513 StarCool Alarm Codes And Actions

513  Compr overload
Description Compressor Overload Alarm
Cause Indication of problems with compressor
Trouble
shooting		 Possible causes:

  • The FC cannot deliver enough power to the compressor.
  • Check compressor terminal block resistance.
  • Insufficient cooling for the FC.
  • Defective compressor.

Trouble shooting:

 At very high ambient temperatures and very low setpoint temperatures, the FC
may get too hot to generate enough power. Therefore it can be cooled by the
refrigerant in the compressor.

  1. Try to correct the error by uploading the latest software version to the controller.
  2. Check refrigerant level + Veco operation.
  3. Check that all bolts fixing the FC to the compressor are properly tightened and nothing is jammed between the FC and the compressor.
  4. Check the motor cable and replace it if it is defective. Clean both FC + Compressor surface. Tighten bolts properly for better cooling (Apply thermo paste if available).
  5. Compressor coil resistance:

V-Y 1.15 Ω
U-X 1.15 Ω
W-Z 1.15 Ω

Also ensure to check to ground
Meggering:
Value above 5 MΩ = OK
Value below 5 MΩ = Remove terminal block and measure again, directly:
the compressor

  • If value still below, replace compressor
  • If above replace terminal block (only).


6. The compressor is wearing down and drawing increasingly power from the FC.
Criteria Compressor overloaded. Current has been above 24 Amp for 20 sec.
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