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Boiler not firing in heating mode

  • 07-11-2014 11:00pm
    #1
    JonMac
    Registered Users, Registered Users 2 Posts: 469 ✭✭


    I've got a Buderus LPG gas boiler that has worked perfectly for 9 years.
    It runs a hot water tank and UFH.
    Normally it runs at a low flame to provide for the UHF and high flame when the water tank calls for heat. The modes are initiated by room stats and a thermocouple on the water tank.
    This week the boiler has refused to go into heating mode. In heating mode a 24V ac signal is sent out by the boiler and returned via a module that combines the 4 room stats. I have confirmed that that signal is correctly going back into the boiler.
    My gut feel is that I've got a dodgy connection in the wiring.
    Any other ideas?
    Thanks.


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