20 year old hymer fire problem

Discussion in 'Heating and Air-Conditioning' started by nunny666, Dec 1, 2014.

  1. nunny666

    nunny666

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    hi all ,went away in our hymer a few week ago ,only ever used the fire on 2 as its been warm enough ,though was bit colder so turned up to 4,now this was fine for some time but all of a sudden we got a bit of an explosion and the cowl blew off ,i can only think that the fire needs a service , and that it was ok on setting 2 as it was burning all the gas that passed through but by turning to 4 setting it didnt burn all the extra gas ,and sent it up the flue with the burnt gas ,and lpg being heavier than air i reckon it fell back to the burner and ignited the excess gas,i think the burner needs a good clean ,i am gas safe registered with lpg ,but after some advice ,the burner looks to come out from underneath the hymer is this correct ?and if so how does it come out ,any help appreciated , and any further advice on why it accured or your views on my thoughts appreciated,the gas bottle was also near empty when this happened but that shouldnt of affected it in this way
     
  2. JJ

    JJ Funster

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    Which Hymer is it?

    Which heater?

    Do you have a "double" Truma/Carver heater... (photo?)

    If it is a double section heater could it be only one of the burners ignited properly and the second let a bit of gas through which didn't ignite at first.

    I was told by Truma I could access the burners from underneath my Hymer 660 but found it easier to take the whole thing out from "upstairs".

    I'll see if I can dig up the photos...

    JJ :cool:
     
  3. Wildman

    Wildman Read Only Funster

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    it sounds to me like the wind blew the flame out and there was a lag in the thermocouple allowing gas the come through and reignite. But then you are the gas engineer, if it is the same as mine a carver heater the burner does drop out under the floor.
    or as JJ said.
     
  4. nunny666

    nunny666

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    Cheers guys photos on way it's a hymer b534 on fiat
     
  5. nunny666

    nunny666

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  6. nunny666

    nunny666

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  7. nunny666

    nunny666

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  8. nunny666

    nunny666

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  9. JJ

    JJ Funster

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    You have done most of the work already!

    Careful easing the flexible pipe off (mine had an orange coloured O ring making the gas seal).

    A few screws holding the heater to the floor...

    Lift it up and there is the burner etc...

    JJ :cool:
     
  10. nunny666

    nunny666

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    Cheers jj
     
  11. nunny666

    nunny666

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    Really appreciated
     
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