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Hot water baseboard system

Hot water baseboard system, 5 zones
In two of the zones, when the thermostat calls for heat, the valve opens, but the circulator doesn't come on.
Where is the problem?


  • Jamie HallJamie Hall Posts: 10,279Member
    Check all your wiring and the end switches on the valves for starters.

    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.

    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • delta Tdelta T Posts: 743Member
    most likely bad end switches. Are these honeywell zone valves? depending on how old they are, you can most likely change out the head without draining any water.
  • JimGloseJimGlose Posts: 3Member
    Thanks fellas!
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