1) The hot water tank area behind the access panel on the outside  also has locations (hot water tank pressure release valve, anode rod, heating element area) that can leak.

2) Low Point Drains.  If there are not sealed, water could be dripping from the low point drains underneath as well.

Thank you!

Notice how it connects to a valve (the circular shaped white piece directly beside the blue colored connector) - there is a little lever under there  you can flip 90 degrees (when you need to winterize etc).  It is currently in the "tank" position...which lets water flow from the fresh water tank into the pump.  By flipping that valve (pointing towards the short hose) the pump will now pull from the open end and the pump no longer draws from the water tank.

If you find it is running often, you may have a leak somewhere.  Turn on the pump and just check everywhere possible - hot water tank area, toilet, shower (and the valves behind the shower controls), under the sink etc.  Any slow leak (a dripping faucet or shower head, or a little dribble of water into the toilet etc.) will cause the pressure to drop and then eventually the pump ramps up the pressure again.

That said, I had the same problem and I could find nowhere it was leaking.  I eventually removed the pump (thinking it was faulty) and completely disassembled it (it is pretty easy....just carefully note where all the wires and screws go) and cleaned/checked the rubber diaphragm inside (I found nothing obviously wrong) but after re-assembling it all the problem went away...  I assume there was maybe some debris or something not sealed correctly.

Hard to tell from the picture, but you might even be able to disassemble the pump right there without disconnecting any hoses or removing the pump at all.  All the screws seem to be accessible.  Someone more knowledgeable here may have some advice.

Here is a video that goes over some disassembly....

https://youtu.be/XaJjU09ygmU

I'm a new owner of a used 2015 178 r-pod and have a question about the water pump constantly running. I use it off battery and propane, pressurized the water system, but the pump keeps running every few minutes. So I turned it off unless using water. I checked the water filter but it looks clean and undamaged. Then I noticed a disconnected hose but I couldn't see any place to connect it. I drove on a rocky dirt road so maybe it vibrated loose but I can't find anyplace to re-attach it. I included a photo and noted hose with yellow. Is this normal?

Thank you!

-shirley