Honeywell Home RET97E5D Wi-Fi Programmable Thermostat User Guide

Honeywell Home RET97E5D Wi-Fi Programmable Thermostat 

In the box you will find

• Thermostat
• Wallplate (attached to thermostat)
• Screws and anchors
• Quick Start Guide
• Thermostat ID Card
• Wire labels
• User Guide
• Quick Reference Card

Welcome
Congratulations on your purchase of a smart programmable thermostat. When registered to Total Connect Comfort Solutions, you can remotely monitor and control the heating and cooling system
in your home or business—you can stay connected to your comfort system wherever you go.
Total Connect Comfort is the perfect solution if you travel frequently, own a vacation home, a business or manage an Investment property or if you are simply looking for peace of mind.

• This thermostat works with common 24 volt systems such as forced air, hydronic, heat pump, oil, gas, and electric. It will not work with millivolt systems, such as a gas fireplace, or with 120/240 volt systems such as baseboard electric heat.
• MERCURY NOTICE: Do not place your old thermostat in the trash if it contains mercury in a sealed tube. Contact the Thermostat Recycling Corporation at www.thermostat-recycle.org or 1-800-238-8192 for information on how and where to properly and safely dispose of your old thermostat.
• NOTICE: To avoid possible compressor damage, do not run air conditioner if the outside temperature drops below 50°F (10°C).

Need help?
Visit honeywellhome.com/wifi-thermostat or call 1-855-733-5465 for assistance before returning the thermostat to the store.

Features of your Wi-Fi thermostat

With your new thermostat, you can:

• Connect to the Internet to monitor and control your heating/cooling system
• View and change your heating/cooling system settings
• View and set temperature and schedules
• Receive alerts via email and get automatic upgrades

Your new thermostat provides:

• Smart Response Technology
• Compressor protection
• Heat/cool auto changeover

Controls and home screen quick reference
Once your Wi-Fi thermostat is installed, it will display the home screen. Portions of this display will change depending on how you are viewing it.

The screen lights when you press any button. It stays lit for 8 seconds after you complete changes.

Preset energy-saving schedules

This thermostat is pre-set with energy-saving program settings for four time periods. Using the default settings can reduce your heating/cooling expenses. Savings may vary depending on geographic region and usage. To change the settings, see pages 39–41.

	Default Heat Settings	Default Cool Settings
WAKE 6:00 am	70 °	78 °
LEAVE 8:00 am	62 °	85 °
RETURN 6:00 pm	70 °	78 °
SLEEP 10:00 pm	62 °	82 °

Setting up your thermostat

Setting up your Wi-Fi programmable thermostat is easy. It is preprogrammed and ready to go as soon as it is installed and registered.

1. Install your thermostat.
2. Connect your home Wi-Fi network.
3. Register online for remote access.

Before you begin, you may want to watch a brief installation video. Use the QR Code® at the front of this guide, or go to honeywellhome.com/support

Installing your thermostat

You might need the following tools to install this thermostat:

• No. 2 Phillips screwdriver
• Small pocket screwdriver
• Pencil
• Level (optional)
• Drill and bits (3/16” for drywall, 7/32” for plaster) (optional)
• Hammer (optional)
• Electrical tape (optional)

Switch OFF power to your heating/cooling system

Important! To protect your equipment, switch OFF the power to your heating/cooling system at the breaker box or the system switch.

Remove old thermostat faceplate and leave wires connected

• Take a picture of the wire connections for later reference.
• If no wire is connected to a terminal labeled C or no C terminal exists on the old thermostat, view the Alternate Wiring videos at honeywellhome.com/wifi-thermostat

Important! C wire is required and is the primary power source for your thermostat. Without a C wire, your thermostat will not power up. If you have an older thermostat with a sealed mercury tube, turn to page 2 for proper disposal instructions.

Installing your thermostat

Label wires.

• Do not label by wire color. Use the supplied sticky tags to label each wire as you disconnect it.
• Label wires according to the old thermostat terminal designations, not by wire color.
  Note: If no tag matches a wire terminal label, write the terminal label on a blank tag.

Remove wallplate
Remove the old wallplate from the wall after all wires have been labeled and disconnected.

Separate Wi-Fi thermostat and its wallplate
On your new thermostat, grasp the finger holds on the top and bottom of the wallplate with one hand and the thermostat (front) with the other hand. Pull pieces apart.

Mount wallplate for Wi-Fi thermostat 
Mount your new wallplate using screws and anchors included with the thermostat.

If necessary:

• Drill 3/16-in holes for drywall.
• Drill 7/32-in holes for plaster.
  Note: You may be able to use your existing wall anchors. Hold the wallplate up to the existing anchors to check for alignment.

Important! The Wi-Fi thermostat requires a C wire to operate. The C, or common, wire brings 24 VAC power to the thermostat. Many older mechanical or battery operated thermostats do not require a C wire. If you don’t have a C wire, try:

• Looking for an unused wire that is pushed into the wall. Connect that wire to C and check that it is connected to the 24 VAC common at your heating/cooling system.
  Note: Not all heating/cooling systems label the 24 VAC common C. Check your system manual or contact the manufacturer to find out which terminal is the 24 VAC common.
  View the Alternate Wiring videos at honeywellhome.com/wifi-thermostat

Wiring

For conventional heating/cooling systems (natural gas, oil or electric furnace, air conditioner), see page 14. See “Glossary” on page 64 for further definition.
For a heat pump system, see page 15. See “Glossary” on page 64 for further

Wiring (conventional system)
Wire the Wi-Fi thermostat to your conventional system.

• Starting with the C Wire, match the sticky tag on the wire to the terminal labels. You must have a C wire. See page 13.
• Loosen screw, insert wire on inside edge of terminal, then tighten screw.
• Verify wire is firmly secured by gently pulling on wire.
• Repeat steps a–c for all other wires.
• Push any excess wire back into the wall opening after all wires are installed.
• Continue to page 20.
  Labels don’t match? See alternate wiring key on pages 16–17.

Note: The wiring for your application might be different from the wiring shown above.

Wiring (heat pump system only)
Wire Wi-Fi thermostat to your heat pump.

• Starting with the C Wire, match the sticky tag on the wire to the terminal labels.
  You must have a C wire. See page 13.
• Loosen screw, insert wire on inside edge of terminal, then tighten screw.
• Verify wire is firmly secured by gently pulling on wire.
• Repeat steps a–c for all other wires.
• Push any excess wire back into the wall opening after all wires are installed.
• Continue to page 20.
  Note: If old thermostat has separate wires on AUX and E, place both wires into the E/AUX terminal.
  If old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. No jumper is required.
  Labels don’t match? See alternate wiring key on pages 18–19.

Note: The wiring for your application might be different from the wiring shown above.

Alternate wiring (conventional system)
Use this if your wire labels don’t match the terminal labels.
Note: You must have a C wire or equivalent. See page 13.

Alternate wiring key (conventional system)

1. Do not use K terminal. For future use.
2. If your old thermostat had both R and RH wires, remove metal jumper. Connect the R wire to the RC terminal, and the RH wire to the R terminal.
3. Remove metal jumper connecting R and RC only if you must connect both R and RC.

Alternate wiring (heat pump system only)
Use this if your wire labels don’t match the terminal labels.
Note: You must have a C wire or equivalent. See page 13.

1. Do not use K terminal. For future use.
2. If old thermostat has separate wires on AUX and E, place both wires into the E/AUX terminal. If old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. No jumper is required.
3. If your old thermostat had an O wire and not a B wire, attach the O wire to the O/B terminal.
4. If your old thermostat had separate O and B wires, attach the B wire to the C terminal. If another wire is attached to the C terminal, check honeywellhome.com/wifi-thermostat for help. Attach the O wire to the O/B terminal.
5. If your old thermostat had separate Y1, W1 and W2 wires, check honeywellhome.com/wifi- thermostat for help.
6. If your old thermostat had both V and VR wires, check honeywellhome.com/wifi-thermostat for help.
7. Leave metal jumper between R and RC terminals in place.
8. Insert quick reference card. Fold quick reference card along score lines, and slide it into the slot on the back of the thermostat.
9. Attach thermostat to wallplate. Align the thermostat to the wallplate and then snap into place.
10. Switch heating/cooling system ON.
    Important!
    • Verify that the C wire is connected at the thermostat and at the heating/cooling system.
    • Make sure the heating/ cooling system door is firmly secured.
    • Switch power back ON for your heating/cooling system at the breaker box or its power switch.
11. Set clock to current day and time.
    • Press to set clock.
    • Press Set Day.
    • Pressto select the day of week.
    • Press Done to save.
      (Press and hold a st button to quickly change a setting.)
12. Determine your heating/cooling system type.
    Important! Heating/cooling system type must be set so that your thermostat operates properly and does not damage your system.
    • If your system type is conventional single stage (natural gas-powered single stage with a/c), continue to “Connecting to your Wi-Fi network” on page 26.
    • If your system is:
      Conventional multistage heat and cool
      Any type of heat pump
      Hydronic
      Other
      You MUST change the system type by setting system function 1. See page 48 to match your thermostat to your system type.
      If you are not sure of your heating/cooling system type or have other questions, go to honeywellhome.com/support Congratulations! Your thermostat is operational.
13. Test your thermostat
    • Press the System button to change to heating or cooling and begin operation.
    • For remote access to your thermostat, continue to “Connecting to your Wi-Fi network” on page 26.

Connecting to your Wi-Fi network

To complete this process, you must have a wireless device connected to your home wireless network. Any of these device types will work:

• Tablet (recommended)
• Laptop (recommended)
• Smartphone

If you get stuck… at any point in this procedure, restart the thermostat by removing the thermostat from the wallplate, wait for 10 seconds, and snap it back onto the wallplate. Go to Step 1 in this procedure, starting on page 27.
View the Wi-Fi Enrollment video at honeywellhome.com/wifi-thermostat

1. Connect to your thermostat.
   • Make sure the thermostat displays Wi-Fi Setup.
   • On the wireless device (laptop, tablet, smartphone), view the list of available Wi-Fi networks.
   • Connect to the network called NewThermostat_123456 (the number will vary).
     Note: If you are asked to specify a home, public, or office network, select Home Network.
2. Join your home network.
   • Open your web browser to access the Thermostat Wi-Fi Setup page. The browser should automatically direct you to the correct page; if it does not, go to http://192.168.1.1
   • Find the name of your home network on this page and select it.
     Note: Some routers have enhanced features such as guest networks; use your home network.
   • Complete the instructions for joining your Wi-Fi network and click on the Connect button. (Depending on your network setup, you may see an instruction such as Enter Password for your home network.)
     Note: If you did not correctly connect to the thermostat, you may see your home router page. If so, return to Step 1.
   • Note: If your Wi-Fi network does not appear in the list on the Thermostat Wi-Fi Setup page:
   • Try performing a network rescan by pressing the Rescan button. This is helpful in areas with a lot of networks.
   • If you are connecting to a hidden network, then enter the network SSID in the textbox, select the encryption type from the drop down menu, and click on the Add button. This manually adds the network to the top of the list. Click on the new network in the list and enter the password if necessary. Click on Connect to join the network.
3. Make sure your thermostat is connected. While the connection is in process, your thermostat will flash Wait for up to 3 minutes. When the connection is complete, the display will show Wi-Fi Setup Connection Success. The Wi-Fi signal strength will appear in the top-right corner. After about 60 seconds, the home screen will appear and Register at Total Connect will flash until registration is complete.
   If you don’t see these messages, see page 26. To register online for remote access to your thermostat continue on page 31.
   Note: If the thermostat displays Connection Failure or continues to display Wi-Fi Setup, confirm you correctly entered your home network password in step 2. If correct, refer to the FAQ at honeywellhome.com/support

Registering your thermostat online

To view and set your Wi-Fi thermostat remotely, you must have a Total Connect Comfort account. Use the following steps.

1. Open the Total Connect Comfort web site.
   Go to mytotalconnectcomfort.com
   View the Wi-Fi Thermostat Registration video at honeywellhome.com/wifi-thermostat
2. Login or create an account.
   If you have an account, click Login – or –click Create An Account.
   • Follow the instructions on the screen.
   • Check your email for an activation message from My Total Connect Comfort. This may take several minutes.
     Note: If you do not receive a response, check your junk mailbox or use an alternate e-mail address.
   • Follow activation instructions in the email.
   • Log in.
3. Register your Wi-Fi thermostat.
   After you are logged in to your Total Connect Comfort account, register your thermostat.
   • Follow the instructions on the screen. After adding your thermostat location, you must enter the thermostat’s unique identifiers:
     MAC ID
     MAC CRC
     Note: These IDs are listed on the Thermostat ID Card included in the thermostat package. The IDs are not case sensitive.
   • When the thermostat is successfully registered, the Total Connect Comfort registration screen will display a SUCCESS message. In the thermostat display, you will see Setup Complete for about 90 seconds.
   • Also notice that your thermostat displays its signal strength.
     Congratulations! You’re done.
     You can now control your thermostat from anywhere through your tablet, laptop, or smartphoneTotal Connect Comfort free app is available for Apple® iPhone®, iPad® and iPod touch® devices at iTunes® or at Google Play® for all Android™ devices.

Setting the time and day

1. Press Set Clock/Day/Schedule, then press s or t to set clock.
2. Press Set Day, then press s or t to select the day of week.
3. Press Done to save.
   Note: If the Set Clock/Day/Schedule option is not displayed, press Done.
   Note: If the display flashes Set Clock, the thermostat will follow your settings for the Monday “Wake” time period until you reset the time and day.

Setting the fan

Press Fan to select On or Auto (toggle to re-select).

• Auto: Fan runs only when the heating or cooling system is on. Auto is the most commonly used setting.
• On: Fan is always on.
  Note: Options may vary depending on your heating/cooling equipment.

Selecting system mode

Press System to select:

• Heat: Controls only the heating system.
• Cool: Controls only the cooling system.
• Off: Heating/cooling systems are off.
• Auto: Selects heating or cooling depending on the indoor temperature.
• Em Heat (heat pumps with aux. heat): Controls auxiliary/emergency heat. Compressor is off.
  Note: Depending on how your thermostat was installed, you may not see all system settings.

Adjusting program schedules

1. Press Set Clock/Day/Schedule, then Set Schedule.
2. Press s or t to set your Monday (Mon) Wake time, then press Next.
3. Press s or t to set the temperature for this period, then press Next.
4. Set time and temperature for the next time period (Leave). Repeat Steps 2 and 3 for each time period.
5. Press Next to set time periods for the next day. Repeat Steps 2 through 4 for each day.
6. Press Done to save and exit.
   Note: Make sure the thermostat is set to the system mode you want to program (Heat or Cool).

Overriding schedules temporarily

Press to immediately adjust the temperature.
The new temperature will be maintained only until the next programmed time period begins.
To cancel the temporary setting at any time, press Cancel. The program schedule will resume.

Overriding schedules permanently

1. Press HOLD to permanently adjust the temperature. This will turn off the program schedule.
2. Press to adjust the temperature setting. The temperature you set will be maintained 24 hours a day until you manually change it or press Cancel to resume the program schedule

Unregistering thermostat

If you remove the thermostat from your Total Connect Comfort website account (for example, you’re moving and leaving the thermostat behind), the thermostat will display Register at Total Connect until it is re-registered.

Disconnecting Wi-Fi

Replacing your router
If you disconnect the thermostat from your Wi-Fi network:

1. Enter system setup (see page 48).
2. Change setting 39 to 0 (see page 54).
   The screen will display Wi-Fi Setup. Re-connect to a Wi-Fi network by following the steps on page 26.

Turning Wi-Fi off
If you do not plan to control the thermostat remotely, you can remove the Wi-Fi Setup message from the screen:

1. Enter system setup (see page 48).
2. Change setting 38 to 0 (see page 54). Wi-Fi Setup will be removed from screen. If you want to connect to the Wi-Fi network later, change setting 38 back to 1.

Software updates

Resideo periodically issues updates to the software for this thermostat. The updates occur automatically through your Wi-Fi connection. All your settings are saved, so you will not need to make any changes after the update occurs.
While the update is taking place, your thermostat screen flashes Updating and shows the percentage of the update that has occurred. When the update is complete, your home screen will appear as usual.
Note: If you are not connected to Wi-Fi, you will not get automatic updates.

Smart Response Technology
This feature allows the thermostat to “learn” how long the heating/cooling system takes to reach programmed temperature settings, so the temperature is reached at the time you set.

For example: Set the Wake time to 6:00 am, and the temperature to 70°. The heat will come on before 6:00 am, so the temperature is 70° by 6:00 am.
Note: System setting function 13 controls Smart Response Technology. See “Smart Response Technology” on page 52.

Compressor protection
This feature forces the compressor to wait a few minutes before restarting, to prevent equipment damage

Auto ChangeOver

This feature is used in climates where both air conditioning and heating are used on the same day. When the system is set to Auto, the thermostat automatically selects heating or cooling depending on the indoor temperature.
Heat and cool settings must be at least 3 degrees apart. The thermostat will automatically adjust settings to maintain this 3-degree separation.
Note: System setting function 12 controls Auto changeover. See “Manual/Auto Changeover” on page 51.

Settings function and options

You can change options for a number of system functions. Available functions depend on the type of system you have. The functions, along with available options, are described on pages 50–54.
This thermostat is pre-set for a single-stage heating/cooling system. Setting function 1 for a heat pump will adjust the default settings.

1. Press Fan and simultaneously and hold for approximately 3 seconds. The screen will change to display two numbers and the button designations will be Done, Back, blank, Next.
2. Press Next until you see the function number—the larger number on the left— you want to set.
3. Change options for any function by pressing until the correct option (smaller number on right) is displayed.
4. Repeat Steps 2 and 3 until you have set all functions that you wish to change.
5. When you have made all changes, press Done to save and exit.

System setup

(See page 48 for instructions.)

Function                         Settings & Options

Select System Type: If you are not sure of your heating/ cooling system type or have other questions, go to honeywellhome. com/wifi- thermostat

• Heat/cool: Gas, oil or electric heating with central air
• Heat pump: Heat pump without backup or auxiliary
• Heat only: Gas, oil or hot water heat without central air
• Heat only with fan: Gas, oil or electric heat without central air
• Cool only: Central air conditioning
• Heat pump: Heat pump with backup or auxiliary
• Heat/Cool Multiple stages: 2 heat stages (wires on W and W2), 2 cooling stages (wires on Y and Y2).
• Heat/Cool Multiple stages: 2 heat stages (wires on W and W2), 1 cooling stage (wire on Y).
• Heat/Cool Multiple stages: 1 heat stage (wires on W), 2 cooling stages (wire on Y and Y2).

2        Heat Pump Changeover Valve (for heat pumps only)

0      Cooling changeover valve: Use this setting if you connected a wire labeled “O” to the O/B terminal. 1      Heating changeover valve: Use this setting if you connected a wire labeled “B” to the O/B terminal.

3 Heating Fan Control

• Gas or oil heat: Use this setting if you have a gas or oil heating system (system controls fan operation).
• Electric heat: Use this setting if you have an electric heating system (thermostat controls fan operation).

5   6	Heating Cycle Rate Heating Cycle Rate Stage 2	5 9 3 1	Gas or oil furnace: Standard gas/oil furnace (less than 90% efficiency). Electric furnace: Electric heating systems. Hot water or high-efficiency furnace: Hot water system or gas furnace (more than 90% efficiency). Gas/oil steam or gravity system: Steam or gravity heat systems.
12	Manual/Auto Changeover	0 1	Manual changeover (Heat/Cool/Off). Automatic changeover (Heat/Cool/Auto/Off). Automatically turns on Heat or Cool based on room temperature. Note: System maintains minimum 3°F difference between heat and cool settings.
	See page 47 for more information.

13  Smart Response Technology: See page 45 for more information.

• 1  On
• 0  Off

14	Temperature Format (°F/°C)	0 1	Fahrenheit Celsius
16	Schedule Options	1	Program schedule is on (7-day programmable).
		0	Program schedule is off. Thermostat can not be programmed.

36	Device Name	52 = Thermostat 1 Basement 2 Bathroom 3 Bathroom 1 4 Bathroom 2 5 Bathroom 3 6 Bedroom 7 Bedroom 1 8 Bedroom 2 9 Bedroom 3 10 Bedroom 4 11 Boat House 12 Bonus Room 13 Computer Room 14 Den 15 Dining Room	16 Exercise Room 17 Family Room 18 Fireplace 19 Foyer 20 Game Room 21 Garage 22 Great Room 23 Guest Room 24 Gym 25 Kid’s Room 26 Kitchen 27 Kitchen 1 28 Kitchen 2 29 Laundry Room	30 Library 31 Living Room 32 Lower Level 33 Master Bath 34 Master Bed 35 Media Room 36 Music Room 37 Nursery 38 Office 39 Office 1 40 Office 2 41 Pantry 42 Play Room 43 Pool Room	44 Porch 45 Rec Room 46 Sewing Room 47 Spa 48 Storage Room 49 Studio 50 Sun Room 51 Theater 52 Thermostat 53 Upper Level 54 Utility Room 55 Walk In Closet 56 Wine Cellar 57 Workshop
This name will
identify the
thermostat when
you view it remotely.
If you register
multiple
thermostats, give
each one a different
name.

38  Wi-Fi On/Off          

• Wi-Fi is on and can be connected to a Wi-Fi network.
• 0 Wi-Fi is off. Thermostat cannot be connected to a Wi-Fi network. If you are not connecting the thermostat to a Wi-Fi network this will remove the text Wi-Fi Setup from the messaging center.

39	Wi-Fi Connection	1	Connected to Wi-Fi network. This is set automatically when the thermostat is connected to the Wi-Fi network.
		0	Set to 0 to disconnect from the Wi-Fi network.
42	Show period and day of week	0 1	Period and day are not shown on the home screen. Period and day are shown on the home screen.
85	Restore Schedule Defaults	0 1	Continue using programmed schedule. Restore thermostat program to energy saving settings
90	Restore Original Settings	0 1	No Disconnects thermostat from Wi-Fi and restores original settings (erases customizations).

Frequently asked questions

• Q: Will my thermostat still work if I lose my Wi-Fi connection?
  A: Yes, the thermostat will operate your heating and/or cooling system with or without Wi-Fi.
• Q: How do I find the password to my router?
  A: Contact the manufacturer of the router or check the router documentation.
• Q: Why am I not seeing my Wi-Fi setup page?
  A: You are probably connected only to your router, not to your thermostat. Try connecting to the thermostat again.
• Q: Why isn’t my thermostat connecting to my Wi-Fi router even though it is very close to the thermostat?
  A: Verify that the password entered for the Wi-Fi router is correct.
• Q: Where can I find my MAC ID and MAC CRC codes?
  A: The MAC ID and MAC CRC numbers are included on a card packed with the thermostat or on the back of the thermostat (visible when removed from wallplate). Each thermostat has a unique MAC ID and MAC CRC.
• Q: My thermostat is unable to register to the Total Connect Comfort website.
  A: Verify that the thermostat is correctly enrolled on your home Wi-Fi network. The message center will display Wi-Fi Setup or Register at Total Connect. You might also see the Wi-Fi Signal strength icon. Verify that the Wi-Fi router has a good internet connection. On your computer, verify that
  you can open the site at mytotalconnectcomfort.com
  If you cannot open the site, switch off the internet modem for a few seconds, then power it back on.
• Q: I registered on the Total Connect Comfort website but was unable to login using my new account.
  A: Check your email and ensure that you received an activation email. Follow the instructions to activate your account and then login to the website.
• Q: I have signed up on the Total Connect Comfort website and have not received a confirmation email.
  A: Check for the email in your Junk or Deleted folder.
• Q: Is there a way to extend the signal strength?
  A: Most standard routers can be set up to be a repeater. You can also purchase and install a Wi-Fi repeater.
  For more FAQs, see honeywellhome.com/support

Lost Signal

If the no-Wi-Fi indicator displays in place of the Wi-Fi strength indicator in the upper right hand corner of the home screen:

• Check another device to be sure Wi-Fi is working in your home; if not, call your Internet Service Provider.
• Move the router.
• Restart the thermostat: remove it from the wallplate, wait 10 seconds, and snap it back onto the wallplate. Return to Step 1 of Connecting to your Wi-Fi network.

Trouble Shooting

Error Codes
For certain problems, the thermostat screen will display a code that identifies the trouble. Initially, error codes are displayed alone in the time area of the screen; after a few minutes, the home screen is displayed and the code alternates with the time.

If you have difficulty with your thermostat, please try the following suggestions. Most problems can be corrected quickly and easily.

Display is blank

• Check circuit breaker and reset if necessary.
• Make sure power switch at heating and cooling system is on.
• Make sure furnace door is closed securely.
• Make sure C wire is connected (see page 13).

Cannot change system setting to Cool

• Check Function 1: System Type to make sure it is set to match your heating and cooling equipment (see page 50). Fan does not turn on when heat is required
• Check Function 3: Heating Fan Control to make sure it is set to match your heating equipment (see page 51).

Cool On or Heat On is flashing on the screen

• Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor.

Heat pump issues cool air in heat mode, or warm air in cool mode

• Check Function 2: Heat Pump Changeover Valve to make sure it is properly configured for your system (see page 50).

Heating or cooling system does not respond

• Press System to set system to Heat. Make sure the temperature is set higher than the Inside temperature.
• Press System to set system to Cool. Make sure the temperature is set lower than the Inside temperature.
• Check circuit breaker and reset if necessary.
• Make sure power switch at heating & cooling system is on.
• Make sure furnace door is closed securely.
• Wait 5 minutes for the system to respond.

Heating system is running in cool mode

• Check Function 1: System Type to make sure it is set to match your heating and cooling equipment (see page 50).

Heating and cooling equipment are running at the same time

• Check Function 1: System Type to make sure it is set to match your heating and cooling equipment (see page 50).
• Grasp and pull thermostat away from wallplate. Check to make sure bare wires are not touching each other.
• Check thermostat wiring is correct.

Glossary

C wire
The “C” or common wire brings 24 VAC power to the thermostat from the heating/cooling system. Some older mechanical or battery operated thermostats may not have this wire connection. It is necessary for establishing a Wi-Fi connection to your home network.

Heat Pump heating/cooling system
Heat pumps are used to heat and cool a home. If your old thermostat has a setting for auxiliary or emergency heat, you likely have a heat pump.

Conventional heating/cooling system
Non–heat pump type systems; these include air handlers, furnaces or boilers that run on natural gas, oil or electricity. They may or may not include an air conditioner.

Jumper
A small piece of wire that connects two terminals together.

MAC ID, MAC CRC
Alphanumeric codes that uniquely identify your thermostat.

QR Code®
Quick response code. A two-dimensional,machine-readable image. Your wireless device can read the black and white pattern in the square and link its browser directly to a web site. QR Code is a registered trademark of DENSO WAVE INCORPORATED.

Regulatory information

FCC Compliance Statement (Part 15.19) (USA only)
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

FCC Warning (Part 15.21) (USA only)
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

FCC Interference Statement (Part 15.105 (b)) (USA only)
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Thermostats
To comply with FCC and Industry Canada RF exposure limits for general population/ uncontrolled exposure, the antenna(s) used for these transmitters must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

Section 7.1.2 of RSS-GEN
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

Section 7.1.3 of RSS-GEN
Operation is subject to the following two conditions:

1. this device may not cause interference, and
2. this device must accept any interference, including interference that may cause undesired operation of the device.

1-year limited warranty

Resideo warrants this product, excluding battery, to be free from defects in workmanship or materials, under normal use and service, for a period of one (1) years from the date of first purchase by the original purchaser. If at any time during the warranty period the product is determined to be defective due to workmanship or materials, Resideo shall repair or replace it (at Resideo’s option).
If the product is defective,

1. return it, with a bill of sale or other dated proof of purchase, to the place from which you purchased it; or
2. call Resideo Customer Care at 1-800-633-3991. Customer Care will make the determination whether the product should be returned to the following address: Resideo Return Goods, 1985 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement product can be sent to you.

This warranty does not cover removal or reinstallation costs. This warranty shall not apply if it is shown by Resideo that the defect was caused by damage which occurred while the product was in the possession of a consumer.
Resideo’s sole responsibility shall be to repair or replace the product within the terms stated above. RESIDEO SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY RESIDEO MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state. If you have any questions concerning this warranty, please write Resideo Customer Care, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-800-633-3991.

Resideo Inc., 1985 Douglas Drive North,
Golden Valley, MN 55422
www.resideo.com
69-2803ES—05 M.S. Rev. 03-19 | Printed in United States
Apple, iPhone, iPad, iPod touch and iTunes are trademarks of Apple Inc. All other trademarks are the property of their respective owners. ©2019 Resideo Technologies, Inc. This product is manufactured by Resideo Technologies, Inc., Golden Valley, MN, 1-800-633- 3991 The Honeywell Home trademark is used under license from Honeywell International Inc. All rights reserved.

Honeywell Home RET97E5D Wi-Fi Programmable Thermostat User Guide

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