Honeywell Home RTH8500 Touchscreen Programmable Thermostat Operating Manual

Honeywell Home RTH8500 Touchscreen Programmable Thermostat

BE CAREFUL! Never use sharp instruments, such as a pencil or pen, to press touchscreen keys. To prevent damage to the thermostat, always press the keys with your fingertip.
This thermostat contains a Lithium battery which may contain Perchlorate material. Perchlorate Material—special handling may apply, See www.dtsc.ca.gov/hazardouswaste/perchlorate
Note: Remove the wallplate from the thermostat and see the label on the back of the thermostat for the model number.

This thermostat is ready to go! Your new thermostat is pre-programmed and ready to go. See page 3 to check settings.

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).

About your new thermostat

Congratulations! You’ve just purchased the world’s most advanced, easy-to-use thermostat. It has been designed to give you many years of reliable service and touchscreen climate control.

Features

•  7-day program schedules maximize comfort and economy.
•  Armchair programming: Just pull the thermostat from the wall to set schedules.
•  One-touch temp control overrides the program schedule at any time.
•  Precise comfort control keeps the temperature within 1°F of the level you set.
•  Change/check reminders to let you know when to replace filters and batteries.
•  Large touchscreen display with backlight is easy to read—even in the dark.

A quick reference to controls

 

Other display messages

• Cool On: The cooling system is activated
•  Heat On: The heating system is activated
•  Aux Heat On: Auxiliary heating system is activated (heat pump systems only)

Clock setting

To set the current time display, press CLOCK, then press or t to adjust the time. Press and hold or to advance the time more quickly.
Press DONE to save & exit (or press CANCEL to exit without changing the time).
Note: The real-time clock should never require adjustment since it automatically updates for daylight savings time, and stores all date/time information.
Note: To change the current weekday display, see System Setup in your Installation Guide.

Fan setting

Press FAN to select fan operation, then press DONE.

• On: The fan is always on.
• Auto: The fan runs only when the heating or cooling system is on.

System setting

Note: The Auto and Em Heat system settings may not appear, depending on how your thermostat was installed.

Press the SYSTEM button to select, then press DONE.

• Heat: The thermostat controls only the heating system.
• Cool: The thermostat controls only the cooling system.
• Auto: The thermostat automatically selects heating or cooling depending on the indoor temperature.
• Off: Heating and cooling systems are off.
• Em Heat (only for heat pumps with auxiliary heat): The thermostat controls Emergency and Auxiliary Heat. The compressor is locked out.

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. (See next page to adjust times and temperatures of each time period.)

To adjust program schedules

1. Press SCHED, then EDIT.
2. Press day buttons (MON-SUN) to select the day(s).
3. Press s or t to set Wake time for the selected day(s).
4. Press s or t to set Heat and Cool temperature for this time period.
5. Press other time periods (LEAVE, RETURN, SLEEP) to set the time and temperatures for each.
6. Press DONE to save & exit (or press CANCEL to exit without saving changes).

Note: You can press CANCEL PERIOD to eliminate any unwanted time period.

Program schedule override (temporary)

Press or to immediately adjust the temper-ature. This will temporarily override the temperature setting for the current time period.
The new temperature will be maintained only until the time you set. When the timer expires, the program schedule will resume and set the temperature to the level you’ve programmed for the current time period. To cancel the temporary setting at any time, press CANCEL (or SCHED). The program schedule will resume.

Program schedule override (permanent)

Press HOLD to permanently adjust the temperature. This will turn off the program schedule. Whatever temperature you set will be maintained 24 hours a day until you manually change it or press CANCEL (or SCHED) to cancel “Hold” and resume the program schedule.

Vacation hold

This feature can suspend the program schedule for extended periods of time. Press or to set the temperature you want, then press or to set the time of day you want the schedule to resume when you return. Press HOLD twice, then press orto select the number of days. Whatever temperature you set will be maintained 24 hours a day for the number of days you select. After this number of days has elapsed, the previously programmed schedule will resume at the time you set. If you return earlier than expected, press CANCEL (or SCHED) to cancel “Hold” and resume the program schedule.

Screen cleaning

Press SCREEN to lock the screen for cleaning. The screen will remain locked for 30 seconds so you can clean the screen without changing any settings. After 30 seconds, press DONE to resume normal operation, or press SCREEN again if you require more time for cleaning.
Note: Do not spray any liquid directly on the thermostat. Spray liquids onto a cloth, then use the damp cloth to clean the screen. Use water or household glass cleaner. Avoid abrasive cleansers.

About your new thermostat

If activated during installation, the furnace filter reminder alerts you when it is time to replace your filter.
Press RESET after changing the filter, to restart the timer.
To change the reminder interval:

1.  Press MORE, then EDIT.
2. Press or select the desired interval, then press DONE.
3. Press RESET.
4. Press DONE to save and exit.

Special features

Smart Response® Technology: This feature allows the thermostat to “learn” how long the furnace and air conditioner take to reach programmed temperature settings, so the tem-perature is reached at the time you set. For example: Set the Wake time to 6 am and the temperature to 70°. The heat will come on before 6 am, so the temperature is 70° by the time you wake at 6. The message “Recovery” is displayed when the system is activated before a scheduled time period.

Compressor Protection: This feature forces the compressor to wait a few minutes before restarting, to prevent equipment damage. During the wait time, the message “Wait” is displayed on the screen.

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 automati-cally 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.

CAUTION: To avoid possible compressor damage, do not use Auto Changeover if the outside temperature drops below 50°F (10°C).

About your new thermostat Battery replacement/Customer Assistance

Grasp the thermostat and pull it to remove it from the wallplate Batteries are optional (to provide backup power) if your thermostat was wired to run on AC power when installed. Install fresh batteries immediately when the LO BATT warning begins flashing. The warning flashes about 30 days before batteries are depleted. Even if the warning does not appear, you should replace batteries once a year, or before leaving home for more than a month. For assistance with this product, please visit http://yourhome.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502.

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	•      Check circuit breaker and reset if necessary. •      Make sure power switch at heating & cooling system is on. •      Make sure furnace door is closed securely. •      If thermostat is battery powered, make sure fresh AAA alkaline batteries are correctly installed (see page 18).
Button on lower right of screen is blank	•      This button will remain blank unless the furnace filter change reminder is activated (see System Setup in your Installation Guide).

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. •      If “Wait” is displayed, the compressor protection timer is on. Wait 5 minutes for the system to restart safely, without damaging the compressor (see page 15).

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,

• return it, with a bill of sale or other dated proof of purchase, to the place from which you purchased it; or
• 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, 1985 Douglas Dr. N., Golden Valley, MN 55422, or whether a replacement product can be sent to

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.

Automation and Control Solutions Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
http://yourhome.honeywell.com
® U.S. Registered Trademark.
© 2013 Honeywell International Inc.
69-2220EF—05 M.S. 11-2013
Printed in the U.S.A. Honeywell Limited
705 Montrichard Avenue
Saint-Jean-sur-Richelieu, Quebec J2X 5K8

REFERENCE:

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Honeywell Home RTH8500 Touchscreen Programmable Thermostat Operating Manual

Honeywell Home RTH8500 Touchscreen Programmable Thermostat Operating Manual

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