Honeywell RTH9590 Wi-Fi Color Touchscreen Programmable Thermostat User Guide

: June 9, 2024
: Honeywell

Honeywell RTH9590 Wi-Fi Color Touchscreen Programmable Thermostat User Guide

Welcome

Getting set up and ready is simple.

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

Before you begin

View the installation video at wifithermostat.com/support

You will need your camera to take a picture of your old wire connections.

You will also need:

Small screw driver
Pen
Thermostat ID card
Your home Wi-Fi network password

Install your thermostat

Switch OFF power to your heating/cooling system

1.1a Important! To protect your equipment, switch OFF the power to your heating/ cooling system at the breaker box or the system switch.
1.1b Confirm power is OFF. Try to turn on heating/ cooling equipment by changing temperature on your old thermostat. Your power is OFF if your system does not turn ON

Circuit breaker box
Heating/cooling system power switch

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.

Remove old thermostat faceplate and leave wires connected

1.2a Take a picture of the wire connections for later reference.

1.2b 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 wifithermostat.com/videos

Important! C wire is required and is the power source for your thermostat. Without a C wire, your thermostat will not power up.

Note: You will need a picture of your wire connections to wire the new thermostat.
Remove

If you have an older thermostat with a sealed mercury tube, see warning page for proper disposal instructions.

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 old thermostat terminal designations, not by wire color.

Note: If no tag matches a terminal designation, write the appropriate letter on a blank sticky tag.

Note: Wrap the wires around a pencil to prevent them from falling back into the wall.

Remove wall plate

Remove the old wall plate from the wall after all wires are labeled and disconnected.
Remove wall plate

Mount wall plate for Wi-Fi thermostat

Mount your new wall plate 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 wall plate up to the existing anchors to check for alignment.
Mount wallplate

Connect wires

Important! C wire is required and is the power source. Without a C wire, your thermostat will not power up.

View the Alternate Wiring videos at wifithermostat.com/videos

1.6a Starting with the C Wire, match the sticky tag on the wire to the terminal labels.
1.6b Straighten wire and gently slide into terminal hole until it clicks into place. (If you need to remove a wire, use a pen tip to press the terminal release and then pull the wire out.)

Note: Refer to the wiring picture you took in Step 1.2.
Tip: To make it easier to slide the wire into place, use a pen tip to hold down the terminal release

Note: The wiring for your application might be different than the wiring shown below.
Connect wires

Labels don’t match or have heat pump system? See User Guide.

1.6c In the image on the right, check the box next to each connection. You will use this checklist in Step 1.9.
1.6d Verify wire is firmly secured by gently pulling on wire.
1.6e Repeat steps a–d for all other wires.
1.6f Push any excess wire back into the wall opening after all wires are installed.

Note: The L terminal on the lower right is used only for Heat Pump systems.
Note: If the old thermostat for Heat Pump System has separate wires on Aux and E, use a wire nut to attach both wires to a separate wire. Slide this third wire into the W2-Aux/E terminal.

Important!
Check the box for each wire you connect. You will need this information in Step 1.9.
Connect wires

Labels don’t match or have heat pump system? See User Guide.

Attach thermostat to wall plate

Align the thermostat with wall plate and snap into place.

Switch heating/cooling system ON

Important

1.8a Verify that the C wire is connected at the thermostat and at the heating/cooling system.
1.8b Make sure the heating/cooling system door is firmly secured.
1.8c Switch power back ON for your heating/cooling system at the breaker box or its power switch.
Switch heating/cooling system ON

Select setup

Before connecting to your Wi-Fi network, you need to set initial thermostat options to define your heating/cooling system:

Language
Home or business

Follow prompts on the screen to select appropriate options.

1.9a Touch the language you want the thermostat to display, then touch Next.
1.9b Select Home or Business application, then touch Next.
1.9c Touch Next or name the thermostat location—touch THERMOSTAT and follow the rest of the instructions.
Select setup

1.9d Select what your thermostat will control and touch Next.
1.9e Select your system type and touch Next The system type determines other selection for completing initial setup. Use the checklist from Step 1.6 when making selections.
1.9f Touch Next after making selections on each screen.
1.9g Touch Done on the last screen. The thermostat displays an option to connect to your Wi-Fi network.
Select setup

Connect to your Wi-Fi network

Connect the Wi-Fi network

After touching Done on the final screen of the initial set up (Step 1.9g), the thermostat displays an option to connect to your Wi-Fi network.
2.1a Touch Yes to connect the thermostat to your Wi-Fi network. The screen displays the message “Searching for wireless networks. Please wait…” after which it displays a list of all Wi-Fi networks it can find.

Note: If you cannot complete this step now, touch I’ll do it later. The thermostat will display the home screen. Complete this process by selecting MENU > Wi-Fi Setup. Continue with Step 2.1b.
Connect the Wi-Fi network

2.1b Touch the name of the network you want to use. The thermostat displays a password page.
2.1c Using the keyboard, touch the characters that spell out your home network password.
2.1d Touch Done. The thermostat displays “Connecting to your network. Please wait…” then shows a “Connection Successful” screen.

Note: If your home network is not shown on the list, touch Rescan.
2.1e Touch Next to display the registration information screen.
Connect to your Wi-Fi network

Getting Help

If you get stuck…
At any point in the Wi-Fi connection process, restart the thermostat by removing the thermostat from the wallplate, wait for 5 seconds, and snap it back into place. From the home screen, touch MENU > Wi-Fi Setup > Choose a Network. Continue with Step 2.1b.
Need more help?
Find additional information in the User Guide.

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).

Register online for remote access

To register your thermostat, follow the instructions on Step 3.1.
Note: The Register Online screen remains active until you complete registration and/or touch Done.
Note: If you touch Done before you register online, your home screen displays an orange alert button telling you to register. Touching that button displays registration information and an option to snooze the task.
Register online for remote access

To view and set your Wi-Fi thermostat remotely, you must have a Total Connect Comfort account. Follow the instructions below.

View the Wi-Fi Thermostat Registration video at wifithermostat.com/videos

Open the Total Connect Comfort web site

Go to www.mytotalconnectcomfort.com
Open the Total Connect Comfort web site

If you have an account, click Login – or – click Create An Account.
3.2a Follow the instructions on the screen.
3.2b Check your email for a response 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.
3.2c Follow activation instructions in the email. 3.2d Log in.
Open the Total Connect Comfort web site

Getting started with voice

For information on how to control your thermostat with voice, see the included “Talking with your Thermostat” card.
Note that the voice commands for this thermostat are in English only.
Need help?
Visit wifithermostat.com or call 1-888-235-6569 for assistance before returning the thermostat to the store.
Getting started with voice
Connect the Wi-Fi network
Total Connect Comfort free app is available for Apple® iPhone®, iPad® and iPod touch® devices at iTunes® or at Google Play® for all Android™ devices.

Automation and Control Systems
Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 wifithermostat.com

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