[Cause]
This alarm reports a change in wear. It shows the transition from the previous 2-step measurement to the current 2-step measurement. If the latter has increased, new electrode tips have been installed. If the values have changed very little, the wear ratio update cycle is too short.
[Countermeasure]
When replacing welding tips, always set the new welding tip flag before measuring wear. Update the wear ratio after several tip dressing cycles.