This is my first question posted to this group and I've done some searching, but have not found the answer. The title pretty much sums it up. It just recently happened and has not repeated. The tank sensors showed full when a week earlier it was at 1/3. During that week, the valve was set to "city." A water leak bypassing the value? I do believe the sensor is correct because we have been using the tank via the 12V pump and it is now down to 2/3 full. Thanks
Randy
Randy