Samsung AM072BXV Series - Top Temperature Sensor Breakaway Error

Samsung Electronics 102
Troubleshooting
4-3-21 / / / Compressor Discharge or Top temperature sensor break-
away error
1.
Cause of problem
Re-insert sensor Re-attach sensor holder
No
Yes
Is the Discharge or Top temperature sensor and the
sensor holder correctly attached?
Defective sensor : Replace sensor
No
Yes
Is the Discharge or Top temperature
sensor resistance value reasonable?
(Refer to the “Note 1”)
NOTE1
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
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
Replace the PBA
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 24℃ 27℃
× × ◑ ◑ ◑ × ◑ ◑ ◑ × × ◑ ◑ ◑
※ ● : ON ◑ : Flash ×: OFF
Judgment
Method
1) Faulty compressor frequency of 60Hz or higher.
2) Suction temperature > Low pressure saturation temperature +10 ℃
3) Relevant discharge or Top temperature < High pressure saturation temperature

Cause of
problem
• Compressor discharge or Top temperature sensor breakaway and defective / Ineffective start of compressor
4-3 Appropriate Measures for Different Symptom (cont.)