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How do you start programming a Honeywell thermostat from scratch? We are new residents and want new times. We have tried twice to reset the programme, but the thermostat returns to the old ones.

Posted by Anonymous on

  • Sara Mink-Taylor
    Sara Mink-Taylor Nov 23, 2016

    Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Do you know the model number of the thermostat?

  • Anonymous Nov 23, 2016

    This is a Pro 2000 thermostat, manual says TH2110DH or TH2210DH but, without taking it off the wall, I would think it's the first. Thanks.



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Use "set" to enter programming mode. Once programmed, hit the "run" button to execute the program.

If you need further help, I’m available over the phone at

Posted on Nov 28, 2016

Testimonial: "We know this. It is how to completely wipe out the time settings that we were seeking advice, but we've since figured out that you can't ever do that. You just change to the next set times. Our thermostat seemed not to be accepting those and, especially in the morning, coming on a couple of hours before our set 'wake' time. Now we have set the temps way lower than we expect ever to experience (we hope!) and we override the set temp with our desired temp for as long as we need it."


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6ya staff

  • 2 Answers


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Posted on Jan 02, 2017


Tom Chichester

  • 54939 Answers

SOURCE: why will my programmable honeywell thermostat not keep changes to my schedule

Could be batteries need replacement

Posted on Apr 28, 2013


pete farenwald

  • 3 Answers

SOURCE: I have a Honeywell RTH2300B1012A digital

Replacement is Strongly Recommended.

Posted on Nov 19, 2014


  • 3289 Answers

SOURCE: The display on my Ampam by Honeywell programmable thermostat displays all 8s. Is it time to get a new thermostat?

"Funky" displays often indicate a problem with a control or processor. The simplest fix is removing power for a minute or two and trying again.

Doing this will likely erase any time / temperature program in the t-stat, so you should make note of it before attempting.

I'm not familiar with the t-stat you have, but if it is like most - it has a battery or two inside to maintain the program during power outages (and allows programming while in your easy chair). You should remove the battery(s) and remove it from the wall (most will simply pull away when unclipped / disconnected) to completely power down. Wait a moment and reinstall the battery(s) and reinstall to base on the wall.

Posted on Dec 03, 2014


  • 12962 Answers

SOURCE: My Honeywell 7-Day Programmable Push-Button Thermostat - RTH7500D starts to heat each morning at 5:00 AM. It is not programmed to do anything at 5:00AM. A/C works fine. Want to turn off 5:00 AM

See if there is some sort of reset control. U may not have programmed it but I assure you it is programmed to do so. Maybe some poltergeist is responsible for the anomaly.

If after doing everything possible to take care of the issue with no results you can always resort to opening the unit up, exposing the wires, and disconnecting the wire responsible for heat. Your user/ setup manual will identify the wire.

Posted on Oct 31, 2015



  • 85216 Answers

SOURCE: Wiring thermostat. Going from an old mercury unit to honeywell program able. How should I wire it.

Looks like you have already done it by the wire colors I see.

Posted on Jun 23, 2016

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