What to do if Daihen OTC Welbee Inverter W400 Welding System phase W of input voltage is not connected?
- MMichael GentrySep 8, 2025
If phase W of the input voltage for the primary side of your Daihen Welding System is not connected, check that there is no problem in the input voltage for the primary side and in the cable wiring. The error code will disappear when the power switch is turned off.