845 StarCool Alarm Codes

845 Cpr pump down
Description Compressor pump down fault
Cause Indication of insufficient performance in the compressor
Trouble
shooting		 Possible causes:
  • Sensor defective (high pressure transmitter and or high pressure switch)
  • One or more valves defective.
  • Compressor needs repair.
Trouble shooting:
  1. Try to correct the error by uploading the latest software version to the controller.
  2. If alarm 250 is displayed check the high pressure transmitter settings and the high pressure switch.
  3. If only alarm 845 is displayed, check that there is sufficient refrigerant on the unit.
  4. If only alarm 845 is displayed, replace compressor valve plates.
Criteria Tc – T0 more than (>) 20°C.

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