547
Thermo King
Critical
AC Bus Phase Loss
Indicates a phase loss in the system's alternating current bus.
Possible causes
- Blown input fuse
- Defective shore power connection
- Trouble in AC bus wiring
- Inverter or rectifier issue
Recommended actions
- Check voltage of the external power source
- Inspect high voltage fuses
- Verify tightness of terminals on the AC bus
- Measure phase cable continuity
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