Honeywell Home RTH111 Series Non-Programmable Thermostat

Identify System Type

This thermostat is compatible with the following systems:

• Gas, oil or electric furnace
• Central air conditioner
• Hot water system with or without pump
• Millivolt system
• Central heating and cooling system
• Heat pump without auxiliary/backup heat

Do you need assistance? We are here to help.

Call 1-800-468-1502 for wiring assistance before returning the thermostat to the store.

This thermostat cannot be used on heat pumps with backup heat or on multistage systems.

ATTENTION: MERCURY RECYCLING NOTICE

This product does not contain mercury. However, this product may replace a product that contains mercury. Mercury and products containing mercury should not be discarded in household trash.

For more information on how and where to properly recycle a thermostat containing mercury in the United States, please refer to the Thermostat Recycling Corporation at www.thermostat-recycle.org.

For mercury thermostat recycling in Canada, please refer to Switch the Stat at www.switchthestat.ca

NOTICE

To avoid possible compressor damage, do not run air conditioner if the outside temperature drops below 50 °F (10 °C).

Customer assistance

For assistance with this product, please visit honeywellhome.com

Or call Resideo Customer Care toll-free at 1-800-468-1502.

To save time, please note your model number and date code before calling.

Pull at bottom to remove thermostat from wallplate.

Turn thermostat over to find model number and date code.

Installation

1 Turn Off Power to Heating/Cooling System

Circuit breaker box or Heating/cooling system power switch

2 Remove Old Thermostat

Remove old thermostat but leave wallplate with wires attached.

Do not remove wallplate yet

If you have an older thermostat with a sealed mercury tube, turn to page 2 for proper disposal instructions.

Terminal designation

3 Label Wires with Tags

Label the wires using the supplied wire labels as you disconnect them.

Wire Labels

Apply these wiring labels to each wire with the appropriate terminal designation as you remove it from the existing thermostat.

Terminal designation

4 Separate Wallplate from New Thermostat

Remove wallplate from the new thermostat and mount onto wall.

Wallplate

5 Mount Wallplate

Mount the new wallplate using the included screws and anchors.

Drill 3/16-in. (4,76 mm) holes for drywall

Drill 3/32-in. (2,38 mm) holes for plaster

6 Connect Wires

Simply match wire labels.

If labels do not match letters on the thermostat, check “Alternate Wiring" on page 6 and connect to terminal as shown (see notes, below).

INSERT WIRES AND TIGHTEN SCREWS

SCREW

WIRE HOLE

LABELED WIRES

Remove metal jumper if you have both R and Rc wires.

We are here to help. Call 1-800-468-1502 for wiring assistance.

Alternate Wiring

If labels do not match letters on the thermostat, check the chart below and connect to terminal as shown here (see notes, below).

Do Not Connect

NOT USED

Notes:

1. If wires will be connected to both R and Rc terminals, remove metal jumper.
2. Do not use C or X. Wrap bare end of wire with electrical tape.
3. If you have a heat pump without auxiliary/backup heat connect O or B, not both. If you do not have a heat pump, do not connect B. Wrap bare end of wire with electrical tape.
4. Place a jumper (piece of wire) between Y and W if you are using a heat pump without auxiliary/backup heat.

7 Install Batteries

Install two AAA alkaline batteries.

Back of thermostat

8 Set fan operation switch

Move the switch to the proper setting:

Gas or Oil: For gas or oil heating systems, leave the fan operation switch in this factory-set position (for systems that control the fan in a call for heat).

Electric or Heat Pump: Change the switch to this setting for heat pump or electric heat systems. (This setting is for systems that allow the thermostat to control the fan in a call for heat, if a fan wire is connected to the G terminal.)

9 Install Thermostat onto Wallplate

Install thermostat onto the wallplate on the wall.

10 Turn Power Back On

Turn the power back on to the heating/cooling system.

Circuit breaker box or Heating/cooling system power switch

11 If your system type is...

If your system type is:

• Single Stage Heat and Cool
• Heat Only or Cool Only

Congratulations, you're done!

If you are not sure of your system type or if you have other questions, call us toll-free at 1-800-468-1502.

This thermostat works on single stage 24 volt or 750 mV systems. It will NOT work on multi-stage systems.

Advanced Installation

Enter System Setup

To enter system setup, press and hold both the [up arrow] and [down arrow] buttons until the display changes (approximately 5 seconds).

Changing Settings

1. Press the [up arrow] or [down arrow] button to change the setting.
2. Press the [up arrow] and [down arrow] buttons simultaneously for one second to advance to the next function.
3. When the last function is displayed, press the [up arrow] and [down arrow] buttons to save any changes and exit the menu.

NOTE: If you do not press any button for 60 seconds while you are in the setup menu, the thermostat automatically saves any changes made and exits the menu.

* Compressor Protection: This feature forces the compressor to wait approximately 5 minutes before restarting, to prevent equipment damage. During the wait time, the message “Cool On” or “Heat On” is displayed on screen.

About your new thermostat

Your new Resideo thermostat has been designed to give you many years of reliable service and easy-to-use, push-button climate control.

• Displays ambient (measured) temperature at all times
• One-touch access to setpoint temperature
• Built-in compressor protection

Thermostat controls

System Switch is used to control your heating or cooling system.

• Heat: Heating system control.
• Off: All systems off.
• Cool: Cooling system control.

Temperature adjustment

Press the up or down buttons until you reach the desired temperature.

NOTE: Make sure the SYSTEM switch is set to the system you want to control (Heat or Cool).

Fan Switch is used to control your fan.

In "Auto" mode, the fan runs only when the heating or cooling system is on.

If set to “On,” the fan runs continuously.

Display screen

Setpoint indicator

Appears when the setpoint temperature is displayed.

Low battery warning (see page 11)

System status

Cool on: Cooling system is on.
Heat on: Heating system is on.
When Cool On is flashing, compressor protection is engaged (see page 11).

Temperature

The ambient (measured) temperature is normally displayed. To view the setpoint temperature, press the Up or Down button once. The setpoint temperature will appear for five seconds.

Built-in compressor protection

This feature helps prevent damage to the compressor in your air conditioning or heat pump system.

Damage can occur if the compressor is restarted too soon after shutdown. This feature forces the compressor to wait 5 minutes before restarting.

During the wait time, the display will flash the message Cool On (or Heat On if you have a heat pump). When the safe wait time has elapsed, the message stops flashing and the compressor turns on.

Battery replacement

Install two fresh AAA batteries when Lo Batt flashes on the screen. Lo Batt appears for 60 days before the batteries are depleted.

Replace batteries once a year, or when you will be away for more than a month.

Most settings are stored in non-volatile (permanent) memory. Only the clock and the day must be set after you replace the batteries.

Set the System switch to Off before removing the batteries. Otherwise, the heating/cooling system could remain activated even when batteries are removed.

Turn thermostat over, insert fresh AAA alkaline batteries, then reinstall thermostat.

Troubleshooting

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

• Display is blank: Make sure fresh AAA alkaline batteries are correctly installed.
• Heating or cooling system does not respond:
  • Set system switch to Heat. Make sure the temperature is set higher than the Inside temperature.
  • Set system switch to Cool. Make sure the temperature is set lower than the Inside temperature.
  • Wait 5 minutes for the system to respond.
• Cannot change setpoint:
  • Verify the system switch is set to Heat or Cool mode. The thermostat should allow you to change the setpoint within the following ranges:
    Heat: 40° to 90°F (4.5° to 32°C).
    Cool: 50° to 99°F (10° to 37°C).
• “Cool On” or “Heat On” is flashing: Compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor.
• “Heat On” is not displayed: Set the System switch to Heat, and set the temperature level above the current room temperature.
• “Cool On” is not displayed: Set the System switch to Cool, and set the temperature level below the current room temperature.

For assistance with this product, please visit honeywellhome.com or call Resideo Customer Care toll-free at 1-800-468-1502.

Electrical Ratings

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) year 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 1-800-468-1502. 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 1-800-468-1502.

Resideo Inc., 1985 Douglas Drive North Golden Valley, MN 55422

33-00137EF-01 M.S. 09-19 Printed in United States

This product is manufactured by Resideo Technologies, Inc., Golden Valley, MN, 1-800-468-1502

©2019 Resideo Technologies, Inc. The Honeywell Home trademark is used under license from Honeywell International Inc. All rights reserved.

33-00137EF-01