Honeywell Home RTH2510 Programmable Thermostat User Manual

Honeywell Home RTH2510 Programmable Thermostat

CAUTION: EQUIPMENT DAMAGE HAZARD To prevent possible compressor damage, do not use Cooling mode when the outdoor temperature is below 50 °F (10 °C).

Need Help?

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

About your new thermostat

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

Features

1. The backlit display is easy to read
2. Displays ambient (measured) temperature at all times
3. One-touch access to the setpoint temperature
4. Separate programmable daily schedules (7-day programming)
5. Temporary and permanent override of schedule
6. An early start ensures the right temperature at the right time
7. Built-in compressor protection

**Controls

**

Display

When Heat On or Cool On is flashing, compressor protection is engaged (see page 15).

Set the clock

1. Press the Set button. Set Time will appear on the screen and the time display will flash.
2. Press the Up or Down button to set the time.
3. Press the Set button again. Set Day will flash on the screen.
4. Press the Up or Down button to select the day of the week.
5. Press the Run button to save the changes & exit. (The changes are also saved if you do not press any button for 60 seconds.)

NOTE: The clock has lost its settings when the time display flashes. If the thermostat is following the schedule, it will use the temperature settings programmed for the Wake period for Monday until you readjust the clock.

System switch (Heat/Cool)

Use the System switch to place the system in one of the following modes:

1. Cool: The system is in Cooling mode.
2.  Off: The system is off.
3.  Heat: The system is in Heating mode.

CAUTION: EQUIPMENT DAMAGE HAZARD.
Do not use Cooling mode when the outdoor temperature is below 50°F (10°C).

Fan switch (Auto/On)

Use the Fan switch to select the fan operation.

1. Auto: The fan runs only when heating or cooling is activated (commonly used setting).
2. On: The fan runs continuously.

Save money by setting program schedules

It’s easy to program your system for maximum energy savings. You can program four time periods each day, with different settings for weekdays and weekends.

1. Set to the time you awaken and the temperature you want during the morning, until you leave for the day.
2. Set to the time you leave home and the temperature you want while you are away (usually an energy-saving level).
3. Set to the time you return home and the temperature you want during the evening, until bedtime.
4. Set to the time you go to bed and the temperature you want overnight (usually an energy-saving level).

Energy-saving settings

The thermostat is preset with energy-saving program settings. See the next two pages if you wish to modify the settings.

Modifying the schedule (RTH2510)

1. Press the Set button 3 times until Set Schedule appears. The Wake period is displayed.
   NOTE: To set another period, press the Set button as many times as needed until the desired period and the desired day are displayed and its time or temperature is flashing.

2. When the time flashes, press the Up or Down button to set the time.

3. Press the Set button.

4. To set the temperature for cooling mode, first place the System switch in Cool. To set the temperature for heating mode, first place the System switch in Heat.

5. When the temperature flashes, press the Up or Down button to set the temperature.

6. Press the Set button.

7. Repeat steps 2 through 6 to set each of the remaining periods.

8. Once all changes are made, press the Run button to save them and return to normal display. (The changes will automatically be saved if you do not press any button for 60 seconds.)

Modifying the schedule (RTH2410)

1. Press the Set button 3 times until Set Schedule appears. The Wake period is displayed.
   NOTE: To set another period, press the Set button as many times as needed until the desired period and the desired day are displayed and its time or temperature is flashing.

2. When the time flashes, press the Up or Down button to set the time.

3. Press the Set button.

4. To set the temperature for cooling mode, first place the System switch in Cool. To set the temperature for heating mode, first place the System switch in Heat.

5. When the temperature flashes, press the Up or Down button to set the temperature.

6. Press the Set button.

7. Repeat steps 2 through 6 to set each of the remaining periods.

8. Once all changes are made, press the Run button to save them and return to normal display. (The changes will automatically be saved if you do not press any button for 60 seconds.)

Temporary override of schedule

To temporarily ignore the schedule, press the Up or Down button until the desired temperature is displayed. The word Temporary will appear on the screen and the period display will flash to indicate that the current period has been overridden. The new temperature will be used until the next period begins.

NOTE: Pressing the Up or Down button once will display the setpoint temperature. To change the setpoint temperature, press either button more than once. Press the Run button if you wish to cancel the temporary setting before the beginning of the next period.

Permanent override of schedule

1. To permanently ignore the schedule, press the Up or Down button 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.
2. Press the Run button if you wish to cancel the override and resume the schedule. The word Hold will disappear and the thermostat will be set to the temperature programmed for the current period.

Early start

Early start allows the thermostat to “learn” how long your furnace or air conditioner takes to reach the set temperature. Simply program the desired times and desired temperatures into the schedule. The thermostat will determine when to activate heating or cooling so that the desired temperature is attained at the desired time.
Example: If you set the Wake time to 6 a.m. and the temperature to 70 °F (21 °C), the heat will come on before the set time, so the temperature is 70 °F (21 °C) by the time you wake at 6 a.m.

Built-in compressor protection

Your thermostat has a feature that helps prevent damage to the compressor of your air conditioning or heat pump system. Because 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 message Cool On or Heat On flashes on the screen. When the safe wait time has elapsed, the message stops flashing and the compressor turns on.

Battery replacement

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

• 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.

In case of difficulty

1. The screen is blank. Ensure two fresh AAA alkaline batteries are correctly installed.
2. Temperature settings cannot be changed.
3. The System switch is off.
4. You are setting the temperature outside its allowable range:
5. Heat: 40°F to 90°F (4.5°C to 32°C)
6. Cool: 50°F to 99°F (10°C to 37°C)
7. Cool On or Heat On is flashing The compressor protection delay is underway. Wait for the delay to end (maximum of 5 minutes).
8. HI appears on the screen The ambient (measured) temperature is above 122°F (50°C).
9. LO appears on the screen The ambient (measured) temperature is below 32°F (0°C).
10. E1 appears on the screen  The temperature sensor circuit is opened. Replace the thermostat.
11. E2 appears on the screen The temperature sensor circuit is shorted. Replace the thermostat.

Customer assistance

For assistance with this product, please visit www.resideo.com. Or call Resideo Customer Care toll-free at 1-800-468-1502. To save time, before calling, proceed as follows:

1. Loosen the locking screw at the bottom of the thermostat. Note that the screw is captive and cannot be removed from the  wallplate.
2. Separate the thermostat from the wallplate as per figure on the  right.
3. Note your model number and date code on the thermostat’s wallplate.

One-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 Technologies, Inc.
• 1985 Douglas Drive North, Golden Valley, MN 55422
• 1-800-468-1502
• 69-2420ES—03 M.S. Rev. 04-22 | Printed in United States
• © 2022 Resideo Technologies, Inc. All rights reserved.The Honeywell Home trademark is used under license from Honeywell International, Inc. This product is manufac tured by Resideo Technologies, Inc. and its affiliates

References

• Smart Home Solutions in EMEA | Resideo

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