522 |
FC high temp |
Description |
FC Overtemperature Warning |
Cause |
Indication of problems with compressor or FC |
Trouble
shooting |
Possible causes:
- FC operates at operating limits.
- Insufficient cooling for the FC.
- Defective FC.
Accompanied alarms:
Trouble shooting:
- Verify that supply voltage is not too high.
- Check that the FC is mounted and tightened correctly to the compressor. If the FC is mounted correctly, it should not be possible to insert an air gap gauge between FC and compressor.
- Motor cable between FC and compressor may be jammed between FC and compressor. Cooling of FC is insufficient. If this alarm appears more than once: Dismount FC and check motor cable before mounting the FC again. Fasten bolts properly for better cooling.
If no FC replacement is available, the unit can be rewired for emergency operation: See “Emergency Operation” p. 50 |
Criteria |
FC temperature has exceeded warning limit +78°C |
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