Poor Weld Properties (Contact Tip)

Wrong/Worn Contact Tip or Narrow Hole

Fronius · TPS i Welding Machine

What does Poor Weld Properties (Contact Tip) mean?

Poor weld properties result from using an incorrect contact tip, a contact tip that is worn out, or one with a hole that is too narrow for the wire electrode. This affects wire feeding and current transfer.

Common Causes

  • Wrong contact tip installed for the application.
  • Contact tip is worn out.
  • Hole in the contact tip is too narrow, impeding wire feed.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace the contact tip with a suitable one for the wire electrode material and diameter.

  2. 2

    Inspect the contact tip for wear and replace if necessary.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Fronius TPS i Welding Machine