Three-phase numerical gap will jump more than 2V voltage alarms, you can manually change to 3 v, will still jump alert to open the oven door to check whether the heater has a short circuit within the insulation?
Three-phase voltage value difference of more than 2V above will jump alerts, you can manually change the 3V, the alarm will still jump, then we should open the door to check whether the heater insulation within a short circuit?
The three-phase voltage gap of more than 2V will jump numerical alerts, you can manually change the 3V, still can jump alarm if you want to open the door to check the insulation layer in the heater is a short circuit?