Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Thermostat auto-changeover mode unavailable

I installed a Honeywell Focuspro TH6000 series (model TH6110D1005) thermostat to replace my fairly new Braeburn 2000. I have AC and 1-stage regular gas heat and I bought the Honeywell because it has an auto-changeover feature between cool and heat.

I referenced the installation manuals for both the Braeburn and Honeywell to be sure I was connecting the right wires to the right terminals on the Honeywell. The descriptions of the functions of the four wires in both the Honeywell and Braeburn manual are the same, so I wired the Honeywell the same as the Braeburn. The jumper was used in the Braehurn and Honeywell.

Heat, cool and the fan work fine, as they did in the Braeburn. The problem is that I cannot configure the Honeywell to auto-changeover (the whole reason I bought it).

The Honeywell lets you select different modes to operate the thermostat in: heat, cool, auto-changeover and a heat-pump mode. The manuak mentions that heat pump mode will not appear on the display as an option if you don't have a heat pump (I do not have a heat pump and the option does not appear)..

The problem is that auto-changeover is also missing from the selections: heat, cool and off are the only mode choices offered.

Any ideas?

Thank you very much.

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  • Anonymous Mar 19, 2014

    TH6000 series states it changes from Heat to Cool automatically but it does not show up on the screen and says, "depending on how installed"

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  • 96 Answers

When you programed it did you go through all the setup #1-0 ,#3-0 ,#5-5 ,#12-1

Posted on Nov 25, 2008

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