What to do if my HBS Welding System shows a continuously red display 'Er'?
- DDennis NelsonAug 17, 2025
If the HBS Welding System displays a continuous red 'Er' message, it indicates a discharge relay control issue. Try switching the stud welding unit off, waiting a few seconds, and then switching it back on. If the unit remains locked, switch it off and contact the responsible service department.









