Fresh water tank filled when hooked up to water

[Ogsarg]

Just returned from a week long trip with 3 nights at Crater Lake NP. Had a site with full hookups, which is great since there are very few there and not available for reservations.

On the morning of departure, I woke up to see water coming out of the fresh water tank fill. I turned off the shore water and used up a bunch of the tank taking showers and such and drained a bunch more before departing.

The next day we were in Dayville, OR for a couple of nights. I connected to shore water there and it did not seem to be filling up while there.

the next night we were at an RV park on the way home and overnight the tank level increased somewhat but did not get entirely full.

I suspect there is a check valve somewhere to prevent this from happening and mine is starting to fail or perhaps has some debris in it that is keeping it from closing all the way.

Does anyone know where this is located on a 2011 Solera S? Or if you think it may be something else, please let me know. All suggestions welcome.

[Mikegjax]

Originally Posted by Ogsarg

Just returned from a week long trip with 3 nights at Crater Lake NP. Had a site with full hookups, which is great since there are very few there and not available for reservations.

On the morning of departure, I woke up to see water coming out of the fresh water tank fill. I turned off the shore water and used up a bunch of the tank taking showers and such and drained a bunch more before departing.

The next day we were in Dayville, OR for a couple of nights. I connected to shore water there and it did not seem to be filling up while there.

the next night we were at an RV park on the way home and overnight the tank level increased somewhat but did not get entirely full.

I suspect there is a check valve somewhere to prevent this from happening and mine is starting to fail or perhaps has some debris in it that is keeping it from closing all the way.

Does anyone know where this is located on a 2011 Solera S? Or if you think it may be something else, please let me know. All suggestions welcome.

I believe the check valve is in the pump.