ×: OFF
Judgment
Method
• Detect according to temperature detected with the compressor discharge pipe temperature thermistor.
Cause of
problem
• Compressor Discharge or Top Temperature sensor defective. (Open/Short)
4-3 Appropriate Measures for Different Symptom (cont.)
TOP1
TOP2
TOP1 CN43(3,4)
TOP2 CN45(5,6)
DIS1 CN43(1,2)
DIS2 CN45(3,4)
TOP1 TOP2
Resistance value
measure part
Resistance value
measure part