Suspension Of Starting Due To Compressor Discharge Temperature Sensor; Top Temperature Sensor - Samsung AM072BXV Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-32 : Suspension of starting due to Compressor discharge temperature sensor / Top temperature sensor
Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation
Indoorunit
display
×
※ ● : ON ◑ : Flash ×: OFF
Judgment
• When value of Compressor discharge temperature sensor / Top temperature sensor is checked at 120℃ or more
Method
• Refrigerant shortage
• Electronic expansion valve is blocked.
• Service valve blocked
Cause of
• Defective discharge temperature sensor
problem
• TOP temperature sensor defective
• Blocked pipe and defective
• Discharge check valve leaking on outdoor unit that is off
1. Cause of problem
value normal for the
Compressor discharge Temperature sensor/

Top temperature sensor?

(Refer to "NOTE 1")
Auto Trial Operation
Are all service valves open?
Are the Indoor Unit
and Outdoor Unit EEV normally
any blockage inside the pipe?
Check the refrigerant amount.
Samsung Electronics
Defrost Timer Fan Filter/MPI
× ◑ ◑
Is the resistance
Yes
Yes
operating?
Yes
Are there
(filter etc.)
No
Cassette (4/Mini4 Way)
Operation Defrost
◑ × ◑
No
Replace Compressor discharge temperat
-ure sensor / Top temperature sensor
Connect S-net and Manifold Gauge.
No
No
Yes
Resistance value Resistance value
measure part measure part
TOP1
TOP1 CN43(3,4)
TOP2 CN45(5,6)
DIS1 CN43(1,2)
DIS2 CN45(3,4)
Wall-mounted (NeoForte)
Timer Filter Operation
◑ ◑ ●
(essential requirement)
Open the Service Valve
Check the relevant EEV
Pipe inspection
NOTE1
Temperature(°C)
130
120
100
80
TOP2
60
25
20
10
0
Timer Turbo
◑ ◑
Resistance(KΩ)
8.9
11.2
18.5
32.0
59.0
200.0
242.0
362.0
553.0
113