How to Program Honeywell T4 Pro thermostats

This digital thermostat has 7-day, 5-2, and 5-1-1 programmable options or a non-programmable option so you can vary the settings depending on your schedule.

After powering up the thermostat, the first step is setting the year. Press the Select button to awaken the screen, then press the Plus or Minus buttons to navigate to the desired year. Press the Select button when finished.

You will then need to set the month. Press the Plus or Minus buttons to navigate to the desired month, then press the Select button.

Next you will need to set up the day. Press the Plus or Minus buttons to navigate to the desired day, then press the Select button.

The Honeywell T4 Pro has two clock format options; 12 hour or 24 hour. Press the Plus or Minus buttons to choose the desired clock format, then press the Select button. Press the Plus or Minus buttons to navigate to the desired time. You can also press and hold the Plus or Minus buttons to cycle through the numbers faster. Press the Select button when you have the desired time. The settings will now be saved.

Press the Home button to access the Home screen.

There are various different types of System mode settings; including Heat, Cool, and off. Press the Mode button to cycle through the modes until the desired System mode is displayed.

The advanced menu allows you to adjust thermostat settings, including the time and program schedule. Press the Menu button, then press the Plus or Minus buttons to cycle through the advanced menu options.

To turn programming on or off, ensure that Program is displayed on the screen, then press the Select button.

To edit the program schedule, ensure that ON is displayed then press the Select button.

Press the Plus or Minus buttons to navigate to the desired program schedule, then press the Select button.

When setting the program schedule, you can program four time periods each day, with different settings for weekdays and weekends.

Wake refers to the time that you wake up. Away refers to the time you expect to leave your house. Home refers to the time that you expect to return home. Sleep refers to the time that you generally go to bed.

Press the Select button to select the desired time period.

You will first be asked to set the heating schedule. Press the Select button. Press the Plus or Minus buttons to navigate to the desired time, then press the Select button. Press the Plus or Minus buttons to navigate to the desired temperature, then press the Select button. You will now be asked to set the cooling schedule. Follow these same steps to set each program setting and schedule.

If there are certain programmable settings that you want turned off, press the Plus button to navigate to OFF then press the Select button.

When you're done with your changes, press the Home button. Your changes will save and you will return to the home screen.

To override your program schedule, press the Plus button to navigate to the desired temperature. Press the Hold button add either a temporary hold or a permanent hold. Press the Cancel button to cancel any changes.

There are two different types of fan options. Fan Auto only runs when the heating or cooling system is on, and Fan On runs the fan continuously. Press the fan button to cycle through the fan options.

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[NumiSmatiK]

*Solid, **Fastly.Cool** and gets the job done. For rooms where window-mounted air conditioning is not an option, this works very well. Easy set up, rapid cooling, and great design.*

[kimberlychevlin]

I just want to be able to get heat when I'm cold and A/C when I'm hot. This is the most difficult thermostat on earth

[nicslack]

This video was so helpful!!! My new thermostat is now programed. Thank you.

[dianacastaneda]

I feel good knowing that I am not the only one fighting with the thermostat.

[teresacardenas]

I understood the directions clearly, and I was able to program the thermostat. I am a new homeowner, and this system was installed in my home. I was getting frustrated having to walk up and down the stairs to change the temperature. Now that I have learned what temperatures we are comfortable with, I can set it in the program mode. I won't have to wake up in the middle of the night from the heat!

[geraldwest]

Thanks for making it overwhelmingly clear NOT to purchase this particular thermostat.

[mickeymad]

Wheres the guy who design this dam thermostat so I can smack him !!!

[kirkmachin]

Thank you. I read the comments and can't understand the difficulty people are having. I only rewound twice and figured it out. Come on people! I'm glad it does as much as it does because I don't want to heat or cool the house to my desired temp if I am not home to enjoy it. Thank you again. P.S. I'm am old guy.

[niktheref]

Do you NOT see Program available?

-Press and hold "Menu" and "+" for 3 seconds.
-You will see "ISU", press Select.
-Scroll until you see "120".
-Use the "+" or "-" to adjust the 120 setting to either 0, 2, 3, or 4.

0 = no programming
1 = programmable, weekdays + weekend (m-f, s/s)
2 = programmable, 5 days + sat + sun
3 = programmable, 7 days

[stevecobb]

Great, another overly complicated thermostat!

[deannahartman]

Thank you! I have had it for over a year and "locked" it without knowing how to unlock it. Also you explained the programming to me very well and now I almost NEVER have to even touch it!

[smylyface]

Thank you! I've had this thermostat for a year and could never figure it out. Your video does go a bit fast for people who are trying to follow along but FINALLY my heat/air come on when I want them to and my house stays at a comfortable temperature day and night. Loved waking up to a warm home after sleeping in a nice cool bedroom all night. Definitely makes it easier to get out of bed in the morning! 🙂

[ResurrectingMe]

Omfg, I just want to 2 buttons - Up to make it warmer, down to make it colder.

Why do these things need to be so complicated? 🙃

[solmilagroscastillorebollo]

Thank you so much. I was freezing...and this video make my sleeping time wonderful. Tons of thanks!

[obbe]

When I hit the menu button I don’t get the option to program the thermostat it goes straight to the time option...

[agrt]

The PROG option first appeared in my thermostat first time I tried setting it up, locked it, unlocked it, and it no longer appears, only time date

[ify]

I can’t access the weekly schedule on this thermostat!? How the hell do you program this thing? The prog option is not there after I push menu

[jelligauthier]

how can I erase all settings and start over, !!?

[adrianamontelongo]

Me looking at this video: pause, rewind, play, rewind, wait what?, Play, rewind, rewind, pause, play.

[cherylchatburn-ross]

How do you skip over the “leave and return”? In order to do a reset, do you have to start all over?