Here's a puzzle - "wrong sort of gas"

Discussion in 'Motorhome Chat' started by chuns, Jan 27, 2016.

  1. chuns

    chuns Read Only Funster

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    Hello, all, I wonder if anybody has a view on this...

    Here are the symptoms. The cooker, fridge, and freezer all work fine, but the Combi6 shuts down, claiming there is a "pressure issue". I use LPG, bought in garages.

    I only discovered this problem recently as up until then the only use was in summer, though I can remember, I think, using the heater on a chilly morning. The van is barely 6 months old, and the last fill I did was in France.

    My local Moho specialists (Autovan Services, great to deal with) undertook some rigorous diagnostics and having got the heater to run satisfactorily with another bottle of gas, concluded that the problem most likely lay with the gas, with a remote chance it might be the bottle.

    The curiosity is that everything else works, just the warm air heater (not the hot water heater) gets precious about its supply.

    Has anybody ever met this issue before? I'd be grateful for any thoughts.

    Regards

    Peter
     
  2. DavidG58

    DavidG58 Funster

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    Could it be that if the heater is used on td own, as the test might have done, it has more pressure or enough pressure, but when away you will then have other things running reducing the available pressure?

    Just a thought

    I don't think it is the wrong sort of gas :)
     
  3. John Laidler

    John Laidler Funster

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    If it works fine on another bottle then it is possible you have a bottle of butane, or mostly butane. This won't work well at low temperatures and if you use a lot of it quickly the bottle will get even colder and a frost will form around the bottom of the bottle. The fridge will need so little gas this may not chill the bottle.

    I can only suggest trying the heater and when it stops check the bottle for frost.

    If it is butane just keep it for the summer.
     
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  4. Lenny HB

    Lenny HB Funster

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    Combi are known for playing up on butane, they require a high flow rate, which butane can't always deliver, even when it is fairly warm they can fail.
    What country did you last fill up on gas in, UK is 100% propane, other countries propane/butane mix, amount of butane varies with season, more in summer, I think Spain is 80% butane all year. Also the propane will gas off first leaving you with a cylinder of butane.
     
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  5. DavidG58

    DavidG58 Funster

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    I stand (sit) corrected, didn't realise that refilling in Spain could be such an issue when returning to the UK in cold weather

    I am a wiser person again, thanks (y), now just got to try to remember :)
     
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  6. Yorick

    Yorick Funster

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    My heater won't work on Butane, but works fine on Propane :)
     
  7. chuns

    chuns Read Only Funster

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    An update for all who were kind enough to offer their thought.

    Managed to get rid of all the gas, and filled up with UK LPG. The heater now works fine.

    Well, well.
     
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  8. Sas r us

    Sas r us Funster

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    Another solved...(y)
    Good here aren't they....
     
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