I can not find or really need it so I prefer to bypass it and forget the problem because I check the water level each time before start upThe sensor isn't as easy to just remove or by-pass, senders may still be available from the dealer though, i got one a good 12 years ago now.
I thought it was the top left of the tank when looking at it from the back of the machine.I can not find or really need it so I prefer to bypass it and forget the problem because I check the water level each time before start up