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Boiler firing even though officially there is no power going to it.

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  • 02-07-2022 10:05am
    #1
    Mywifetoldme
    Registered Users Posts: 35 ✭


    I have a Grant oil boiler Euro flame 90/120 that fires up even though the two Myson pumps are not light up.

    It would do it occasionally about once ever 6 months. Now it seems too be doing it most of the time.

    I have it serviced once a year. You wouldn't notice it in the winter time, but this time of the year you would.

    I don't think it is haunting any ideas what's happening.

    Thanks in advance.



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    #2
    Gant21
    Registered Users Posts: 1,261 ✭✭✭Gant21


    Frost stat bringing it on. Was 3 degree there one morning last week.



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    #3
    Wearb
    Moderators, Home & Garden Moderators Posts: 6,220 Mod ✭✭✭✭Wearb


    Could be stuck contacts on the micro switch on one of the motorised valves.

    Please follow site and charter rules. "Resistance is futile"



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    #4
    Mywifetoldme
    Registered Users Posts: 35 ✭Mywifetoldme


    Thanks. I will get someone to check it.



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    #5
    jimf
    Registered Users Posts: 3,952 ✭✭✭jimf


    as wearb says above re motorised valves



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