02002
Carrier Transicold
Critical

Low Discharge Superheat

Low discharge superheat detected; risk of liquid floodback to the compressor.

Possible causes

  • Electronic Expansion Valve (EXV) over-open
  • Defective liquid injection
  • Discharge temperature sensor failure
  • Excessive refrigerant charge

Recommended actions

  • Check EXV operation
  • Verify accuracy of temperature and pressure sensors
  • Check for refrigerant overcharge
  • Monitor injection valve operation

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