No Indicators Lit (Mains Fuse)

Mains Fuse Protection Tripped

Fronius · TPS i Welding Machine

What does No Indicators Lit (Mains Fuse) mean?

The welding machine's indicators are not illuminated when the device is powered on, indicating that the mains fuse protection has activated, likely due to an overcurrent condition.

Common Causes

  • Mains fuse protection has tripped.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Change the mains fuse protection for the supply line.

Browse all codes in this manual (34)
Verified technical data. Last updated: March 2026

Related Faults

No Indicators Lit (Mains Lead)Mains Lead Break/UnpluggedNo Indicators Lit (24V Short)24V SpeedNet/Sensor Short CircuitCurrent limit exceeded!Current Limit Exceeded
Source: Fronius TPS i Welding Machine
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