I have a tefauwe 5813 hand. It's stuck in grind mode and won't come out. I went to change my cover lens because it's gotten super dirty from FCAW. I went to weld and noticed the red grind mode button continues to flash. When I cover my hand on the sensors, it activates like it wants to switch, but it doesn't acknowledge (flash once) and the grind mode light is still flashing. It's practically useless at the moment. Not sure if it's under warranty.
