Water problems (Again)

Discussion in 'Motorhome Chat' started by oozzie, Aug 22, 2016.

  1. oozzie

    oozzie Funster

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    Hi, Having problems with Hymer 544 (2004) water pump. Had trouble with the water emptying back into the tank previously, so bought a new Reich twin pump with NRV and also fitted a non return valve directly into the water pipe.

    The water comes through the taps with good pressure most of the time, Then maybe next morning nothing so i have to go through bleeding the system again which seems to take ages.

    Can anybody think of whats going wrong?

    Thanks.
    Oozzie
     
  2. s20hymer

    s20hymer Funster

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    hya you must have a small leak in pipe or joint thats draining down over night
     
  3. oozzie

    oozzie Funster

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    That would have to be a large leak I think. I have to go through whole process of filling/bleeding the system so over 10 litres to fill boiler and pipes. On checking, I don't seem to be losing any level out of the tank.

    Oozzie
     
  4. s20hymer

    s20hymer Funster

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    hya .. you have two new NRV so the water must be getting out of the system ..are the NRV in the tank ? i know one is on top of pump also to check is the boiler dump Vv isnt letting water out if you switch 12v at night??
     
  5. oozzie

    oozzie Funster

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    I fitted the extra NRV on top of the tank before buying the new pump, then bought the new pump so only the NRV on the pump in the tank. Away in the van again this weekend so will do some more investigating!

    Thanks..

    Oozzie
     
  6. Badknee

    Badknee Funster

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    You must have a pressure drop after both the nrv's. If you leave the pump switched on overnight do you ever hear it run?
    I had a slight leak after the water heater that brought the pump in during the night but it was a bugger to find.
     
  7. oozzie

    oozzie Funster

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    Hi @Badknee. The pump is always switched on, but never hear it running. Think I'll start having a look tomorrow and see if I can find any leaks.

    Oozzie
     
  8. Wildbill

    Wildbill Funster

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  9. Badknee

    Badknee Funster

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    Ok, so where is the pressure switch I wonder? We have in line tank- filter-pump-pressure switch-cold taps/water heater-hot taps.
    My leak was just after the water heater so the pressure switch picked up the drop in pressure and fired the pump up. I wonder where yours is that doesn't bring the pump on?
     
  10. Theonlysue

    Theonlysue Funster Life Member

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    I thought the pump was a non return valve type, maybe you gave the wrong pump.
    In my hymer pump operated when tap switched on by microswitch.
     
  11. DavidG58

    DavidG58 Funster

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    it seems odd that you lose the contents of the boiler as well, or have I misread that, or is possibly that is all you are losing, but when you try to draw water it goes back to there first?

    Best of luck I really hate odd faults like this, give me some thing properly broken every time. (y)
     
  12. s20hymer

    s20hymer Funster

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    hya i am sure that model hymer has micro switches on each tap so the pump only comes on when a tap is opened hence the thought must be a leak somewhere ....happy hunting
     
  13. s20hymer

    s20hymer Funster

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    hya just had a thought after reading Davids post there is a none return Vv on side of boiler that will dump outside look under van when tap is on see if any water is coming out
     
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