No Indicators Lit (Mains Lead)

Mains Lead Break/Unplugged

Fronius · TPS i Welding Machine

What does No Indicators Lit (Mains Lead) mean?

The welding machine's indicators are not lit, despite the mains switch being in the 'on' position. This indicates an issue with the primary power connection to the device.

Common Causes

  • Break in the mains lead.
  • Mains plug is not securely plugged into the socket.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the mains lead for any signs of damage or wear.

  2. 2

    Verify that the mains plug is fully and securely inserted into the power outlet.

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Verified technical data. Last updated: March 2026

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Source: Fronius TPS i Welding Machine