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Old 01-08-2019, 09:19 PM   #1
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Pump cycles after all faucets off.

Two nights before departing central Oregon I failed to leave the furnace on and yes the plumbing froze. Now I have an air leak? that manifests itself as an intermittent pump cycle well after all the faucets are off. So have you experienced this issue and if so where did you locate the cracked plastic connector? Or was it something else? Not a trip breaker but could be annoying over the next few months as we travel the SW. Thank you for your thoughts.
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Old 01-08-2019, 09:33 PM   #2
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Os it an air leak or a leak?

I had a very small leak under my faucet. The pump would cycle on about every 2 hours. If the leak wasn't somewhere obvious, it would have been quite hard to find as it only dripped about 4 drips in an hour. That was enough to start the pump.
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Old 01-08-2019, 09:44 PM   #3
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Yes I've had similar...'cept it WAS a deal breaker, AT 5AM

The pump is now on only when water is needed, off at night and whenever the trailer has no humans in it.🥴

As noted if it's a small leak and only cycles once in a while, use the pump as on demand, and search when it's more convenient.👍

Bob
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Old 01-09-2019, 07:45 PM   #4
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No visible leak anywhere so suspect a small crack in a plastic fitting. Thanks Bob for your insight. We are “on demand” for now when not on shore connection.
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Old 01-09-2019, 07:47 PM   #5
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Btw: the pump cycles about every 10 seconds.
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Old 01-09-2019, 07:50 PM   #6
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Make sure the caps to your water tanks are on tightly, in case that is the source of the pressurization, and try to find your leak as you don’t want water accumulating anywhere.

Be sure to check the back of the toilet. I have just had the water feed on mine replaced.

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Old 01-09-2019, 07:57 PM   #7
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Can you see any water leaking from underneath ...?
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Old 01-09-2019, 08:03 PM   #8
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Sounds like you have a leak, not an air leak, a water leak. You might want to try and trace all your plumbing to see where the leak is. Check the pump fittings, outside shower head. Take the time to look it over. Maybe put the system under pressure and look/listen both in cabinets, and outside to try and track it down.
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Old 01-09-2019, 08:16 PM   #9
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👍Yep...look for the drips, not here...in the AS 😂

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Old 01-09-2019, 08:21 PM   #10
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Our water pumps check valve was leaking which caused a pressure drop. Then the pump would start. Replaced the pump. That fixed the problem.
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Old 01-09-2019, 08:22 PM   #11
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Quote:
Originally Posted by SpinWhite View Post
Our water pumps check valve was leaking which caused a pressure drop. Then the pump would start. Replaced the pump. That fixed the problem.
OP says his is cycling every 10 seconds, my bet is that's not a check valve.
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Old 01-09-2019, 08:52 PM   #12
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When I hook up shore water to the Airstream with a full tank of on-board water in the tank the water is back flushing into the on-board tank system and overflowing the tank at the fill point. Is this an indicator of where my problem might be, possibly a check valve?
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Old 01-09-2019, 09:01 PM   #13
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This is a new symptom as this is our first night on shore water. My apology as I am using my phone instead of a computer.
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Old 01-09-2019, 09:13 PM   #14
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This is definitely an indication that the check valve in the water pump is not working. It is most likely the reason the pump is cycling. It might be time for a new pump.
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