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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

FUSE LED

Fuse Blown

Fanuc · R-30iB Mate + Mate Plus Robot

What does FUSE LED mean?

The FUSE LED illuminates when an internal fuse blows. This typically indicates an overcurrent condition that has resulted in the protective fuse activating.

Common Causes

  • The main power fuse for the control system or a specific module has blown, interrupting power to critical components.
  • An overload condition or a short circuit has caused the fuse to fail, indicating a potential electrical fault in the system.
  • The fuse may have reached the end of its lifespan and failed due to accumulated stress.
  • Incorrect fuse rating or installation can lead to premature blowing.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Identify and remove the root cause of the blown fuse.

  2. 2

    Replace the fuse.

Browse all codes in this manual (53)
Verified technical data. Last updated: April 2026

Related Faults

24EXTEmergency Stop Circuit 24V Fault24TTeach Pendant 24V FaultALM LED Blink (1:1)Broken Wire or Noise (Subsequent Unit)
Source: Fanuc R-30iB Mate + Mate Plus Robot
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