[Cause]
PowerWaveErrorCode No.43 occurred. The voltage between the two input capacitor banks (groups) is unbalanced, with the difference exceeding the limit. This error occurs at power-on if the welding machine has not been used for a long time, or if １ phase is missing from the 3-phase input. Failure of another switching board, main capacitor, or main transformer may also cause the error.
[Countermeasure]
Check the input line voltage. Check the reconnection link board and cables. Check the AC/DC system and welding circuit for short circuits. Check that the feed head is properly electrically insulated.