Sounds as though you leave your water pressure turned on while you are gone away. We have the same type set up, but we usually turn the water off whenever we leave after the weekend. Have not had any problems with ours in either camper:
Originally Posted by mcmanus07
This toilet is in my 2012 Cherokee and the camper is permanently parked and sometimes when the weather is bad the electric at the campgrounds will go out which shuts down the Well pumps from the campgrounds so then no water . Well my toilet will let water drip into the toilet until it fills and over flows and Thetford says its a low pressure problem and their valves are good from 40-100 lbs. of water pressure so has anyone else had this problem?