Little heat in one zone

Discussion in 'HVAC Heating & Cooling' started by joslinm, Nov 23, 2008.

  1. joslinm

    joslinm New Member

    Nov 23, 2008
    I've got a Weil McClain GV 4 with 4 taco zone valves. The one that heats my downstairs seems to work when it feels like. I switched the heads on the Taco valve to a known working one to eliminate that question. I do get heat if I push the lever to manual from auto. Can the valve be the problem rather than the head?
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