carbon monoxide

Discussion in 'Motorhome Chat' started by gpz, Apr 27, 2014.

  1. gpz

    gpz Funster

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    does any one know if a fault with the leisure battery can cause fumes that will set off a carbon monoxide alarm ,basically carbon monoxide alarm keeps going off tried turning off one appliance at a time and i thought it was the fridge but all appliances are turned off and the c/m alarm is still going off i tried putting the alarm in with the leisure battery and it went up to 260 ppm in a short time anybody got any thoughts on this ,there is a steca charge unit for the solar panel that has eol fault code which is leisure battery voltage low but i cant seem to reset the unit anybody got a steca 1010 gharge unit for there solar panel thanks in advance
     
  2. simbadog

    simbadog Funster

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    I think that Electrochemical carbon monoxide sensors are cross sensitive to hydrogen so that may be the cause. Could be the regulator is playing up?
     
  3. gpz

    gpz Funster

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    i did wonder whether the regulator was playing up as we tried to get rid off the e07 error code and could not do it its just a bit worrying when the cm alarm keeps going off maybe some off the electrical guys could give an opinion as dont know whether its safe to use it or not must admit the cm alarm doesnt seem to go off when theres no sun so you could be right thanks for your help
     
  4. JeanLuc

    JeanLuc Funster

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    Yes, they can be sensitive to the gases given off by a charging battery (hydrogen and / or hydrogen sulphide for instance). That is how i discovered that one of my original gel habitation batteries had failed a few years ago. One of the reasons why it is a good idea to vent any internally fitted battery, whether or not it is a sealed type.
     
  5. Wickolad

    Wickolad Funster

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    I would be tempted to try your CM alarm unit in another van for 30 minutes or so to see if the activations stop. Vise versa, borrow a fellow campers to test if the problem does lay in your van. It then confirms whether your alarm is at fault or not and/or if you indeed have a problem in your van.
    With regards to the battery gasses, I would have thought you would smell the usual acrid acidic smell if your battery was over gassing, but I always thought occurred when higher charge voltage was the problem yet you say the charge unit indicates low battery volts (Possibly a cell or 2 failed in your battery). It may be worth checking the temperature (does it feel hot) and the voltage at the battery terminals with a tester for a definite reading, then pull the fuse to disconnect the Stecca charge unit, leave a few moments for surface charge to subside, then test the battery voltage again, by doing that you will have an idea of both the battery and the Stecca charging volts.
    The usual thing is to work through a process of elimination, however, I have just notice the post above and tend to agree, this could be down to a failing battery. That would explain low voltage fault and overgassing. I wasn't aware the CM alarm could detect battery gasses, but that would explain the activations and is surely benefitial to us all.
     
    Last edited: Apr 27, 2014
  6. chaser

    chaser Funster

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    Can anyone tell me how these work, I have one from new off eBay but don't know if it's working or not it hasa digital display that always says 0 but if you press the check button it screeches and says 81 on the display, but other than that never seen any different number or anything on it, would it always be 0 even when cooking and gas heater on, it has a led that lights up every so often.
    This is the one
    http://www.ebay.co.uk/itm/LCD-CO2-C...31218?pt=UK_Safety_Alarms&hash=item1c3997c212
     
    Last edited: Apr 27, 2014
  7. gpz

    gpz Funster

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    cm alarm

    thanks for your reply Wickload i have tried another cm alarm which has been in another van and it too is showing high readings so i have more or less ruled out the alarm i must admit i thought i could smell something when i opened the van door yesterday but i have not got a real good sense of smell i will try the battery voltage but i could not find anywhere to isolate the solar panel regulator there is a small fuse box but turning it off does not seem to turn off the steca unit display is still visible so not sure there so i will have to borrow a meter to see if the battery is low on power or is it the steca that has failed its funny loking at the post icons the steca unit has a grumpy face like this one so i know something is not right:
     
  8. simbadog

    simbadog Funster

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    Last edited: Apr 27, 2014
  9. Wickolad

    Wickolad Funster

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    Hi, don't know if you have the manual handy or not, but just found this. There is a section that covers a sequence for the Stecca to perform a self test and the numerous fault codes and operation

    http://www.batterystuff.com/manuals/manual-PR1010.pdf


    Hope you get sorted, Lance
     
    Last edited: Apr 27, 2014
  10. gpz

    gpz Funster

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    cm alarm

    thats the one Wickload. i have the manual Simbadog pointed me in the right direction but i cant seem to reset the fault code so im assuming that the steca unit is faulty
     
  11. Wickolad

    Wickolad Funster

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    That I would think would be dependent on whether the fault was still there or had been removed. If the battery is at fault and still connected to the Steca charge control unit, the unit will still see the fault and not reset. Probably the easiest way is to connect a battery known to be good, just swop with yours for a few minutes. Then try reset and then this will indicate battery or charger. Hope this helps, I know its messing around with heavy batteries but better that than an expensive mistake.
    Lance
     
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  12. gpz

    gpz Funster

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    cm

    by the way how do i tell if the battery is shot ounce i get a multimeter is it just a case off the voltage being below 12v can any body elaborate as electric is a black art to me thanks in advance
     
  13. JeanLuc

    JeanLuc Funster

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    If one of more cells in the battery have failed, it is likely to be noticeably warm when charging. If a failed cell is likely, I would leave the door open whilst charging to check it and ensure there are no sources of sparks nearby.
     
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  14. TheBig1

    TheBig1 Funster Life Member

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    if the battery reads low even after charge, that is a first indication of a failed battery. the production of hydrogen sulphide caused by trying to charge a bad battery which will set off a carbon monoxide alarm will prove it

    dont forget hydrogen sulphide is an explosive gas, so be very careful disconnecting and changing the battery. if in doubt have it done by a professional for your own safety and to protect your van. not being condescending by the way, but as you needed to ask it indicates a lack of knowledge of how batteries work:thumb:
     
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  15. Tmesis

    Tmesis Read Only Funster

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    I might be missing the plot here, but the diagnostic seems simple. Take the unit into the open air and see if it alarms. If it doesn't then it is not faulty. Put it back into the van and if it alarms then you have gas in the van. Then shove it in the battery compartment and see if it goes berserk.
     
  16. gpz

    gpz Funster

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    cm alarm

    yes ive already done that and it did go beserk but does that tell us iff the battery is itself faulty or is the charger unit over charging and making the battery faulty
     
  17. Tmesis

    Tmesis Read Only Funster

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    Either the battery has a duff cell or the charger is overcharging the battery. You could check that your charger is set to the correct battery technology (agm/gell/wet). or maybe you have a standard non-sealed lead acid battery that has not been externally vented.

    Also, does the co alarm go off when driving after the battery has been used? If the battery doesn't gas when being charged by the alternator I'd rule out the battery being bad.
     
  18. Inthezone

    Inthezone Read Only Funster

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    CO alarm

    Do I understand this post is about the CO alam goes off and the leasure battery is suspected of being the cause?, if so shouldnt leasure batteries have a small vent tube on them which should be vented outside the vehicle, I must admit I havnt looked recently as the last one I purchased was for the caravan we used to have and that had a plastic tube that I had to feed through the floor to open air.

    Just a thought
     
  19. JeanLuc

    JeanLuc Funster

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    Yes - see my first post above. Always a good idea to vent any internal battery if possible.
     
  20. Keef

    Keef Funster

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    Alarm

    I had the same problem and discovered it was the leisure battery failing while on charge and giving off gas that was odourless. :thumb:
     
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