interior gas smell

Discussion in 'Motorhome Chat' started by mentaliss, May 22, 2016.

  1. mentaliss

    mentaliss

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    after a lot of 'sniffing' ,switching over to electric etc, etc I'm pretty sure now that the dreaded smell appears to be coming from the fridge area, no lights flickering, no real signs that there's a problem, no experience with this type of problem.....so any pointers to look for??
     
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  2. Mikey RV

    Mikey RV Funster

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    Just check all connections, not with a match:eek: make sure the motorhome is well ventilated. Is the smell a gas smell or amonia as when fridges leak you will get a amonia smell. If in doubt get it checked by someone qualified.
     
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  3. Don Quixote

    Don Quixote Funster

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    Smell gas............................... GET IT CHECKED NOW
     
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  4. dave newell lvs

    dave newell lvs Trader-Vehicle Services

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    Is it a leaking gas smell or is it coming from the flue? Is there any sign of soot or discoloration around the flue outlet/top vent? If so then it is most likely that your burner is dirty and the flue is sooted up, basically the fridge needs servicing.

    D.
     
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  5. JeanLuc

    JeanLuc Funster

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    What type/age fridge do you have? I have a manual energy selection Electrolux/Dometic RM6401 (fitted in 2003) which has a thermostat control knob on the top right. This is also the ignition activator for the gas burner. Over the years I have sometimes noticed a gas smell from this knob. It has been pressure tested (twice) and inspected thoroughly by a Dometic-accredited engineer and there is no problem evident. The engineer told me that this has been known about for some time but until recently he did not have any answers to it. On his last visit, we were discussing the issue and he asked me if it was noticeable all the time or only when the supply LPG cylinder was getting low? 'Bingo' that is the case - it is only noticeable in the day or so before I switch to a new cylinder or refill (Gaslow).
    Perhaps this is the case with yours?
     
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  6. Welsh girl

    Welsh girl Funster Life Member

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    We also notice a gas smell when one bottle is running low.
     
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  7. Dazzlin

    Dazzlin Funster Life Member

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    Glad it's not only me! 2007 dometic AES 6 series fridge.

    Only when v low, ie last day, and only on gaslow. Just top up before it's that low now.

    On 13kg maroc butane bottle no smell when low!
     
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  8. mentaliss

    mentaliss

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    Further examination shows no sign of gas actually leaking, Fumes then, but this is a Dethleffs Advantage and there no way to get to the chimney without pulling the hole fridge /freezer out to gain access to the bits and pieces,
    just a thought, has anyone used a 12volt computer type Fan wired up within the the heat chamber to help draw up the hot air?
     
  9. sdc77

    sdc77 Funster

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    Lots of threads on fridge fans and some instructions/ideas with pics.. just do a search
     
  10. DanielFord

    DanielFord Funster

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    We have a cooling fan fitted to the back of our fridge, but it only kicks in when the temp gets too high. It was a standard Thetford accessory, and easy to fit.
     
  11. Lenny HB

    Lenny HB Funster

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    Get yourself a gas sniffer like this, I always carry one in the van well worth a few quid for piece of mind.
    Had a caravan started to smell gas occasionally from the fridge, a pin hole caused by rust in the pipe from burner to control they are steel, replaced it with copper.
     
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  12. Rapido925M

    Rapido925M Funster

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    VERY INTERESTING! We have had the odd smell of gas from the fridge over several years BUT I can't vouch for the level of the cylinder.

    Like JL, it has been tested by Dometic-accredited engineers (3 in total!) who have all declared it "safe".

    The most recent incident saw us heading for a CC site to use electric, rather than a Britstop, so I was about to bite the bullet and get a new 3-way control valve fitted (approx £130+labour+VAT) because the money spent could be recouped by site savings. [It was the only thing I could think of, as everything else has checked out OK :( ]

    Now I need to get out and see if it is smelling, because the tank was almost empty when the smell appeared but it is now full.

    Would anyone like to suggest a reason for this link in tank contents and smell? Does the regulator fail to maintain pressure when the tank is low? Does reduced pressure result in partial combustion, with the unburnt gas getting back into the van?

    Gordon
     
  13. mitzimad

    mitzimad Funster

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    only thing i can think of is if pressure is low it may not push the o rings to seal properly but i cant see it when were talking millibars to start with
     
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  14. The Dude

    The Dude Funster

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    Us too. Scared the hell out of me when I first noticed it - in fact I actually ran out of the van fully expecting it to blow sky high.
     
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  15. laurieash

    laurieash Funster

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    Very common in my static caravan when the bottle is about to run out can smell it on the hob.
     
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  16. jockaneezer

    jockaneezer Funster

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    The smell added to natural gas (ethyl mercaptan) can adhere to the steel walls of your gas bottle, perhaps as the level of the tank reduces, the concentration of e.m. carried over by the gas might increase, leading to a more noticeable smell ?
     
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  17. Rapido925M

    Rapido925M Funster

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    GOAL! Just been out to check with a full gas tank and there is no smell. This little thread could possibly have saved me the best part of £250 - perhaps I should buy a life subscription?

    Thanks to all (y)(y)(y) - Gordon
     
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  18. The Dude

    The Dude Funster

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    YAY!!!!! Sorted. :Grin:
     
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  19. TerryL

    TerryL Funster Life Member

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    Good news, thanks for letting us know. But anyway the thread has prompted me to get one of those gas sniffers; been meaning to for a while after I had a similar problem at Stratford Show but Ash sorted me out then.
     
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  20. mentaliss

    mentaliss

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    Thanks, leakage tests that I have carried out shows no signs of gas so I believe its a build up of soot within the flue and as you say may need servicing but what does this entail, do dealers really do a proper job? I say this as its virtually impossible to get to the flue stack whilst the Fridge/Freezer is in its fitted position and from further inspection it seems that the fridge,freezer may have been removed sometime before we purchased the MH ..(there's DIY Sealing tape applied within the top vent 'exhaust chamber') but you can see daylight inside the van between the 'supposed' to be sealed fridge walls to the interior panels so any fumes that don't extracticate via the vent appear to get into the interior of the vehicle..so it looks to me that the whole Fridge/Freezer tower has to come out for this work to be carried out ...this problem must be quite serious when you consider that this vehicle (Dethleffs Advantage 2007) is also fitted with atmosphere roof chimney vent which doesn't alleviate the fume smell ??
     
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