[Cause]
A communication error occurred while communicating with the welding equipment.
[Countermeasure]
1. Check whether other alarms occurred at the same time on the alarm history screen. If it has occurred, first take other alarm countermeasures and confirm whether ARC-046 is resolved.
2. Carry out welding after establishing communication with the welding power source. When communication with the welding power source cannot be established, refer to the countermeasures for ARC-045 to take appropriate measures.
3. Confirm whether an alarm occurs on the welding power source through LED on the welding power source. If this has occurred, please contact the service center after confirming the alarm number.