water pump kicks on every now and then

Discussion in 'Miscellaneous Repairs & Maintenance' started by ham fam, Sep 23, 2019.

  1. ham fam

    ham fam Member

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    My 12 volt water pump, keeps kicking on just for a second every now and then. lt is only used to draw water from the holding tank. Anybody ever have a similar issue? And a solution?
     
  2. BikeNFish

    BikeNFish Well-Known Member

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    Last night, I drained the tank, then turned on the faucet to remove the water in the lines. Once the water was removed from the lines, the pump ran until I turned off the power to the pump. So, I'm guessing that you may either have a small leak or another reason why you are getting air in your water lines.
     
  3. Sjm9911

    Sjm9911 Well-Known Member

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    Theres a diapram between the pump and tank. Sometimes it gets stuck a bit.
     
  4. Bradley E Dixon

    Bradley E Dixon New Member

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    Mine did the same thing on our first "maiden" voyage camping.

    I found that the "low-point" cold water drain T-VALVE under the sink was not seated correctly and was leaking onto the ground under the camper. Thus the 12v pump would run when the pre-set pressure would drop.
    The tiny C-clip had popped out and was laying on the floor next to it (whew). Seated the valve - Re-inserted the clip - no issues since.

    ( pic is the actual valve - but it stands up with the "T" at the highest point and the barbed end directly opposite goes thru the floor w/ a small hose attached)

    My 2cents...
     

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  5. Snow

    Snow Well-Known Member

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    Yup.. the water pump on our TT does the same.. the pump is sensing a pressure drop to it runs to rebuild the pressure.. 2 of the common things that leak are the check valve on the city water connection (usually leaks if some has cheated while winterizing and left the pump turned on, when they pressed the "pin" to open the check valve.. the seal gets rolled over) or the over pressure valve on the water heater... less common but will cause the same issue are, dripping faucet, one of the swaged fittings on a line is not tight allowing air "in", water heater anode/plug leaking or if your trailer has low point drains, one of them leaking.... In my case it is the drain plug on the water heater drips a little bit..
     
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  6. mpking

    mpking Well-Known Member

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    Ditto on the leaking water heater anode for me. Had to reseat it to stop it.
     
  7. Econ

    Econ Active Member

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    And if you boondock it is using battery juice to be in standby.
     
  8. mpking

    mpking Well-Known Member

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    That is not be true.

    The pressure switch is more like a second on/off switch. When pressure is above the threshold, the switch is off, no current is drawn. When it drops below the threshold, the switch turns on, and the pump draws power.
     
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  9. joet

    joet Well-Known Member

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    Internal check valve in pump leaking? Which is common
     
  10. kitphantom

    kitphantom Well-Known Member

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    We only turn the pump on when we plan to be using it, though we do forget to turn it off once in a while. With the original pump in the TT, it would kick on relatively often if left in standby state, we never found a leak. We upgraded to a better pump, which is less noisy, and takes much longer before it gives a quick trill if we forget to turn the pump off.
     

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