Water pump randomly runs for short bursts
Greetings all, I've had two campers in my life and the first one I had was pretty rough and had lots of issues. One was that the water pump would randomly run for a second or so, which I didn't have...
Forum Discussion
TheLostBoy wrote:JimK-NY wrote:
No the pump can run even if all the faucets are off. One cause could be a slight leak. I would check the pump first. Slight leaks can occur with older pumps. Temperature changes can also cause the pump to run. If you turn off the hot water, pressure will slowly drop and the pump will cycle periodically to maintain the pressure. Changes in temperature can also do this even if the HW tank has not been heated. Temps dropping during the night can be enough to trigger the pump.
If the RV is not in use, it is easy to check for leaks. Pressurize the system and turn off the pump. If ambient temps are roughly constant, pressure should hold for at least a day or two and the pump will not run when turned back on.
What I'm afraid of is that it could be a leak inside the walls that I can't see. I don't have any water showing up anywhere that I can see (not around the pump either).
How do I measure the pressure in my lines?
Not sure on that or if it would be useful.
If the check valve does t fix it and you know the pump diaphragm is good consider “half splitting” the system. That involves putting a shutoff valve at a point you think is the half way point in the system. Then shut it off. If it still cycles you know the problem is in the first half the system.
Good luck.
