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Dunkirk PVWB-4D Standing Pilot, Gas Fired, Hot Water Boiler,

m294542 Member Posts: 1
My Dunkirk Boiler is not igniting. The pilot is on and when the thermostat calls for heat the furnace circulates, dampers opens, fan starts but the burners do not ignite. Help!


  • unclejohn
    unclejohn Member Posts: 1,757
    If the PV stands for power vent check the pressure control.
  • unclejohn
    unclejohn Member Posts: 1,757
    The pvwb I looked up has a spark ignition. Try cleaning the flame sensor and pilot
  • SuperTech
    SuperTech Member Posts: 1,792
    I would make sure the flue damper is opening all the way. If it is you should check for 24 at the B1 and B2 on the aquastat.