No water pumping....

Discussion in 'Tech/Mech General' started by oaktree11, Apr 4, 2016.

  1. oaktree11

    oaktree11 Funster

    Joined:
    Aug 15, 2015
    Messages:
    51
    Likes Received:
    26
    Location:
    Cheddar, Somerset
    Hello all, I have a very strange problem with my Burstner Aviano. We lived in it for a month between houses and then we parked it up for a month.
    When I parked it I drained the water out and at that stage all was fine.
    this weekend we went away and when we arrived I filled the water tank turned on the 12v and the pump switch and....nothing! no pumping on either tap or the toilet flush. I can hear the microswitch clicking on each but no action. The pump does not start at all when a tap is turned on.
    OK, I have checked the pump fuse and its ok. The 12v works, all lights etc ok. I have put a 12v supply on the pump in the water tank and it spins up fine. I have removed the control panel and the pump switch has 12v going to it.
    I am now officially stumped. Anyone got any ideas? I have the feeling that I must be missing something because it was perfect when I parked it and nothing has happened in between (except possibly rodents? but I think that is unlikely?)
    Failing everything else, does anyone have any recommendations for who might be able to fix it in the Cheddar, Somerset area?
    Thanks in advance for the help
    John
     
  2. Jaws

    Jaws Funster Life Member

    Joined:
    Sep 26, 2008
    Messages:
    18,356
    Likes Received:
    21,738
    Location:
    Narrfoook
    Check the control panel .. If it is like the Autotrail and some of the older Burstners there is the ability to switch from internal to external pump..
     
  3. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    29,484
    Likes Received:
    16,967
    Location:
    YO11 2BD
    Possible mickey damage.
    The little buggers get everywhere and just love the taste of pvc wiring.

    Turn on a tap and check voltage AT the pump.
     
  4. rangitira

    rangitira Funster

    Joined:
    Jun 30, 2010
    Messages:
    6,267
    Likes Received:
    12,446
    Location:
    Cornwall
    This fella is in Street (Somerset?) Don't know if he is close enough for you

    SRB Caravan and Motorhome services 07540065649

    Simon Baker, used him when the joker here in Cornwall made one hell of a mess of our Pump, (water pipe bent at such an angle the water couldn't get through)
     
  5. oaktree11

    oaktree11 Funster

    Joined:
    Aug 15, 2015
    Messages:
    51
    Likes Received:
    26
    Location:
    Cheddar, Somerset
    Thanks for the replies so far guys
    Much appreciated
     
  6. Armytwowheels

    Armytwowheels Funster Life Member

    Joined:
    Aug 10, 2012
    Messages:
    4,026
    Likes Received:
    6,405
    Location:
    Market Harborough
    You have Somerset Motorhomes not that far from you if that's any help?
    image.png
     
  7. oaktree11

    oaktree11 Funster

    Joined:
    Aug 15, 2015
    Messages:
    51
    Likes Received:
    26
    Location:
    Cheddar, Somerset
    Just so I am clear when I get the energy to take another look at this! Can I assume that the wiring of this system is fairly simple?
    I am thinking the two taps and the toilet flush switch are in parallel so that any of them switch the pump?
    If that's the case the logical thing is for the wiring to come from the pump switch on the master panel to the kitchen tap (closest) then into the bathroom for the shower and flush.
    I will check to see if there is 12v across the pump when a tap is opened but I doubt it so the likelihood is a lack of continuity from the panel to the pump.
    Does this sound reasonable?
    John
     
  8. Mattyjwr

    Mattyjwr Funster Life Member

    Joined:
    Aug 18, 2013
    Messages:
    1,825
    Likes Received:
    3,135
    Location:
    Beds
    Just a thought but would an air lock cause these symptoms - I know that you would normally hear the pump trying to work but maybe not always. Perhaps you could try sucking water through a tap and see if that gets the pump going.
     
  9. SC 05 OUT

    SC 05 OUT Funster

    Joined:
    Apr 4, 2009
    Messages:
    3,274
    Likes Received:
    6,464
    Location:
    doncaster
    Just thinking "outside the box" and keeping it simple,

    your pump worked when you added power from a seperate sorce?

    it did not work when you switched "on" any tap

    so is your power "on"?

    is it the same on mains and 12volt?

    is the "other" 12volt services working?
     
  10. gillnphil

    gillnphil Funster

    Joined:
    Apr 12, 2010
    Messages:
    897
    Likes Received:
    3,406
    Location:
    West Suffolk
    On a Hymer I once had, there was an outside Master switch located in the outside utilities locker. Some times this used to get switched off by accident. Worth a try.
    Phil
     
  11. mitzimad

    mitzimad Funster

    Joined:
    Jan 28, 2008
    Messages:
    2,974
    Likes Received:
    3,328
    Location:
    walthamstow east london
    is there a relay to switch the pump when the micro switches make the circuit?i would test for 12v at the switches if yes then search for a relay. if there is a relay there maybe two fuses one on trigger side and one on power side i know nothing about your system just throwing ideas into the mix
     
  12. oaktree11

    oaktree11 Funster

    Joined:
    Aug 15, 2015
    Messages:
    51
    Likes Received:
    26
    Location:
    Cheddar, Somerset
    Thanks again to all. All suggestions valued and certainly help me get my thoughts in order, that's the value of this forum.
    John
     
  13. oaktree11

    oaktree11 Funster

    Joined:
    Aug 15, 2015
    Messages:
    51
    Likes Received:
    26
    Location:
    Cheddar, Somerset
    Just a final post now that the problem is sorted.
    After much messing around, it was finally traced to a bad connection in a plug on the control panel circuit board. Desperation and just unplugging and reconnecting plugs found it. What a nightmare!
    It just goes to show though these odd, one off, simple faults can be hell on earth to trace.
    Thanks again to all who helped
    John
     
    • Like Like x 1
Loading...
Similar Threads
  1. Chas17
    Replies:
    10
    Views:
    334
  2. David27
    Replies:
    6
    Views:
    167
  3. Glyn Dunn
    Replies:
    7
    Views:
    306
  4. Steve
    Replies:
    8
    Views:
    269
  5. Shirley
    Replies:
    20
    Views:
    958

Share This Page