Originally Posted by jimbet
Exited my Crusader 321RES a little while ago and found water under the unit. Went to the utility panel and found water dripping from the cap used to seal the fresh water holding tank. I have not put water into the tank; how/why is it filling up, especially to the point of overflowing? Thanks in advance for any help.
There is a check valve on your fresh water pump. It is probably stuck. Try disconnecting from the campground water source and run some water using the onboard pump. Then shut it off and drain the fresh water tank. Re-connect the campground water source and see of the tank fills again. If it continues, the pump will need servicing.