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Richard GoldenAug 3, 2025
What to do if Kemppi HiArc M 400R overheats and shows Err 4?
- JJonathan BurtonAug 3, 2025
The Kemppi Welding System may have stopped working due to overheating or exceeding the duty cycle. Ensure unrestricted airflow for cooling. If the duty cycle has been exceeded, the fan should start, and the machine will recover in a few minutes. If the problem persists, contact a Kemppi service representative.