Had a problem with a Wascomat 124. Customer called saying the machine wouldn’t start. When I get there the start switch would be about half way around to resetting and stop. I would reset it and try again and it would run fine for about a month. Did the same thing. This time I mess around with the door lock and adjusted the door. It worked again for a month or so. Replaced the start switch. Still didn’t fix it. One day it messed up when I was there. I took the front cover off and could see the pusher on the door lock was not extended and it should have been. I unhooked the wires going to it and checked the voltage coming from the delay unit. The voltage was low around 20 volts. Replaced the delay unit and no problems after that.