517 StarCool Alarm Codes And Actions

517  FC over temp
Description FC Overtemperature Fault Alarm
Cause Indication of problems with compressor or FC
Trouble
shooting		 Possible causes:

  • FC operates at operating limits.
  • Insufficient cooling for the FC.
  • Defective FC.

Trouble shooting:

  1. Try to correct the error by uploading the latest software version to the controller.
  2. Verify that supply voltage is not too high.
  3. Check that the FC is mounted and tightened correctly to the compressor. If the FC is mounted correctly, it should not be possible to insert an air gap gauge between FC and compressor.
  4. Motor cable between FC and compressor may be jammed between FC and compressor. Cooling of FC is insufficient. If this alarm appears more than once: Dismount FC and check motor cable before mounting the FC again. Tighten bolts properly for better cooling.


If no FC replacement is available, the unit can be rewired for emergency

operation: See “11. Emergency Operation” p. 54
Criteria FC temperature exceeds +85°C (185°F), or above 78°C (172°F) for more than 15 min.
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