[Cause]
PowerWaveErrorCode No.42 occurred. The circuit disconnected after detecting earth leakage. Arc current flowed to the ground wire.
[Countermeasure]
Check that the workpiece cable is connected correctly to the welding fixture. If the problem persists, before performing any other operations (power-off or jogging) after this alarm occurs, use the abnormal-state recording function ("Abnormal State Record" in the auxiliary menu) to obtain an image backup and contact the service center. If that function cannot be used, record the conditions and operating steps up to the alarm, obtain an image backup, and contact the service center.