No Gas Shield (Regulator Fault)

Faulty Gas Pressure Regulator

Fronius · TPS i Welding Machine

What does No Gas Shield (Regulator Fault) mean?

The welding process lacks a protective gas shield, even though all other functions are operating correctly. This suggests a malfunction of the gas pressure regulator, which controls gas flow.

Common Causes

  • Gas pressure regulator is faulty.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace the gas pressure regulator.

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

Related Faults

No Indicators Lit (Mains Fuse)Mains Fuse Protection TrippedCurrent limit exceeded!Current Limit ExceededPoor Weld Properties (Inadequate Gas)Inadequate/No Shielding Gas
Source: Fronius TPS i Welding Machine
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