Honeywell Home RTHL221 Programmable Thermostat Operating Manual

Honeywell Home RTHL221 Programmable Thermostat

About your new thermostat

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

Features

• Backlit display on RTH2300
• Displays ambient (measured) temperature at all times
• One-touch access to the setpoint temperature
• Preset program settings
• Temporary and permanent override of schedule
• Built-in compressor protection

This thermostat is ready to go!

Your new thermostat is pre-programmed and ready to go. All you have to do is set the time and day. Then check the settings below and change them if needed:

1. Set time and day (required for proper operation)…………………………. See page 6
2. Select system setting: Preset to Off………………………………. To change, see page 7
3. Select fan setting: Preset to Auto…………………………………. To change, see page 8
4. Program schedules: Preset to energy-saving levels while you’re at work or asleep…………………………………. To change, see pages 9-12
   ONE-TOUCH TEMP CONTROL: You can override the program schedule at any time, and manually adjust the temperature (see pages 13-14).

A quick reference to controls

A quick reference to the display screen

To set the time and day

1. Press the SET button, then press it to set the clock time.
2. Press the SET button, then press to select the day of the week.
3. Press RUN to save & exit.
   Note: If the clock flashes, the thermostat will follow your settings for the Monday “Wake” time period until you reset the time and day.

Select the system setting

The SYSTEM switch can be set to control your heating or cooling system, depending on the season.

• Cool: Cooling system control.
• Off: All systems are off.
• Heat: Heating system control.
  CAUTION: EQUIPMENT DAMAGE HAZARD. To prevent possible compressor damage, do not operate the cooling system when the outdoor temperature is below 50°F (10°C).

Select the fan setting

Set the FAN switch to Auto or On.
In “Auto” mode (the most commonly used setting), the fan runs only when the heating or cooling system is on.
If set to “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.

Set to the time you awaken and the temperature you want during the morning, until you leave for the day.

Set to the time you leave home and the temperature you want while you are away (usually an energy-saving level).

Set to the time you return home and the temperature you want during the evening, until bedtime.

Set to the time you go to bed and the temperature you want overnight (usually an energy-saving level)

 

Energy saving settings for maximum cost savings

This thermostat is pre-set to use energy-saving program settings. We recommend these settings since they can reduce your heating/cooling expenses by as much as 33%. (See next page to adjust times and temperatures of each time period.)

Program schedules

To adjust program schedules (RTH2300)

1. Press SET until Set Schedule is displayed.
2. Press to set your weekday Wake time (Mo-Fr), then press SET.
3. Pressto set the temperature for this time period, then press SET.
4. Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each weekday time period.
5. Press SET to set weekend time periods (Sa & Su), then press RUN to save & exit.
   Note: Make sure the thermostat is set to the system you want to program (Heat or Cool).

To adjust program schedules (RTH221)

1. Press SET until Set Schedule is displayed.
2. Press to set your Wake time (Mo-Su), then press SET.
3. Pressto set the temperature for this time period, then press SET.
4. Set time and temperature for the next time period (Leave). Repeat steps 2 and 3 for each time period.
5. Press RUN to save & exit.
   Note: Make sure the thermostat is set to the system you want to program (Heat or Cool).

Program schedules override (temporary)

Press to immediately adjust the temperature. This will temporarily override the temperature setting for the current time period.
“Temporary” will appear on the display.
The new temperature will be maintained only until the next programmed time period begins (see page 9).
To cancel the temporary setting at any time, press RUN.

Program schedules override (permanent)

Press HOLD to permanently adjust the temperature. This will override the temperature settings for all time periods.
The “Hold” feature turns off the program schedule and allows you to adjust the thermostat manually, as needed.
Whatever temperature you set will be maintained 24 hours a day, until you manually change it, or press RUN to cancel “Hold” and resume the program schedule.

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.

Change filter (RTH2300 only)

If the filter reminder is turned on during installation, the words Change Filter will flash on the screen when the filter needs to be replaced.
After you replace the air filter, press and hold the RUN button for 3 seconds to reset the alert.

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 the batteries are removed.

Customer Assistance

For assistance with this product, please visit http://yourhome.honeywell.com.
Or call Honeywell Customer Care toll-free at 1-800-468-1502.
To save time, please note your model number and date code before calling.

In case of difficulty

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 the furnace door is closed securely.
• Make sure fresh AAA alkaline batteries are correctly installed (see page 16).

The heating or cooling system does not respond

• Set the system switch to Heat (see page 7). Make sure the temperature is set higher than the Inside temperature.
• Set the system switch to Cool (see page 7). Make sure the temperature is set lower than the Inside temperature.
• Wait 5 minutes for the system to respond.

Temperature settings do not change

Make sure heating and cooling temperatures are set to acceptable 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

The compressor protection feature is engaged. Wait 5 minutes for the system to restart safely, without damage to the compressor (see page 15)

“Heat On” is not displayed
Set the System switch to Heat, and set the temperature level above the current room temperature (see page 7).
“Cool On” is not displayed
Set the System switch to Cool, and set the temperature level below the current room temperature (see page 7).

1-year limited warranty

Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer. If at any time during the warranty period, the product is determined to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’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 Honeywell Customer Care at 1-800-468-1502. Customer Care will make the determination whether the product should be returned to the following address: Honeywell Return Goods, Dock 4 MN10-3860, 1885 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 Honeywell that the defect or malfunction was caused by damage that occurred while the product was in the possession of a consumer.
Honeywell’s sole responsibility shall be to repair or replace the product within the terms stated above. HONEYWELL 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 HONEYWELL 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 Honeywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422, or call 1-800-468-1502. In Canada, write Retail Products ON15-02H, Honeywell Limited/ Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V4Z9.

Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North Golden Valley, MN 55422
http://yourhome.honeywell.com
® U.S. Registered Trademark
© 2012 Honeywell International Inc.
69-2727ES—01 M.S. 05-12
Printed in the U.S.A

Reference

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Honeywell Home RTHL221 Programmable Thermostat Operating Manual

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