501 StarCool Alarm Codes And Actions

510  Compr connection
Description FC Earth Fault Alarm
Cause Indication of problems with cable, compressor or FC
Trouble
shooting		 Possible causes:

  • Isolation damaged on the FC power output to the compressor.
  • Defective FC.
  • Damaged cable and/or plugs.

Trouble shooting:

  1. Try to correct the error by uploading the latest software version to the controller.
  2. The power cable for the compressor motor (Mcpr) may have defective isolation. Check the cable and replace if it is defective.
  3. Measure resistance phase to ground (must be above 2 MW).
  4. The FC is defective and must be replaced. If there is no FC replacement available, the unit can be rewired for emergency operation: See “11. Emergency Operation” p. 54
Criteria Leakage current from phase to ground of FC. Current 3 A for more than 10 μsec (0.00001 sec)
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