516 StarCool Alarm Codes And Actions

516  FC supply error
Description Power supply error indication
Cause Indication of lack of phase
Trouble
shooting		 Possible causes:

  • Unstable power supply (Generator/Genset)
  • One or more phases are not applied to the FC.

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. Verify that all 3 phases are present and voltage is correct.
3. Verify that voltage difference between the 3 phases is less than (<) 20 V AC.

4. Try to upload the latest software version to the controller.
Criteria FC cannot maintain DC filter voltage (or too much ripple in DC voltage). AL 523 has been active for more than 50 sec.
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