Fagor alarm 4003: Overtemperature at the drive (107)
CNC 8055 SERCOS drive error (DDS) · Fagor DDS drives
What it means
Drive standard error E107: temperature inside the drive enclosure (CPU/VeCon board area) is too high. The CNC executes its full stop sequence (enables off, program interrupted on all channels) with a category 1 controlled stop. Let the system cool and reduce ambient temperature before resetting.
Likely causes
- Blocked cabinet ventilation or failed cabinet/drive fan
- Ambient temperature above specification
- Drive working continuously near its current limit
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
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Cabinet / drive cooling fan kit
fan · Common cause
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DDS / AXD / SPD drive
drive · Check if others ruled out
Need the part urgently?
Send us alarm 4003 with your machine details — typical RFQ turnaround is 24–48h.