Trauma Gas/Electric Heater

Discussion in 'Motorhome Chat' started by donnkim, Nov 25, 2014.

  1. donnkim

    donnkim Funster

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    Before I contact the dealer I just need to make sure I have a problem.
    Is the thermostat used on these systems not sensitive enough. I can turn the heating on high, eventually it will turn off when it has reached a high internal temperature, or I have to turn the setting down. However, when the internal temperature drops, it is not switching back on.
    Is this a problem common on these, or do I just have to put up?
    Don
     
  2. tonyidle

    tonyidle Funster

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    The thermostat is pretty sensitive and works well. It can only do so, however, if it's mounted somewhere sensible. If it is somewhere that stays warm when the rest of the van cools down it obviously won't switch the heating back on. Where's yours?
     
  3. donnkim

    donnkim Funster

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    It's above the kitchen area but doesn't seem to work when the whole van gets cold.
    We have only just purchased this 2007 HYMER 654 AND VERY HAPPY WITH EVERYTHING OTHER THAN THE HEATING SYSTEM.
    We will bear with it another few days - see if we can sort it out.
     
  4. Hymie835

    Hymie835 Read Only Funster

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    When the heating comes on in a cold van the fan should step up to speed two and when it gets within a few degrees of chosen heat should drop down to speed one before finally cutting out when optimum heat achieved. Are these steps happening?
    If the sensor is above kitchen area it sounds as though it is not getting a good flow of air around it.
     
  5. gozomike

    gozomike Funster Life Member Life Member

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    I am noticing what appears to be a lag in the heater coming back on with the van cooling down but the temp gauges I have do not show much change. I think it is the temp at floor level dropping quicker than at body height so feet can cool quickly. Sitting with feet up the difference is not so noticeable. I think it would be worth checking the temp at various heights to see if you are getting this type of problem.
     
  6. Hymie835

    Hymie835 Read Only Funster

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    We used to get the cold feet syndrome, put it down to the fact that our Hymer did not have the double floor.
     
  7. gozomike

    gozomike Funster Life Member Life Member

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    That could be my problem but I am measuring 3 to 4 deg lower temp at the floor to higher up.

    Must pack more thick socks & thick slippers. :LOL:
     
  8. gozomike

    gozomike Funster Life Member Life Member

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    Is that the control or the sensor? Near the kitchen, if that is in use, does not sound good for the sensor. I wonder which controller you have, mine is the digital one with a timer and I am sure there is to much difference between switching off & back on.
     
  9. Jaws

    Jaws Funster Life Member

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    Interesting point that.. They always put the sensors up high too.
    Now you have got me thinking !!
    Not sure where mine is but I have a feeling that it might well be on the move to a more southern area in the van if at all possible ! (y)
     
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  10. Daedalus

    Daedalus Funster

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    That must be the Truma thermostat control you're talking about - the 'sensor' for the heating in most Hymer vehicles is usually under either the driver's seat or the passenger seat - if it has become disconnected then you have no signal back to the thermostat control.
     
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  11. Jaws

    Jaws Funster Life Member

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    Soo.. anyone have a Chieftain knows where the bloody sensor is then ?
    Buggered if I can find i
     
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  12. Larrynwin

    Larrynwin Funster

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    Sounds like the Truma heating has its problems or is it a case of turn up the 'stat ?
     
  13. Jaws

    Jaws Funster Life Member

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    Found out the sodding thing does not have a remote sensor just the main one above the door. ( no wonder I could not find it ! )
    The sensor with a but of wire is about £40 including postage.. I will live without !
     
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  14. Steveboy

    Steveboy Funster

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    I recently and accidentally bust my Truma 6002 central heating switch on my Rapido 972m. Sent off for new and boy has that made a difference to the sensitivity of the heating. it slips up and down the different fan speeds more promptly now and holds the van temperature far better than it used too. Hav'nt a clue where my van thermostat is but changing the switch has made a big difference.
     
  15. tonyidle

    tonyidle Funster

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    Mine
    Mine (on a Hymer B584) is above the entrance door. It's a small round black plastic 'button' around 20mm in diameter. The heating controls are on the side of the wardrobe.
     
  16. Alonsos

    Alonsos Funster

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    My truma ultrheat stat does not hold a constant temp , sometimes it takes temp to 26 c others times it blows cold on 20c ( heater knob on the actual heater set on 2)
    I wonder if stat senses temp through wardrobe wall re heating pipe runs up inside drobe
     
  17. jenny and mitch

    jenny and mitch Funster

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    We always put the blown air circulation fan on the top of the fire on" manual", that way I can control the warmth by adjusting the thermostat above the hab door, which is in the kitchen.
    Haven't tried putting the fan on "Auto" yet..
    But to be honest we have rarely been on hook-up, as we are free loading tossers !! :rolleyes:
    Mitch..
     
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  18. Lenny HB

    Lenny HB Funster

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    Never seen one there all the Hymers I've seen or had it is above the door next to the control panel.
     
  19. ultima

    ultima Funster

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    I have a Propex 2000 and find it takes ages for the stat to turn off and then a long time to start up again.My stat is at "eye level" as recomended,considered lowering it though.
     
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  20. Alonsos

    Alonsos Funster

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    I momentarily thought about lowering the stat , mine is eye level too
    It makes sense nothing to lose
    Pity there's not an adjustment inside the stat a little screwed pot or the like
    But may just give that lowering a bit of thought ta !!!
     
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