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Old 11-05-2011, 08:15 PM   #1
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1 t-stat works and 1 doesnt, single furnace

i have 1 furnace with 2 zones, 2 thermostats. the 1 upstairs works normally. the 1 downstairs will not turn on the heater. it will run the a/c and the fan. it worked fine 2 weeks ago. i tried replacing the thermostat, but still the same thing. any suggestions?

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Old 11-05-2011, 08:42 PM   #2
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1 t-stat works and 1 doesnt, single furnace

Check the wires in the zone panel.

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