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Old 08-09-2017, 04:24 PM   #1
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Water pump issue

I can hear my water pump periodically turn on very briefly. I am hoping this is normal but suspect it is not.

I do not see any water dripping from the underbelly so suspect an internal leak in a check valve tied into the line?

Any experience with this issue?
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Old 08-09-2017, 05:04 PM   #2
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You either have a small leak somewhere, or the check valve is not fully seating and water is leaking back through it. You could try running water through the system for a minute or two and see if that flushes out the check valve.
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Old 08-09-2017, 05:14 PM   #3
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Originally Posted by rockfordroo View Post
You either have a small leak somewhere, or the check valve is not fully seating and water is leaking back through it. You could try running water through the system for a minute or two and see if that flushes out the check valve.


Thanks. I ran water for a minute. I will let you know if that fixed it. Is there more than one check valve?
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Old 08-09-2017, 06:15 PM   #4
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There's a check valve in the city water connection, but if it's leaking you should see it there.
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Old 08-09-2017, 06:23 PM   #5
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Water pump issue

I just checked in/around/under that area. No wetness or signs of water. We do not have water or sewer at our location, yet. Dry camping? Even though with this unit, I can't really come to calling it camping.

Current rumor has it that there will be no drill permits issued in WA State until the counties decide what they can/can't do because of a recent court decision on water rights.

Thank You, Rockfordroo.
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Old 08-09-2017, 06:34 PM   #6
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The check valve in question is part of the water pump. Debris can get in there and allow pressure to bleed back into the water tank-then the pump runs to build up pressure again. Often requires pulling the pump, disassembly and cleaning. The biggest challenge is usually getting to the pump. This varies with the model.
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Old 08-09-2017, 07:26 PM   #7
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Thank You, pjnlorrie. I thought as much.

However, I remain hopeful that running it for a while will clear up what has caused it. Meanwhile, DW has turned on the A/C and I can't hear it run. Maybe that is the solution.
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Old 08-28-2017, 10:31 AM   #8
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Thank You, pjnlorrie. I thought as much.

However, I remain hopeful that running it for a while will clear up what has caused it. Meanwhile, DW has turned on the A/C and I can't hear it run. Maybe that is the solution.
I have a 2017 WC.M. and had the same problem. My first weekend trial run after buying her new I heard the pump cycle briefly every 30 minutes or so. Didn't give it much thought and went to bed. During the night my wife woke me and said she was hearing a noise like water spraying. I, half awake, listened and could not hear anything and dismissed it as, well I won't go down that trail again, and went back to sleep. The next morning I noticed the pavement was wet under the cargo area. I opened the cargo doors and also discovered the carpet was soaked and I could hear a hissing sound coming from behind the water hook up panel. After removing the cargo access panel I discovered the plastic supply line fitting was loose on the back side of the outdoor shower valve and it was spraying water. Upon further inspection I discovered the plastic supply end screw on fittings to be a joke. They are all I'll fitting and because of the very fat silicone gasket the fitting will only grab about 2-3 threads. With a sharp pocket knife I reduced the thickness of the gasket washer by 50% then rethreaded the fitting. By doing this I was able to gain 5-6 threads and made the connection more secure and stop the leak. With my background in aviation I'm anal about inspections and preventative maintenance. I have since studied most of the plumbing in my coach and arrived at the conclusion NEVER hook up to a domestic water supply without a hose end pressure regulator installed.
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Old 08-30-2017, 01:18 PM   #9
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I have a 2017 WC.M. and had the same problem.
[snip]

I have since studied most of the plumbing in my coach and arrived at the conclusion NEVER hook up to a domestic water supply without a hose end pressure regulator installed.
Good point, we are the second owners, so...

It is currently boondocked 334 miles away, on our private, favorite, spot, water pump off. Just visited it yesterday for an overnight.

We have three million things to do before picking it up mid October for a 1200 mile trip. I have scheduled us there for two weeks so I can pull the pump, etc., before the trip.

We will be snow birding/house sitting until the end of December then moving further south to Yuma, AZ to see that area.
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