Main Medway Super Water Heater

Discussion in 'Plumbing and Central Heating' started by potplant, 8 Dec 2008.

  1. potplant

    potplant

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    Hi I'm new here so go easy
    My daughter has just bought her first house with (you guessed it)
    Main Medway Super Water Heater

    Iv'e down loaded the MI the system looks fairly simple
    I can light the pilot easily & it will stay lit but when I open the hot taps the boiler won't fire up so what is wrong

    Could it be the thermo couple, our the diaphragm.

    If it is the diaphragm can I part remove the water governer assy & duplicate the push rod movement by hand to get the boiler to fire up by

    Any help would be greatly appreciated
     
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  3. ChrisR

    ChrisR

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    Yes you could. You'd need a new water heater if you did that though. If you don't see why, perhaps you'd be better to call someone in. ;)
     
  4. gas4you

    gas4you

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    Could be the push rod slightly bent.

    The best option, but the most expensive, is to replace the water section.

    This would, however, need some of the gas joints disturbing, so an RGI with a water heater ticket would be required.
     
  5. potplant

    potplant

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    Hi sorted that heater
    ChrisR sort of got my back up ;)
    So I went down and ripped the necessary items to bits did what was needed to repair it, actually started the boiler by hand for couple of seconds
    If you want to know what it entailed then, perhaps you'd be better to call someone in.
    But not the guy of the TV last week that shafted the customer for £400+ ;)
     
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  7. HarrogateGas

    HarrogateGas

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    Lets hope your daughter has a nice first house to come back to next time she goes out..............
     
  8. mickyg

    mickyg

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    Make sure her house insurance covers fire damage........
     
  9. turbofan

    turbofan

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    as the valve seems to have been seized and you have unseized it and got the gas to burn.well done.
    these can bead gas and cause the heat exchanger to melt and burst,so the second safety device kicks in when water floods from the heatexchanger an puts the gas burner out. :D :D
     
  10. potplant

    potplant

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    Hi turbofan you got it bang on
    The Push Rod was seized
    I will check for bead gas
    I'm going to fit three new (O-Ring 20 ID x 3.2mm Section) for the Push Rod this should cover any bead gas leakage
    I have some water leakage from the lower two O-Ring in the Water Governor Assembly
    I've ordered a new Diaphragm Rubber so I can change that when I do the three O-Ring that should sort every thing out.
    Then obviously check every joint for gas leakage
    Get some one in to check everything out
    Might there be any thing else
     
  11. DIYnot Local

    DIYnot Local

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    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


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