Tiffin wires the Entry level Motorhomes for water pump differently.
Entry level has NO controller and uses On OFF switches, Not momentary spring loaded. Also the controller system will have a RED led light next to each switch indicating if the pump is ON. Entry level will have daisy changed switches. IF ONE switch is ON, nothing you do with the other switches will turn the PUMP OFF. There is NO led light indicating this. This is similar to a Home hallway light switch. One side of the Hallway if the switch is up and ON the lights turn on in the ceiling. The other end of the hallway THAT switch will be DOWN. But unlike a home hallway switch there are 3 or more pump switches. 1 in the kitchen, 1 in the bath and 1 at the outside water bay panel. Does your model have the Red LED lights at each switch? IF you have a controller system and the controller was sticking, the LED lights should have been on if the pump was active. Doug