Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
Problem for Honeywell Electronic Programmable Heat/Cool Thermostat -...

I removed the wires from the old thermostat before




By shikiro on Oct 18, 2009

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I removed the wires from the old thermostat before I realized that I needed to label them so that they could be placed in the proper place on the new thermostat.

Clarification Request

Posted by hohox5 on Oct 18, 2009

how many wires were hooked up what colors and was it a heating cooling stat

Best Solution

posted on Oct 19, 2009
Very Helpful)

Therinnaiguy

Rank: Guru  Honeywell Air Conditioners  Expert
Rating: 88%, 398 votes
Heating, red wire to R terminal and white wire to W terminal. Fan, green wire to G terminal. A/C, yellow wire to Y terminal, there may be a jumper from R1 to R2 terminals. If you have a blue wire it should go to C terminal.
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