No Welding Current (Overtemperature - Breaker)

Thermostatic Circuit Breaker Tripped

Fronius · TPS i Welding Machine

What does No Welding Current (Overtemperature - Breaker) mean?

The welding machine is displaying an overtemperature status and not generating welding current. This is caused by the internal thermostatic automatic circuit breaker tripping to protect the unit from excessive heat.

Common Causes

  • Internal overtemperature condition.
  • Thermostatic automatic circuit breaker has tripped.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Allow the welding machine to cool down completely; the circuit breaker will reset automatically after the cooling phase.

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Verified technical data. Last updated: March 2026

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Source: Fronius TPS i Welding Machine