No Welding Current (Limited Cooling Air)
Limited Cooling Air Supply
Fronius · TPS i Welding Machine
What does No Welding Current (Limited Cooling Air) mean?
The welding machine indicates overtemperature and fails to produce welding current, which is a symptom of insufficient cooling. This can occur if the airflow to the internal components is restricted.
Common Causes
- Limited supply of cooling air to the welding machine.
- Cooling air ducts are obstructed.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect all cooling air ducts for blockages and ensure they are fully accessible.
- 2
Verify that there is sufficient clearance (e.g., 0.5 m / 1 ft. 8 in.) around the device for proper airflow.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius TPS i Welding Machine