Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater

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My heat runs, but does not shut off......my ac is not working..I need help with which wire goes where on the CT87N??? I currently have the blue wire in the W , the red wire in G, the green wire in R, and the white wire in Y. Please help

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  • Revefr3 Mar 19, 2011

    Are blue, red, green and white the only colors you have for the thermostat or are there more?

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I'm not sure if you received my clarification request or not. I will assume that the only colors you have for wire are what you stated in your problem description. Attach the red wire to R, the green wire to G, the white wire to W and the blue wire to Y..

After you have done this, make sure to look in the air handler to be sure the wires are tied to the same terminals inside as there should be a terminal board for them.

I hope this helps you get cool.

Rev

Posted on Mar 20, 2011

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