Toilet fills by itself
Have a Thetford Aqua Magic V. Heard the waterfall as it went over the top. Made sense to replace the water valve. It didn't happen all the time, just every 10 or so flushes but filled so slowly that you couldn't hear it until it was too late. Two weeks later with the new valve in place it started happening again. Thought it might be the foot pedal cable or linkage bar to the valve this time. Thetford tech support said not likely but that this could happen if h20 psi is <40 or >60. So I set my regulator to 50(it was at 58). Any one heard of this before? We are full timers and move a lot but this is a brand new experience for us.