Compressor Down By Low Pressure Sensor Protection Control - Samsung AVXCSH023/032/040CE Service Manual

Troubleshooting
4-4-29

: Compressor down by low pressure sensor protection control

Outdoor unit display
Indoor unit display
Criteria
Cause of problem
1. How to check
Test operation
All the sub valves open?
The Cond out sensor resistance normal?
(Refer to E231.)
The outdoor/indoor EEV operates normally?
Clogging in the pipe? (ex-filter)
Check the amount of coolant.
4-123
×(Operation) (Timer) (Fan)
• The Cond out sensor temperature is detected below -35°C.
• Insufficient coolant, clogging in the motor.
• Bad compressor.
• Bad Cond out sensor.
• The outdoor compressor's Discharge Check Valve leaks.
• Exceeding the temperature limit (For heater operation, the outside temperature is below -20°C.
For AC operation, the outside temperature is below -5°C) Possibilities for errors.
Yes
Yes
Yes
No
(Filter) (Defrost)
Connect S-net to vacuum.(forceful)
No
Open the sub valve.
No
Replace the Cond out sensor.
No
Check the EEV.
No
Check the pipeline.
Samsung Electronics