Honeywell Home ProSeries Thermostat Manual: Installation & Programming (2023)

The Honeywell Home ProSeries Thermostat is a high-tech device that offers advanced features to make your home more comfortable and energy-efficient. The Honeywell Pro Series Thermostat Manual provides detailed instructions for installation and programming of the T6 Pro model. The package includes the thermostat, UWP mounting system, Honeywell standard installation adapter, decorative cover plate, screws and anchors, and 2 AA batteries. The manual also includes instructions for optional cover plate installation and UWP mounting system installation. The wiring terminal designations are provided for conventional systems, heat-only systems, heat-only systems with fan, cool-only systems, and heat pump systems. The thermostat mounting instructions are also provided to ensure proper installation. The manual also includes information on system operation settings, fan operation settings, installer setup (ISU), advanced setup options (ISU), and system test. The default security code for the Honeywell Pro Series thermostat is 1234. The Honeywell Pro Series Thermostat Manual is an essential guide for anyone looking to install or program the T6 Pro model.

Contents hide

1Honeywell Pro Series Thermostat

2Package Includes

2.1Optional Cover Plate installation

2.2Power options

2.3Setting Slider Tabs

3Wiring terminal designations

4NOTES

5Thermostat mounting

6System operation settings

7Fan operation settings

8Installer setup (ISU)

9Advanced setup options (ISU)

10Installer system test

11Specifications

11.1Customer assistance

11.2SPECIFICATION

12FAQS

13Video

14Related Posts

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (1)

Honeywell Pro Series Thermostat

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (2)Honeywell Pro Series Thermostat
Model : T6 Pro

Other Honeywell Pro Thermostat Manuals:

  • T4 Pro
  • T6 Pro
  • RTH5160 Non-Programmable Thermostat
  • WiFi Touchscreen Thermostat Installation Manual
  • WiFi Color Touchscreen Thermostat
  • VisionPRO WiFi Thermostat

Package Includes

  • T6 Pro Thermostat
  • UWP Mounting System
  • Honeywell Standard Installation Adapter (J-box adapter)
  • Honeywell Decorative Cover Plate –Small; size 4-49/64 in x 4-49/64 in x11/32 in (121 mm x 121 mm x 9 mm)
  • Screws and anchors
  • 2 AA Batteries
  • Installation Instructions and User Guide

Optional Cover Plate installation

NOTE: If Optional Cover Plate is not required, see “UWP Mounting System installation” on next page.

Use the Optional Cover Plate when:

  • Mounting the thermostat to an electrical junction box
  • Or when you need to cover paint gap from old thermostat.
  1. Separate the Junction Box Adapter from the Cover Plate. See Figure 1.Honeywell Home ProSeries Thermostat Manual: Installation & Programming (3)
  2. Mount the Junction Box Adapter to the wall or an electrical box using any of the eight screw holes. Insert and tighten mounting screws supplied with Cover Plate Kit. Do not overtighten. See Figure 2. Make sure the Adapter Plate is level.
  3. Attach the UWP by hanging it on the top hook of the Junction Box Adapter and then snapping the bottom of the UWP in place. See Figure 3.Honeywell Home ProSeries Thermostat Manual: Installation & Programming (4)
  4. Snap the Cover Plate onto the Junction Box Adapter. See Figure 4.Honeywell Home ProSeries Thermostat Manual: Installation & Programming (5)UWP Mounting System installation
  5. Before starting, turn the power off at the breaker box or switch. Open package to find the UWP. See Figure 5.
  6. Position the UWP on wall. Level and mark hole positions. See Figure 6. Drill holes at marked positions, and then lightly tap supplied wall anchors into the wall using a hammer.
    Drill 7/32” holes for drywall.Honeywell Home ProSeries Thermostat Manual: Installation & Programming (6)
  7. Pull the door open and insert the wires through wiring hole of the UWP. See Figure 7.
  8. Place the UWP over the wall anchors. Insert and tighten mounting screws supplied with the UWP. Do not overtighten. Tighten until the UWP no longer moves. Close the door. See Figure 8.
Honeywell Home ProSeries Thermostat Manual: Installation & Programming (7)

Power options

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (8)

Insert R and C wires into designated terminals for primary AC power (C terminal is optional if batteries are installed, but it is recommended). Remove wires by depressing the terminal tabs.

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (9)

Insert AA batteries for primary or backup power.

Setting Slider Tabs

Set R Slider Tab

  • Use built-in jumper (R Slider Tab) to differentiate between one or two transformer systems.
  • If there is only one R wire, and it is connected to the R, Rc, or RH terminal, set the slider to the up position (1 wire).
  • If there is one wire connected to the R terminal and one wire connected to the Rc terminal, set the slider to the down position (2 wires).
Honeywell Home ProSeries Thermostat Manual: Installation & Programming (10)

NOTE: Slider Tabs for U terminals should be left in place for T6 Pro models.

Wiring terminal designations

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (11)

Note: Not all terminals may be used, depending on the system type that is being wired. The most commonly used terminals are shaded.

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (12)
Honeywell Home ProSeries Thermostat Manual: Installation & Programming (13)
  • Terminal can be jumped using Slider Tab. See “Setting Slider Tabs” above.
  • The THP9045A1023 Wire Saver Module is used on heat/cool systems when you only have four wires at the thermostat, and you need a fifth wire for a common wire. Use the K terminal in place of the Y and G terminals on conventional or heat pump systems to provide control of the fan and the compressor through a single wire—the unused wire then becomes your common wire. See THP9045 instructions for more information.

Wiring conventional systems: forced air and hydronics
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.

  • 1H/1C System (1 transformer)
  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor
  • C 24VAC common [3]
  • W Heat relay
  • G Fan relay

Heat-only System

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • C 24VAC common [3]
  • W Heat relay

Heat-only System (Series 20) [5]

  • R Series 20 valve terminal “R” [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Series 20 valve terminal “W”
  • C 24VAC common [3]
  • W Series 20 valve terminal “B”

Heat-only System (power open zone valve) [5]

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • W Valve
  • C 24VAC common [3]

1H/1C System (2 transformers)

  • R Power (heating transformer) [1]
  • Rc Power (cooling transformer) [1]
  • Y Compressor contactor
  • C 24VAC common [3, 4]
  • W Heat relay
  • G Fan relay

Heat-only System with Fan

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • C 24VAC common [3]
  • W Heat relay
  • G Fan relay

Cool-only System

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor
  • C 24VAC common [3]
  • G Fan relay

2H/2C System (1 transformer) [6]

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor (stage 1)
  • C 24VAC common [3]
  • W Heat relay (stage 1)
  • G Fan relay
  • W2 Heat relay (stage 2)
  • Y2 Compressor contactor (stage 2)

NOTES

Wire specifications: Use 18- to 22-gauge thermostat wire. Shielded cable is not required.

  1. Power supply. Provide disconnect means and overload protection as required.
  2. Move R-Slider Tab on UWP to the R setting. For more information, see “Setting Slider Tabs” on page 3
  3. Optional 24VAC common connection.
  4. Common connection must come from cooling transformer.
  5. In ISU set Heat system type to Radiant Heat. Set number of cool stages to 0.
  6. In Installer Setup, set system type to 2Heat/2Cool Conventional

Wiring heat pump systems
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.

  • 1H/1C Heat Pump System
  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor
  • C 24VAC common [3]
  • O/B Changeover valve [7]
  • G Fan relay

2H/1C Heat Pump System [8]

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor
  • C 24VAC common [3]
  • O/B Changeover valve [7]
  • G Fan relay
  • Aux Auxiliary heat
  • E Emergency heat relay
  • L Heat pump fault input

2H/2C Heat Pump System [9]

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor (stage 1)
  • C 24VAC common [3]
  • O/B Changeover valve [7]
  • G Fan relay
  • Y2 Compressor contactor (stage 2)
  • L Heat pump fault input

3H/2C Heat Pump System (TH6320U only) [10]

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor (stage 1)
  • C 24VAC common [3]
  • O/B Changeover valve [7]
  • G Fan relay
  • Aux Auxiliary heat
  • E Emergency heat relay
  • Y2 Compressor contactor (stage 2)
  • L Heat pump fault input

Dual Fuel System

  • R Power [1]
  • Rc [R+Rc joined by Slider Tab] [2]
  • Y Compressor contactor (stage 1)
  • C 24VAC common [3]
  • O/B Changeover valve [7]
  • G Fan relay
  • Aux Auxiliary heat
  • E Emergency heat relay
  • Y2 Compressor contactor (stage 2 – if needed)
  • L Heat pump fault input
  • S Outdoor sensor
  • S Outdoor sensor

NOTES
Wire specifications: Use 18- to 22-gauge thermostat wire. Shielded cable is not required.

  1. Power supply. Provide disconnect means and overload protection as required.
  2. Move R-Slider Tab on UWP to the R setting. For more information, see “Setting Slider Tabs” on page 3
  3. Optional 24VAC common connection.
  4. In Installer Setup, set system type to 2Heat/2Cool Conventional.
  5. In Installer Setup, set changeover valve to O (for cool changeover) or B (for heat changeover).
  6. In ISU set Heat system type to Heat pump. 1 compressor and 1 stage of backup heat.
  7. In ISU set Heat system type to Heat pump. 2 compressors and 0 stage of backup heat.
  8. In ISU set Heat system type to Heat pump. 2 compressors and 1 stage of backup heat.

Thermostat mounting

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (14)
  1. Push excess wire back into the wall opening.
  2. Close the UWP door. It should remain closed without bulging.
  3. Align the UWP with the thermostat, and push gently until the thermostat snaps in place.
  4. Turn the power on at the breaker box or switch.

System operation settings

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (15)
  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.

System modes:

  • Auto
  • Heat
  • Cool
  • Em Heat
  • Off

Fan operation settings

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (16)
  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.

NOTE: Available Fan modes vary with system settings.

Fan modes:

  • 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.

Installer setup (ISU)

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (17)
  1. Press and hold CENTER and + buttons for approximately 3 seconds to enter advanced menu.
  2. Press Select to enter ISU.
  3. Press Select to cycle through menu setup options.
  4. Press + or – to change values or select from available options.
  5. Press Select and confirm your settings or press Back to ignore changes and return to ISU menu screen to continue editing another setup option.
  6. To finish setup process and save your setting, press Home and return to Home screen.

NOTE: A complete list of all setup (ISU) parameters and options starts below and continues through page 10.

Advanced setup options (ISU)


NOTE: Depending on system settings, not all options may be available.

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (18)
Honeywell Home ProSeries Thermostat Manual: Installation & Programming (19)
Honeywell Home ProSeries Thermostat Manual: Installation & Programming (20)

Installer system test

To perform a System Test:

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (21)
  1. Press and hold CENTER and + buttons for approximately 3 seconds to enter advanced menu.
  2. Use + to go to TEST. Press Select to enter System Test.
  3. Use + to change between Heat, Cool, Fan, Em Heat, or Ver (thermostat version information). Press Select.
  4. Press + to turn stages on one at a time, and press to turn them off.
  5. Use the Home button to exit the System Test.

System test System status
Shaded areas below apply only to TH6320U/TH6220U or as otherwise noted.

Default security code

The default security code for the Honeywell Pro Series thermostat is 1234

Heat

0 All Off
1 Heat Stage 1 on
2 Heat Stage 2 also on
3 Heat Stage 3 also on

Cool
0 All Off
1 Cool Stage 1 on
2 Cool Stage 2 also on

Em Heat
0 All Off
1 Em Heat on

Fan
0 Fan Off
1 Fan On

Specifications

Temperature Ranges
Heat: 40 °F to 90 °F (4.5 °C to 32.0 °C)
Cool: 50 °F to 99 °F (10.0 °C to 37.0 °C)

Working Ambient Temperature
32 °F to 120 °F (0 C° to 48.9 °C)

Operating Ambient Temperature
37 °F to 102 °F (2.8 °C to 38.9 °C)

Shipping Temperature
-20 °F to 120 °F (-28.9 °C to 48.9 °C)

Operating Relative Humidity
5% to 90% (non-condensing)

Physical Dimensions in inches (mm) (H x W x D)
4-1/16” H x 4-1/16” W x 1-5/32” D
103.5 mm H x 103.5 mm W x 29 mm D

Electrical Ratings

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (22)

CAUTION: ELECTRICAL HAZARD
Can cause electrical shock or equipment damage. Disconnect power before
beginning installation.

CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection is bypassed during testing. To prevent equipment damage, avoid cycling the compressor quickly.

CAUTION: MERCURY NOTICE
If this product is replacing a control that contains mercury in a sealed tube, do not place the old control in the trash. Contact your local waste management authority for instructions regarding recycling and proper disposal.

Pull to remove the thermostat from the UWP

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (23)

Customer assistance

For assistance with this product, please visit customer.honeywell.com
Or call Honeywell Customer Care toll-free at
1-800-468-1502.

Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
® U.S. Registered Trademark.
© 2016 Honeywell International Inc.
33-00181EFS—01 M.S. 06-16
Printed in U.S.A.
Printed in U.S.A.

SPECIFICATION

Product NameHoneywell Pro Series Thermostat
ModelT6 Pro
Package IncludesT6 Pro Thermostat, UWP Mounting System, Honeywell Standard Installation Adapter (J-box adapter), Honeywell Decorative Cover Plate –Small; size 4-49/64 in x 4-49/64 in x11/32 in (121 mm x 121 mm x 9 mm), Screws and anchors, 2 AA Batteries, Installation Instructions and User Guide
Optional AccessoriesCover Plate
Wiring Terminal DesignationsConventional systems, Heat-only systems, Heat-only systems with fan, Cool-only systems, and Heat pump systems
Power OptionsPrimary AC power or AA batteries for primary or backup power
System Operation SettingsAuto, Heat, Cool, Em Heat, Off
Fan Operation SettingsAuto, On, Circ
Installer Setup (ISU)Advanced setup options for system type, changeover valve, and heat system type
Advanced Setup Options (ISU)Heat system type, number of cool stages, and radiant heat system type
Installer System TestHeat
Default Security Code1234

FAQS

Does it switch from heat to cool automatically?

Yes, but “System Changeover” in the ISU menu must be changed from the default value of 0 (“Manual”) to 1 (“Automatic”), then “Auto” can be selected as one of the operating modes using the “Mode” button.

Does this work with 24 voltage ?

Yes, it’s a low-voltage (24 VAC) thermostat, compatible with the vast majority of forced air HVAC systems.

Can you program Thermostat +2 or – 2 degrees before unit cycles?

No goes by cycles per hour you program in , This is a smart stat, adjusts itself to maintain that 3 degree swing. Gas or Oil 3-5 times a hour is good, heat pump 5-7 times a hour

can I control the thermostat from my phone?

no. need a wifi stat for that. But is a good thermostat.

Does it work with Alexa ?

This thermostat does not have a wifi connection it will not work with Alexa, phone, or any device. It must be programmed on the thermostat itself by pushing buttons although it is digital. It’s a very nice thermostat and works great.

Why is it blowing cold air when we bring the temperature lower than the room temperature on the heat mode? we expected it to turn off

A couple of possible and easy to address reasons. First, you may have the fan set to “circulate”, which means the thermostat turns the furnace blower on periodically to circulate air throughout the home. If so, set the fan to “auto” on the front of the thermostat. Second possible reason, you may have an separate air circulation system hooked to the furnace fan to circulate and introduce fresh air into the home. This system is common in newer, sealed, homes built in past 15 or so years. If so, check to see what the programmed schedule for this separate device (typically mounted to the exterior of the furnace) is set to operate and adjust if desired.

How wide is this unit?

I had to use touch up paint because the thermostat is smaller than the previous one and I had painted the room after moving in my home.

Is this thermostat dual fuel

If by dual fuel you mean one source for heat and a different source for A/C, then yes. I have gas heat and electric air on two separate units and have this thermostat controlling both units.

can I schedule the thermostat to turn off at 5 am?

2-programs per day or 4-programs per day, or no programs per day adjustable for 5-1-1, or 5-2days, as far as off and on, can not do that just to the lowest, or highest temp.

what is the difference in the t4, t5, or t6 thermostats?

T4 is a basic stat that works on batteries or 24vac, it is no programmable good for milli volt fireplaces, or furnaces. T5 does not have emergency heat for heat pumps, t6 has programming capability select able requires 24 vac from furnace. still has batteries just to maintain setback programs

Is this item returnable?

Absolutely YES. Everything is returnable. — If dealing with a shady company, then you may have to pay the return shipping and file a claim with your credit card company, to have your money refunded, but credit cards are a CONSUMER PROTECTION device, so that’s why we use them 🙂

Is it hard to program

Sometimes annoying. To change one time, cycle or temp program, you have to go through too many program changes. For instance you have to go through separate ac, and heat programs for each step. Temporary or locked permanent temperature changes however are easy.

What is the wifi version of this model?

t6 lyric

What is included in the package of the Honeywell Pro Series Thermostat?

The package includes the thermostat, UWP mounting system, Honeywell standard installation adapter, decorative cover plate, screws and anchors, and 2 AA batteries.

What are the wiring terminal designations provided for?

The wiring terminal designations are provided for conventional systems, heat-only systems, heat-only systems with fan, cool-only systems, and heat pump systems.

What is the default security code for the Honeywell Pro Series thermostat?

The default security code for the Honeywell Pro Series thermostat is 1234.

What is the purpose of the Optional Cover Plate?

The Optional Cover Plate is used when mounting the thermostat to an electrical junction box or when you need to cover paint gap from old thermostat.

How do you install the UWP Mounting System?

Before starting, turn the power off at the breaker box or switch. Position the UWP on the What is the purpose of the Installer system test?wall. Level and mark hole positions. Drill holes at marked positions, and then lightly tap supplied wall anchors into the wall using a hammer. Pull the door open and insert the wires through the wiring hole of the UWP. Place the UWP over the wall anchors. Insert and tighten mounting screws supplied with the UWP. Do not over-tighten. Tighten until the UWP no longer moves. Close the door.

What are the available System modes for the thermostat?

The available System modes for the thermostat are Auto, Heat, Cool, Em Heat, and Off.

What are the available Fan modes for the thermostat?

The available Fan modes for the thermostat are Auto, On, and Circ.

How do you enter the advanced menu for Installer setup (ISU)?

Press and hold the CENTER and + buttons for approximately 3 seconds to enter the advanced menu.

What is the purpose of the Installer system test?

The Installer system test is used to test the heating and cooling systems to ensure they are working properly.

Video

Honeywell Home ProSeries Thermostat Manual: Installation & Programming (24)Honeywell Pro Series Thermostat
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FAQs

Honeywell Home ProSeries Thermostat Manual: Installation & Programming? ›

An experienced DIY-er can install most programmable thermostats and some smart thermostats. Don't forget to turn off the breaker to the HVAC equipment!

How do I reprogram my Honeywell home thermostat? ›

PERFORMING A FACTORY RESET
  1. Press the Menu Icon.
  2. Scroll down to “Thermostat Information.
  3. Record the “Date Code”
  4. Press the “back” arrow, then scroll down to “Installer Options”
  5. Enter the Date Code when prompted to “Enter your password”
  6. Select “Reset”
  7. Select “Factory Reset”
May 12, 2023

Can I install a programmable thermostat myself? ›

An experienced DIY-er can install most programmable thermostats and some smart thermostats. Don't forget to turn off the breaker to the HVAC equipment!

What color wires go where on a Honeywell thermostat? ›

The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).

Why is my Honeywell Pro Series thermostat not working? ›

Troubleshooting a Programmable Honeywell Thermostat

Put in new batteries; Check the circuit breaker; Check the indoor unit to make sure all the panel doors are closed; Make sure the power is connected to the furnace or air conditioning unit by checking the switch near the indoor unit is up.

What does a factory reset do on a Honeywell home thermostat? ›

Resetting your thermostat can solve several issues, including: Problems with your thermostat's programming. Trouble connecting to your furnace or air conditioning unit. Inconsistent or inaccurate temperature readings.

How do I know what Honeywell thermostat I have? ›

The fastest way to see your thermostat model number is to look for it on your thermostat ID card. If you do not have a product ID card, the fastest way to find the model number is by removing the thermostat from the wall-plate.

What is the Honeywell setup code? ›

The default Installer Code for all Honeywell/Ademco alarm panels (hardwired and wireless) is 4112. You can always try the default Installer Code first but it would be unusual for a security dealer to not change the code as part of their installation procedure.

What is the Honeywell install code? ›

The default installer code is 4112. While you should always change the master code, it's usually a good idea to leave the installer code as it is. User codes: User codes allow people to arm and disarm the alarm but don't provide access to the system or allow users to edit the alarm's functions.

What is the universal code for Honeywell thermostat? ›

Most Honeywell thermostats come with a default passcode of 1234.

How do I find my Honeywell master code? ›

In order to program the Honeywell Lyric, you must know the current Installer Code. Note: The default Installer Code for most Honeywell Systems is 4112, while the default Master Code is usually 1234.

What is the default IP and password for Honeywell? ›

If logging on the camera remotely from a PC, install the Honeywell Config Tool from the software and documentation CD, find the camera on the network, and then open the web browser with the Honeywell Config Tool. The default user name is admin (case-sensitive) and the default password is 1234.

What happens if you wire a thermostat wrong? ›

Potential consequences of improper installation could include: Electric shock. Blowing a circuit breaker. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself.

Do I need an electrician to install a programmable thermostat? ›

Your best option is to have a C-wire properly installed and run to your new thermostat, which means it will require an electrician's expertise. Even if you find a DIY article or video online, the risk to your health or home isn't worth it when dealing electrical wiring.

Do I need a professional to install a thermostat? ›

Most programmable thermostats and certain smart thermostats can be installed by an experienced do-it-yourselfer. But if you don't have any experience in installing or replacing a thermostat, we suggest you contact a certified HVAC professional as it may cost you more if the installation is not successful.

How many wires go to a Honeywell thermostat? ›

The most common configuration is five wires.

What color is the C wire? ›

Blue Or C Wire

The blue wire—also called the C, or “common,” wire—is required to power any thermostat and ensure proper system function. Your HVAC system and thermostat configuration will determine what color the C wire will be. The C wire in homes with a heat pump is always blue.

What is the common wire on a Honeywell thermostat? ›

Known as the common wire, (C-Wire) provides WiFi thermostats continuous power from heating (e.g. furnaces) and cooling systems (e.g. Air Conditioning systems). C-Wires are required on all Resideo WiFi thermostats.

How do I reset my thermostat thermostat? ›

If your thermostat has a recessed reset button, press it with a paperclip for 5 seconds and then release. If you have a battery-operated thermostat and reset mode didn't help, try taking out the batteries for 5 seconds and then putting them back in.

Do you have to program a programmable thermostat? ›

Some smart thermostats, such as the Google Nest Learning Thermostat, can “learn” your habits and create a schedule after you've entered a few days' worth of temperature settings manually. But most smart thermostats still require you to enter a schedule and corresponding temperatures.

Why is my Honeywell thermostat not communicating? ›

Try the following: Make sure your app is up to date and your mobile phone is within 3-5 feet of your thermostat. Restart your mobile device and turn off any apps that may enhance the security, including VPN's, GPS spoofers, etc. These can be turned on again once the connection of the thermostat is complete.

What to do if thermostat is not communicating? ›

4 Steps for Troubleshooting Your Thermostat
  1. Reset the Thermostat. Like any other electronic device, sometimes a digital thermostat needs a reset to get it working properly again. ...
  2. Clean Out Dust and Corrosion. ...
  3. Test the Power and Wiring. ...
  4. Adjust the Heat Anticipator.
Mar 18, 2020

What is permanent hold on thermostat? ›

The temporary hold setting is when you change the temperature setting to a different temperature and it stays at that setting until the next schedule change. The permanent hold setting holds the temperature setting you have chosen for an indefinite time. This overrides your scheduled settings.

What does hold mean on thermostat? ›

By pressing “Hold”, your thermostat will lock in the temperature it's currently at until you change it again. When you are ready for your normal schedule to resume, simply press the “Run” button and return to your typical programming. Convenient, right? Programmable thermostats are a great technological innovation.

What happens if I push the reset button on my thermostat? ›

It will turn the thermostat off, and in most cases, it will restore the thermostat to factory settings. If you're experiencing problems with your HVAC system, you should try using the reset button. If that doesn't work, you can always contact an HVAC technician for assistance.

How do I know if I need to reset my thermostat? ›

If you've been cranking the thermostat up and down, but failing to achieve a comfortable temperature, you may need to reset the thermostat for your heating and cooling system.

How do I bypass the program on my Honeywell thermostat? ›

To permanently ignore the schedule, press up or down until the desired temperature is displayed. Then, press the Hold button to maintain the new temperature indefinitely. The word Hold will appear on the screen. Press the Run button if you wish to cancel either override and resume the schedule.

How do I reset my Honeywell thermostat effortlessly in seconds? ›

3. Honeywell – 6000WF Series Thermostats
  1. Press the up and fan button simultaneously. Continue pressing them together.
  2. In the meantime, change the right number to 1 and that of the left to 90.
  3. Now, press “Done”. You will have a reset machine.
Dec 29, 2021

Can I replace my Honeywell thermostat with any model? ›

You can certainly replace/upgrade your old Honeywell, as I did. Simplicity of instalation will depend on the wiring of your old thermostat and how handy you are.

What is S1 and S2 on Honeywell thermostat? ›

S, S1, or S2. S terminals are for outdoor temperature sensors. ecobee thermostats obtain weather data over Wi-Fi so S wires aren't necessary. L. The L wire can be used to power indicator lights on older thermostats.

How do I turn off the schedule on my thermostat? ›

Schedule Settings On the Thermostat
  1. Press Menu on your thermostat.
  2. Select Schedules & Presets.
  3. Tap the On/Off toggle at the bottom of the screen to enable or disable schedule settings. You can tap it again to revert. NOTE: The thermostat may take several seconds to apply the change. ...
  4. Press Home to exit.
Aug 4, 2022

How do you program a thermostat schedule? ›

Here, we walk you through the programming process.
  1. Step 1: Know Your Schedule. First, check to see what cadence your thermostat can accommodate: daily, weekly, or weekday/weekend scheduling. ...
  2. Step 2: Choose Temperature Settings. ...
  3. Step 3: Build the Schedule in the Thermostat. ...
  4. Step 4: Enable the Schedule.
Jun 6, 2022

How do you set an old Honeywell programmable thermostat? ›

How To Set an Old Honeywell Thermostat
  1. Press the Set button and the time will flash on the screen.
  2. Press the up/down buttons to choose the correct time.
  3. Press the Run button to save changes and exit.
Jan 4, 2023

What settings should my thermostat be on? ›

What temperature should you keep your house at? Or better yet, “What is the most energy saving temperature to set my thermostat at?” According to ENERGYSTAR.gov, the ideal home temperature should be between 70 to 78 degrees Fahrenheit.

Should thermostat be on all the time? ›

According to experts at the Energy Saving Trust, the idea it's cheaper to leave the heating on low all day is a myth. They're clear that having the heating on only when you need it is, in the long run, the best way to save energy, and therefore money.

How do I set permanent hold on Honeywell Pro Series? ›

Press + or - to adjust the temperature. TEMPORARY HOLD is displayed and the setpoint temperature flashes. While it's flashing, press Hold (Mode) button to change to Permanent Hold.

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