block vent safety switch

  1. Dkoss08

    Boiler randomly doesnt kick on

    if anyone could give some ideas that would be great. I have a hot water boiler system that sometimes does not kick on when thermostat calls for heat. It is a 2 zone boiler system with two thermostats. The damper is in the always open position. When not running the water pressure is between...
    • Dkoss08
    • Thread
    • block vent safety switch boiler damper gas coil valve
    • Replies: 10
    • Forum: Boiler Forum
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