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    Rick0's Avatar
    Rick0 Posts: 1, Reputation: 1
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    #1

    Jan 30, 2011, 03:51 PM
    One of my Heating Zones stopped working
    I have a Mastertrol Mini Zone-2 heating system. One of the Zones stopped working. I checked the non working damper by wiring to the working zone and it worked; so the damper is not the issue. What would cause the 2nd zone not to work properly
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Jan 30, 2011, 03:56 PM
    It could be the t'stat for that zone or the control board. You eliminated the damper, good sleuthing. Look at the control panel, there is usually a wiring diagram and it may show voltage test points. Is the zone light green?
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