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Old 12-18-2010, 06:29 PM   #1
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new thermostat wiring


I just installed a new thermostat, I put the red wire to the R I put the white to the W, blue to the B and green to the G it is a honeywell CT87N I tried it on heat and the air cond, went on. what did I do wrong

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Old 12-18-2010, 06:46 PM   #2
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new thermostat wiring


DISCONNECT that blue wire. See if it works.

Do you have a yellow wire present?

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Old 12-19-2010, 08:13 PM   #3
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new thermostat wiring


see:

http://highperformancehvac.com/hvac-...at-color-chart
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Old 12-19-2010, 08:24 PM   #4
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new thermostat wiring


program wrong? read the o/r instructions.
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