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Mary ReyesJul 31, 2025
What to do if Unitor Welding System has no output and yellow warning light?
- Ddenise03Jul 31, 2025
If your Unitor Welding System shows no output and a yellow warning light, it could be due to several reasons. The voltage protection might be activated because the input voltage is outside the range of 342 - 484V. Thermal protection could be activated if the duty cycle is too high; in this case, wait for the machine to cool down, then weld with more breaks or at a lower current. Also, check for obstructions hindering cooling airflow, heat development in loose electrode holder or ground cable connections, a broken fan (repair or replace if needed), or excessive dirt in the power source compartment (clean it out).
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