Honeywell T6 Pro User Manual
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Honeywell T6 Pro User Manual

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See also: Instruction and Installation Manual
T6 Pro

Programmable Thermostat

User Guide

Package Includes:
• T6 Pro Thermostat
• UWP Mounting System
• Honeywell Standard Installation
Adapter (J-box adapter)
• Honeywell Decorative Cover Plate –
Honeywell Decorative Cover Plate –
Small; size 4-49/64 in x 4-49/64 in x
Small; size 4-49/64 in x 4-49/64 in x
11/32 in (121 mm x 121 mm x 9 mm)
• Screws and anchors
• 2 AA Batteries
• Installation Instructions and User
Guide

Thermostat controls

• System status
information
Cool On/Heat On/Em
Heat On, Recovery,
Compressor Protection
• Schedule information
Following time based
schedule
• Actual time
• Mode
Select system mode
Heat/Off/Cool/Auto/
EM Heat (emergency
heat)
• Menu
Press to display options.
Start here to set a
program schedule
The screen will wake up by pressing any of the five buttons. If powered by the C wire, the screen stays lit for 45 seconds
after you complete changes. If powered by battery only, the screen stays lit for 8 seconds. Depending on how your

Customer assistance

Call Honeywell Customer Care toll-free at 1-800-468-1502.
thermostat was installed, the screen light may always be on.
• Indoor temperature
setpoint
Press + or – to change
temperature setting
• Actual indoor
temperature
• Temperature/
Navigation buttons
Press to increase or
decrease temperature
setpoint and to
navigate menus and
menu options
• Fan
Select Fan mode
Auto/On/Circulate
Table of Contents
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Frequently Asked Questions (22)

  • How do I program a schedule on my Honeywell T6 Pro thermostat?

    To program a schedule:

    1. Press Menu on your thermostat.
    2. When PROG is displayed, press Select. Then ON is displayed, press Select. (If you don't want to use a schedule, press [+] or [-] to display OFF, then press Select).
    3. Press [+] or [-] to select day or set of days to edit. Press Select.
    4. Press [+] or [-] to select a schedule period to edit (Wake, Away, Home, and Sleep). Press Select.
    5. ON is displayed. Press Select to keep the schedule period on. (Or press [+] and then Select to turn off the schedule period).
    6. Time starts blinking. Press [+] or [-] to adjust the schedule period start time. Press Select.
    7. Temperature starts blinking. Press [+] or [-] to adjust the “Heat” setpoint temperature. Press Select. Press [+] or [-] to adjust the “Cool” temperature setpoint. Press Select.
    8. Repeat steps 4 through 7 for the remaining schedule periods.
    9. Press Home when you're finished to save and return to the home screen. 1
    10. The schedule can be adjusted and turned ON or OFF by returning to Menu and following the steps above.

    For more information, see page 3 of the manual.
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  • How do I set the temperature on my Honeywell T6 Pro thermostat?

    To set the temperature:

    • Press the [+] or [-] buttons to change the temperature setting.
    • To temporarily override the schedule, adjust the temperature using [+] or [-]. The new setpoint will hold until the next scheduled time period begins. To cancel, press [+] or [-] and then Cancel.
    • To set a permanent hold, adjust the temperature using [+] or [-]. While "TEMPORARY HOLD" is flashing, press the Hold (Mode) button to change it to Permanent Hold. To cancel, press [+] or [-] and then Cancel.
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  • Why is my Honeywell T6 Pro thermostat not turning on?

    If your Honeywell T6 Pro thermostat is not turning on (display is blank), you should:

    • Check the circuit breaker and reset it if necessary.
    • Make sure the power switch for the heating & cooling system is on.
    • Ensure the furnace door is closed securely.
    • Verify that fresh AA alkaline batteries are correctly installed.

    For more information, see page 8 of the manual.
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  • What should I do if my Honeywell T6 Pro thermostat screen is blank?

    If your Honeywell T6 Pro thermostat screen is blank, you should:

    • Check the circuit breaker and reset it if necessary.
    • Make sure the power switch for the heating & cooling system is on.
    • Ensure the furnace door is closed securely.
    • Verify that fresh AA alkaline batteries are correctly installed.

    For more information, see page 8 of the manual.
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  • Why is my Honeywell T6 Pro thermostat not heating?

    If your Honeywell T6 Pro thermostat is not heating, consider the following:

    • Press the Mode button to set the system to Heat.
    • Ensure the desired temperature is set higher than the current indoor temperature.
    • Check the circuit breaker and reset it if necessary.
    • Make sure the power switch for the heating system is on.
    • Ensure the furnace door is closed securely.
    • Wait 5 minutes for the system to respond.

    For more information, see page 8 of the manual.
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  • How do I change the batteries in my Honeywell T6 Pro thermostat?

    To change the batteries in your Honeywell T6 Pro thermostat:

    1. When the low battery warning appears, gently press to loosen the thermostat.
    2. Carefully pull it from the wall mount.
    3. Insert fresh alkaline AA batteries.
    4. Reinstall the thermostat.
    • It is recommended to replace batteries once a year, or before leaving home for more than a month, even if the low battery icon does not appear.
    • If batteries are inserted within two minutes, the time and day will not have to be reset. All other settings are permanently stored in memory.

    For more information, see page 6 of the manual.
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  • Why does my Honeywell T6 Pro thermostat keep turning off?

    The display being blank could be due to several reasons:

    • The circuit breaker needs to be checked and reset.
    • The power switch for the heating & cooling system is off.
    • The furnace door is not closed securely.
    • The AA alkaline batteries are not correctly installed or need replacement.

    For more information, see page 8 of the manual.
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  • How do I take my Honeywell T6 Pro thermostat off 'Hold'?

    To take your thermostat off 'Hold':

    • If it's a temporary hold, press [+] or [-] and then press Cancel.
    • If it's a permanent hold, press [+] or [-] and then press Cancel.

    For more information, see page 4 of the manual.
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  • Why is my Honeywell T6 Pro thermostat not following its programmed schedule?

    Your thermostat might not be following its programmed schedule because a temporary or permanent override is active.

    • A temporary override holds the new setpoint until the next scheduled time period begins.
    • A permanent override will maintain the set temperature indefinitely.
    • To cancel either hold, press [+] or [-] and then press Cancel.

    For more information, see page 4 of the manual.
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  • How do I unlock my Honeywell T6 Pro thermostat?

    To unlock your Honeywell T6 Pro thermostat:

    1. Press the CENTER button.
    2. Enter the password "1234". To enter the password, press [+] or [-] to change the first digit, then press Select. Repeat this process for the second through fourth digits.
    3. After entering all four numbers, press Select again. This will unlock the keypad.
    • If the code is incorrect, the screen will flash "--". Press Back to go back a step and re-enter the correct number.

    For more information, see page 5 of the manual.
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  • Is a C-wire required for installing the Honeywell T6 Pro thermostat, and what is its purpose?

    The C-wire provides AC power to the thermostat. If your thermostat is wired to run on AC power (via a C-wire), then batteries are optional for backup. If it is not wired to run on AC power, then batteries are required. When powered by the C-wire, the screen stays lit for 45 seconds after changes, compared to 8 seconds if battery-only.

    Was this helpful?
  • Why is my Honeywell T6 Pro thermostat blinking 'Heat On'?

    If "Heat On" is flashing, it indicates that the compressor protection feature is engaged. This feature prevents damage by forcing the compressor to wait a few minutes before restarting after shutdown. The message will stop flashing and the compressor will turn on once the safe wait time has elapsed, which is typically 5 minutes.

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  • How do I temporarily override the programmed schedule on my Honeywell T6 Pro thermostat?

    To temporarily override the programmed schedule:

    1. Press [+] or [-] to adjust the temperature to your desired setpoint.
    2. No further action is needed. The new setpoint temperature will be held until the next scheduled time period begins.
    3. To cancel the Temporary Hold, press [+] or [-] and then press Cancel.

    For more information, see page 4 of the manual.
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  • How do I set a permanent temperature hold on my Honeywell T6 Pro thermostat?

    To set a permanent temperature hold on your Honeywell T6 Pro thermostat:

    1. Press [+] or [-] to adjust the temperature to your desired setpoint.
    2. While "TEMPORARY HOLD" is displayed and the setpoint temperature is flashing, press the Hold (Mode) button to change it to Permanent Hold.
    3. To cancel the Permanent Hold, press [+] or [-] and then press Cancel.

    For more information, see page 4 of the manual.
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  • How often should I replace the batteries in my Honeywell T6 Pro thermostat?

    You should replace the batteries in your Honeywell T6 Pro thermostat once a year, or before leaving home for more than a month, even if the low battery icon has not appeared. The low battery icon typically appears about two months before the batteries are depleted.


    For more information, see page 6 of the manual.
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  • Why is my Honeywell T6 Pro thermostat short cycling and how can I fix it?

    Your Honeywell T6 Pro thermostat has a built-in compressor protection feature to prevent damage that can occur if the compressor restarts too soon after shutdown. This feature forces the compressor to wait a few minutes before restarting. During this wait time, the display will flash "Cool On" or "Heat On". The message stops flashing and the compressor turns on once the safe wait time has elapsed.

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  • How do I use the auto changeover mode on my Honeywell T6 Pro thermostat?

    To use the auto changeover mode:

    1. Press the Mode button to cycle through the available System modes.
    2. Continue cycling until Auto is displayed and leave it to activate.

    For more information, see page 2 of the manual.
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  • How do I adjust the fan settings, such as 'Auto' or 'Circulate', on my Honeywell T6 Pro thermostat?

    To adjust the fan settings on your Honeywell T6 Pro thermostat:

    1. Press the Fan button to cycle to the next available Fan mode.
    2. Cycle through the modes until the required Fan mode is displayed and leave it to activate.
    • Available Fan modes include:
      • Auto: Fan runs only when the heating or cooling system is on.
      • On: Fan is always on.
      • Circ: Fan runs randomly about 33% of the time.

    For more information, see page 2 of the manual.
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  • How do I change the temperature display from Fahrenheit to Celsius on my Honeywell T6 Pro thermostat?

    To change the temperature display from Fahrenheit to Celsius:

    1. Press Menu.
    2. Press [+] or [-] to go to F / C. Press Select.
    3. Press [+] or [-] for F or C. Then press Select.
    4. Press Home to return to the home screen.

    For more information, see page 4 of the manual.
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  • How do I activate or use emergency heat on my Honeywell T6 Pro thermostat?

    To activate emergency heat:

    1. Press the Mode button to cycle through the available System modes.
    2. Continue cycling until Em Heat is displayed and leave it to activate.

    For more information, see page 2 of the manual.
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  • How do I reset the air filter reminder on my Honeywell T6 Pro thermostat?

    To reset the air filter reminder on your Honeywell T6 Pro thermostat:

    1. The alert icon will appear on the Home screen.
    2. Press Menu, and then press [+] until the display shows ALRT.
    3. Press Select to display which alert(s) are present.
    4. The message REPL (REPLACE AIR FILTER) will appear.
    5. To clear the reminder, press Select, and then press [+] to go to CLER (Clear).
    6. Press Select again to clear the air filter reminder.
    • You can also snooze the reminder for 7 days by pressing Select when SNZE (SNOOZE) appears, and then pressing Select again.

    For more information, see page 7 of the manual.
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  • Does the Honeywell T6 Pro thermostat offer a vacation mode or away setting?

    Yes, the Honeywell T6 Pro thermostat offers an "Away" setting as part of its program schedule. This setting is for the time you leave home and the temperature you want while you are away, typically an energy-saving level. The recommended default temperature for the Away setting is 62° for Heat and 85° for Cool.


    For more information, see page 3 of the manual.
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Questions and answers

Joyce Beseda
July 27, 2025

Touched wrong button.Upper left shows 0223 instead of following schedule. No time displayed. How to correct?

0
1 comments:
Mr. Anderson
September 5, 2025

To correct the Honeywell Pro thermostat showing "0223" instead of the scheduled time, you need to reset or adjust the time and date settings. Follow these steps:

1. Press the "Select" button to enter the settings.
2. Use the right arrow button to navigate to the time screen.
3. Use the plus (+) and minus (–) buttons to adjust the time.
4. Press "Select" to confirm the correct time.
5. Press the right arrow again to go to the date screen.
6. Use the plus (+) and minus (–) buttons to set the correct year, month, and day.
7. Press "Select" to confirm each setting.

This will set the correct time and date, ensuring the schedule displays properly.

This answer is automatically generated

0
Linds Vernau
June 1, 2025

There is nothing on the screen. Turned power off and back on, and still nothing.

User image 683cc9f0d09cd
0
1 comments:
Mr. Anderson
June 1, 2025

If the Honeywell Pro thermostat screen is blank after power cycling, try the following steps:

1. Check if the thermostat has batteries and replace them if needed.
2. Confirm that the circuit breaker is turned on and power is reaching the HVAC system.
3. Ensure the furnace door is securely closed, as some systems won’t power the thermostat if the door is open.
4. Check for a fuse in the furnace control board and replace it if blown.
5. If the thermostat still stays blank, a technician may be needed to inspect the system wiring or control board.

This answer is automatically generated

-1
Jake
February 19, 2025

How do I take the controller off its mount

0
1 comments:
Mr. Anderson
May 14, 2025

To remove the Honeywell Pro controller from its mount, pull the thermostat straight out from the UWP (Universal Wall Plate).

This answer is automatically generated

0
Lisa D
January 22, 2025

I have locked the thermostat how do i get it unlocked??

0
1 comments:
Mr. Anderson
February 10, 2025

To unlock the Honeywell T6 Pro thermostat:

1. Press the CENTER button on the thermostat.
2. Enter the password 1234:
- Use the up or down arrows to adjust the first digit.
- Press Select to confirm the digit and move to the next one.
- Repeat this process for all four digits.
3. Once all four digits are entered, press Select again to unlock the thermostat.

If the code is entered incorrectly, the screen will display blinking dashes ("--"). In that case, press Back to correct the digits and try again.

This answer is automatically generated

0
Jim
October 12, 2025

How do I turn down the light intensity on one of the thermostats?

0
James W Monroe
October 9, 2025

how do i get it off of permanent hold and set temp/

0
Donna
September 20, 2025

How do I take it off temporary hold

0
Jill
September 12, 2025

What is the difference in heat and em heat?

0
Verne Bourgeois
September 8, 2025

How do I set the home pro thermostat for a vacation period when we will not be home?

0

Related Manuals for Honeywell T6 Pro

Summary of Contents for Honeywell T6 Pro

  • Page 1: Programmable Thermostat

    The screen will wake up by pressing any of the five buttons. If powered by the C wire, the screen stays lit for 45 seconds after you complete changes. If powered by battery only, the screen stays lit for 8 seconds. Depending on how your thermostat was installed, the screen light may always be on. Customer assistance Call Honeywell Customer Care toll-free at 1-800-468-1502.

  • Page 2: Set Time And Date

    System operation settings 1 Press the Mode button to cycle to the next available System mode. 2 Cycle through the modes until the required System mode is displayed and leave it to activate. NOTE: Available System modes vary by model and system settings.

  • Page 3: To Adjust Program Schedules

    Program Schedule You can program four time periods each day, with different settings for weekdays and weekends. We recommend the pre-sets (shown in the table below), since they can reduce your heating/cooling expenses. Heat Cool Wake - Set to the time you wake up and the °...

  • Page 4: Program Schedule Override

    Program schedule override (temporary) 1 Press to adjust the temperature. 2 Once at the desired setpoint temperature, no further action is needed. The new setpoint temperature will be held until the next scheduled time period begins. For more information on schedule time periods, see “Program Schedule”...

  • Page 5: Adjusting Keypad Lockout

    7 Press Back to go back a step to enter the correct number and press Select. Adaptive Intelligent Recovery Over time, the Honeywell T6 Pro Thermostat “learns” how long it takes your system to reach the temperature you want. It turns on the heating or cooling system earlier to make sure you’re comfortable at the time you expect.

  • Page 6: Battery Replacement

    Battery replacement Batteries are optional (to provide backup power) if your thermostat was wired to run on AC power when installed. If your thermostat When the low battery warning appears, press was not wired to run on AC power, then gently to loosen the batteries are required.

  • Page 7: Air Filter Reminder

    Home 4 The message REPL (REPLACE AIR FILTER) appears. 5 The reminder can be snoozed or cleared. Honeywell recommends changing the air filter before clearing the reminder. 6 To snooze, press Select. The word SNZE (SNOOZE) appears. 7 Press Select again to snooze the reminder for 7 days.

  • Page 8: Troubleshooting

    Troubleshooting If you have difficulty with your thermostat, please try the following suggestions. Most problems can be corrected quickly and easily. Display is • Check circuit breaker and reset if necessary. blank • Make sure power switch for heating & cooling system is on. •...

  • Page 9: Year Limited Warranty

    This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.
  • Page 10 Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 http://yourhome.honeywell.com ® U.S. Registered Trademark. © 2016 Honeywell International Inc. 33-00182EFS—01 M.S. 06-16 33-00182EFS-01 Printed in U.S.A.

  • Page 11: Commandes Du Thermostat

    45 secondes une fois les modifications terminées. Si l’alimentation est obtenue par les piles, l’écran reste allumé pendant 8 secondes. En fonction de l’installation du thermostat, l’écran peut rester allumé en permanence. Service à la clientèle Appelez le numéro gratuit du service à la clientèle de Honeywell en composant le 1-800-468-1502.
  • Page 12 Réglages pour le fonctionnement du système 1 Appuyez sur le bouton Mode pour passer au prochain mode de système disponible. 2 Faites défiler les modes jusqu’à ce que le mode de système requis soit affiché, et laissez-le s’activer. REMARQUE : Les modes de système disponibles varient en fonction du modèle et des paramètres du système.
  • Page 13 Programmation Vous pouvez programmer quatre périodes de temps par jour, avec des réglages différents pour les jours de la semaine et les fins de semaine. Nous recommandons les paramètres prédéfinis (illustrés dans le tableau ci-dessous), car ils permettent de réduire vos frais de chauffage/refroidissement.

  • Page 14: Dérogation (Temporaire) Au Programme

    Dérogation (temporaire) au programme 1 Appuyez sur pour régler la température. 2 Une fois la température de consigne souhaitée obtenue, aucune autre action n’est requise. La nouvelle température de consigne est utilisée jusqu’à ce que la prochaine période commence. Pour plus d’informations sur les périodes du programme, consultez la section Programmation à...

  • Page 15: Réglage Du Verrouillage Du Clavier

    Select. Système de récupération intelligent adaptatif Au fil du temps, le thermostat T6 Pro de Honeywell apprend à reconnaître le temps requis par le système pour atteindre la température désirée. Il active préalablement le chauffage ou le refroidissement pour garantir une température confortable au moment voulu.

  • Page 16: Remplacement Des Piles

    Remplacement des piles Les piles sont facultatives (pour fournir une alimentation de secours) si le thermostat a été câblé sur le courant secteur lors de Lorsque l’avertissement de charge faible des l’installation. Si ce n’est pas le cas, les piles piles s’affiche, appuyez sont requises.
  • Page 17 4 The message REPL (REPLACE AIR FILTER) appears. 5 Le rappel peut être mis en pause ou effacé. Honeywell recommande de remplacer le filtre à air avant d’effacer le rappel. 6 Pour mettre en pause, appuyez sur Select. Le mot SNZE (Pause) s’affiche.

  • Page 18: Dépannage

    Dépannage En cas de difficultés avec le thermostat, essayez les suggestions suivantes. La plupart des problèmes peuvent être réglés rapidement et facilement. Rien n’apparaît • Vérifiez le disjoncteur et réinitialisez-le si nécessaire. à l’écran • Assurez-vous que l’interrupteur de marche-arrêt du système de chauffage et de refroidissement est sur marche.

  • Page 19: Garantie Limitée De 5 Ans

    Garantie limitée de 5 ans Honeywell garantit ce produit, à l’exception des piles, contre tout défaut de pièce ou de main d’œuvre, durant une période de cinq (5) ans à partir de la date d’achat si le produit est utilisé et entretenu convenablement. En cas de défaillance ou de mauvais fonctionnement pendant la période de garantie, Honeywell remplacera...
  • Page 20 Solutions de régulation et d’automatisation Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 http://yourhome.honeywell.com ® Marque de commerce déposée aux É.-U. © 2016 Honeywell International Inc. 33-00182EFS—01 M.S. 06-16 33-00182EFS-01 Imprimé aux États-Unis...

  • Page 21: Controles Del Termostato

    únicamente, la pantalla permanecerá iluminada durante 8 segundos. Dependiendo de la forma como se instaló su termostato, la luz de la pantalla puede estar siempre encendida. Asistencia al cliente Llame gratis al Departamento de servicio al cliente de Honeywell al 1-800-468-1502.
  • Page 22 Configuraciones de funcionamiento del sistema 1 Presione el botón Mode para pasar al siguiente modo disponible del sistema. 2 Avance a través de los modos hasta que se muestre el modo requerido del sistema y déjelo para activarlo. NOTA: Los modos disponibles del sistema varían según el modelo y las configuraciones del sistema.

  • Page 23: Para Ajustar Los Cronogramas Del Programa

    Cronograma del programa Puede programar cuatro períodos de tiempo por día, con diferentes configuraciones para los días de semana y los fines de semana. Recomendamos las configuraciones preestablecidas (que se muestran en el cuadro a continuación), debido a que estas reducen los gastos de calefacción y refrigeración.
  • Page 24 Anulación del cronograma del programa (temporal) 1 Presione para regular la temperatura. 2 Una vez que se encuentre en la temperatura del punto de referencia deseado, no necesita hacer nada más. El nuevo punto de referencia de la temperatura se mantendrá hasta que comience el siguiente período.

  • Page 25: Protección Del Compresor Incorporada

    Select (seleccionar). Recuperación inteligente adaptable Con el tiempo, el termostato T6 Pro “sabe” cuánto demora el sistema en alcanzar la temperatura que desea. Este activa el sistema de calefacción o refrigeración más temprano para que esté confortable a la hora que usted espera.

  • Page 26: Reemplazo De Las Baterías

    Reemplazo de las baterías Las baterías son opcionales (para ofrecer suministro de energía de respaldo) si su termostato fue cableado para funcionar con Cuando aparezca la advertencia de batería corriente CA cuando fue instalado. Si su con poca carga, presione termostato no fue cableado para funcionar suavemente para aflojar el con suministro de energía CA, necesita...
  • Page 27 4 The message REPL (REPLACE AIR FILTER) appears. 5 El recordatorio se puede repetir o borrar. Honeywell recomienda el cambio del filtro de aire antes de eliminar el recordatorio. 6 Para repetir el aviso, presione Select (seleccionar). Aparece la palabra SNZE (repetición del aviso).

  • Page 28: Localización Y Solución De Problemas

    Localización y solución de problemas Si tiene dificultades con el termostato, intente seguir las sugerencias que se indican a continuación. La mayoría de los problemas pueden solucionarse de manera fácil y rápida. La pantalla está • Revise el interruptor de circuito y, si es necesario, en blanco reinícielo.

  • Page 29: Garantía Limitada De 5 Años

    Garantía limitada de 5 años Honeywell garantiza este producto, a excepción de la batería, por el término de cinco (5) años, contra cualquier defecto de fabricación o de los materiales, a partir de la fecha de compra por parte del consumidor, en condiciones normales de uso y servicio.
  • Page 30 Soluciones de control y automatización Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 http://yourhome.honeywell.com ® Marca comercial registrada en los EE. UU. © 2016 Honeywell International Inc. 33-00182EFS—01 M.S. 06-16 33-00182EFS-01 Impreso en los EE. UU.

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