Samsung AM009KNQDCH/TC - Comp. down Due to Compressor Discharge Temperature Sensor

Troubleshooting
Samsung Electronics 383
4-4-59 : Comp. Down due to Compressor Discharge Temperature sensor
1.
Cause of problem
Is the resistance
value normal for the Compressor
Discharge Temperature sensor?
(Refer to E251)
Commissioning
Are all service valves open?
Are the Indoor Unit
and Outdoor Unit EEV normally
operating?
Are there
any blockage inside the pipe?
(filter etc.)
Check the refrigerant amount.
Replace Compressor Discharge
Temperature sensor
Open the Service Valve
Check the relevant EEV
Pipe inspection
Connect S-net and Manifold Gauge.
(essential requirement)
No
No
No
Yes
Ye s
Ye s
Ye s
No
Outdoor unit display
Indoor unit display
Criteria
 When value of compressor discharge temperature sensor is checked at 120°C or more
Cause of problem
 Refrigerant shortage
 Electronic expansion valve is blocked.
 Service valve blocked
 Defective discharge temperature sensor
 Blocked pipe and defective
 Leakage of compressor discharge check valve of not-go-end outdoor unit