Compressor Discharge Or Top Temperature Sensor Breakaway Error - Samsung AM072FXVAFH series Service Manual

4-4-21 Compressor Discharge or Top temperature sensor breakaway error

Outdoor unit display
Indoorunit display
※ ● : ON ◑ : Flash ×: OFF
1) Faulty compressor frequency of 60Hz or higher.
2) Suction temperature > Low pressure saturation temperature +10 ℃
Judgment Method
3) Relevant discharge or Top temperature < High pressure saturation temperature
4) In case of keep 30 minutes in state that satisfy all above conditions (1,2&3) for 30min.
Cause of problem ∙ Compressor discharge or Top temperature sensor breakaway and defective / Ineffective start of compressor
1. Cause of problem
Is the Discharge
or Top temperature sensor and the sensor holder
correctly attached?
Is the Discharge or Top temperature
sensor resistance value reasonable?
(Refer to the "Note 1")
Replace the PCB
Samsung Electronics
(Compressor 1 Discharge)
(Compressor 1 Top)
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
× × ◑ ◑
Yes
Yes
(Compressor 2 Discharge)
(Compressor 2 Top)
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
◑ ◑ ◑
×
No
No
Resistance value
Resistance value
measure part
measure part
TOP1 TOP2
TOP1 : CN43 (3, 4)
TOP2 : CN45 (5, 6)
DIS1 : CN43 (1, 2)
DIS2 : CN45 (3, 4)
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
◑ × × ◑
Re-insert sensor Re-attach sensor holder
Defective sensor : Replace sensor
NOTE1
Temperature(°C)
130
120
100
80
60
25
20
10
0
Troubleshooting
24℃ 27℃
◑ ◑
Resistance(KΩ)
8.9
11.2
18.5
32.0
59.0
200.0
242.0
362.0
553.0
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