511 StarCool Alarm Codes And Actions

511  Compr over current
Description FC Overcurrent Alarm
Cause Indication of problems with compressor
Trouble
shooting		 Possible causes:

  • Unstable power supply (Generator/Genset)
  • The compressor motor draws too much current.
  • Defective motor cable, compressor or FC.
  • Condenser blocked due to dirt and residue.

Trouble shooting:

  1. If “Wait – Adapting to genset” is shown in display, unit is adapting to an unstable power supply Wait until adjustment is completed.

a. When “Wait – Adapting to genset” is no longer displayed and compressor is stuck on 60 Hz
b. Find a better power supply
c. Rewire to emergency operation until a better power supply can be connected, to avoid FC alarms

2. Turn off unit and wait 10 min. before turning on the unit again.
3. If the compressor cannot run or runs very short time before this alarm comes again, the compressor, motor cable or terminal block is defective and must be replaced.
4. Try to upload the latest software version to the controller.
5. If the compressor can run several min. without alarm, the motor cable, terminal block or FC may be defective and must be replaced if the alarm comes again.

6. Clean condenser.
Criteria FC overloaded. Current above 38 Amp for approx. 1 sec
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