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We just replaced the batteries in our Honeywell CT3400 thermostat, and for a moment or two, the display came on, but the thermostat was not responsive to the touchpad. Now, the there is no display, and we tried cleaning the contacts, then resetting the thermostat. Is there a replacement compatible with the CT3400?

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HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions
If you can’t find what you want, the bottom left and bottom of web
Page, they have homeowners assistance and Home products to get the help you need.

Posted on Jun 07, 2010

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