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Old 06-02-2016, 12:51 PM   #1
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Water pump relation to battery voltage

I'm making this separate for those who don't want to read my whole water pump cycling issue thread.


I would not think so....but I'm grasping at straws here....

Could a lower battery voltage after some battery use be contributing to this pump cycling?

It seems that once I plug in my solar charger and the voltage comes up the problem lessens greatly.

Problem is water pump cycles for 1/2 second every 5-10 minutes.
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Old 06-02-2016, 01:33 PM   #2
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One of two things could be happening.
1 You may have a very small leak and are losing pressure somewhere.
2 The seals in the water pump are worn and it is losing pressure.
3 IMO a battery with low voltage would have nothing to do with your pump cycling.
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Old 06-02-2016, 01:42 PM   #3
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... or with the higher voltage does the pump run a bit faster and so the pressure goes quickly to a higher pressure... which then takes longer for the 'leak' (wherever it is) drop the pressure down to where the pump kicks on again?
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Old 06-02-2016, 02:10 PM   #4
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Hey guys,


Thank you for the replies. oldmanAZ none of that happens which I could see being part of the symptoms if it was the voltage.


Pump works normally all around except for the cycling. It is most likely a small leak although it's been to the dealer 3 times and they say no leak. Water pump is new.


THe toilet holes inside rim seems to be "weeping" a bit of water into the bowl...


The cycling is much more frequent in when it's cold or cool outside. Was ever 5 mins this morning. Now I'd say every 10-15.


Very strange.
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Old 06-02-2016, 02:59 PM   #5
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Do you ever hook up to shore power for any extended period of time? If so, how does the pump react?

Personally, I doubt it has anything to do with the power. Every pump cycling issue I have encountered involves some type of leak. I would first start by looking for water around every joint you can reach, including faucet connections. Wrap a little TP around any joints that you question. When TP gets wet and dries, it will have a unique wrinkly look. Look closely at the low point drain valves, you may have a little construction debris in the O-Rings, or they might have gotten nicked. One of mine started a slow drip, added a little plumbers grease to the O-Ring and it stopped immediately. Also check your filter screen right before the pump. Mine was full of mirco fractures (looked like scratches), and caused a lot pump cycling, and was getting worse every trip. At camp one weekend it really started to cycle alot (no water leak), I wrapped electrical tape around the screen bowl, and most of the cycling stopped (warranty repair).
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