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Honeywell ENERGYPRO T8665C Owner's Manual
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Honeywell ENERGYPRO T8665C Owner's Manual

Honeywell ENERGYPRO T8665C Owner's Manual

Honeywell thermostat user manual
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See also: Owner's Manual
T8665C,D,E EnergyPro™ Thermostat
OWNER'S GUIDE
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc.
All Rights Reserved
69-1538

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Summary of Contents for Honeywell ENERGYPRO T8665C

  • Page 1 T8665C,D,E EnergyPro™ Thermostat OWNER’S GUIDE ® U.S. Registered Trademark Copyright © 2003 Honeywell International Inc. All Rights Reserved 69-1538...

  • Page 2: Table Of Contents

    Introduction ... Using this Guide ... Thermostat Features ... Operating Your Thermostat ... 11 Setting the Clock ... 12 Programming Your Thermostat ... 25 Replacing the Batteries (T8665C Only) ... 38 Adaptive Intelligent Recovery™ Control ... 40 Troubleshooting (Table 3) ... 43 Warranty ...

  • Page 3: Introduction

    As part of a larger system of products and services from your Energy Utility, your new thermostat allows you to take advantage of special programs offered through your Energy Utility. These programs...

  • Page 4: Using This Guide

    See Fig. 2. WARNING: This product operates under provisions of Part 15 of the FCC Rules. Modifications to this product not specifically authorized by Honeywell may void the user’s authority to operate this device.
  • Page 5 SETTING AND ACTIVATES VACATION HOLD FEATURE DAYLIGHT TIME SELECTS STANDARD TIME OR DAYLIGHT SAVING TIME COPY COPIES SETTINGS FROM ONE DAY TO ANOTHER DAY FOR QUICKPROGRAMMING Fig. 1. Thermostat keyboard description. LEAVE DIGITAL DISPLAY SET LEAVE TIMES AND TEMPERATURES Leave Wake...
  • Page 6 SHOWS SYSTEM ON DAYLIGHT SAVING TIME DISPLAYS EITHER ROOM OR SET TEMPERATURE SHOWS TEMPERATURE DISPLAYED IS THE CURRENT ROOM TEMPERATURE Fig. 2. Example of thermostat display. SHOWS SHOWS TEMPERATURE TEMPERATURE DISPLAYED IS THE CURRENT SETTING CHANGED SET TEMPERATURE FOR THIS...

  • Page 7: Thermostat Features

    • Customize the program schedule— program your own schedule to fit your needs. • Temporary schedule override—set the thermostat higher or lower for the current program schedule. • Permanent schedule override—set the thermostat higher or lower indefinitely. • Vacation mode (1 to 255 days) for added comfort and energy savings.
  • Page 8 When your thermostat is helping your Energy Utility to manage energy in your community, the word, SAVE, is displayed on the thermostat as shown. If you have any questions about the application 69-1538 of this thermostat or these special programs and features, please contact your local Energy Utility.

  • Page 9: Price Response

    Wake Price Response If your utility offers a Price Response Program, this thermostat works with your Energy Utility to inform you of the rate in effect at any given time and automatically adjust your energy use for each rate. The rate in effect is indicated on the thermostat display as shown (Critical, Hi, Med, and Lo).
  • Page 10 Set Program Set Day/Time Critical Em Ht Aux Ht Wake Display shows Critical rate in effect. Set Program Set Day/Time Em Ht Aux Ht Wake Display shows High rate in effect. 69-1538 System Cool Room Auto M20906 System Cool Room Auto M20903 Set Program Set Day/Time...

  • Page 11: Operating Your Thermostat

    First, let’s look at features you’ll be using often, like setting the System and Fan keys, how to override the current programming M14596 mode or to hold the thermostat at a specific temperature while you go on vacation. You can Program 69-1538...

  • Page 12: Setting The Clock

    SETTING THE CLOCK Setting Current Day and Time...
  • Page 13 Mon = Monday, Tue = Tuesday, Wed = Wednesday, Thu = Thursday, Fri = Friday, Sat = Saturday, Sun = Sunday. Press Day key to set current day. Example display shows Tuesday. Press Time ∆ or Time ∇key until current time displays. Tap Set Current Day/Time key to 4.

  • Page 14: Daylight Saving Time

    Daylight Saving Time NOTE: If current time is Daylight Saving Time, press Daylight Time key to display “DST.” Press Daylight Time key to set Daylight Saving Time. 69-1538 Pressing Daylight Tiime key more than once in Daylight Time Setting System and Fan Keys Use the System and Fan keys to change the system and fan settings.
  • Page 15 Setting System Key Press the System key until the desired system (Heat, Off, Cool, or Auto) displays. Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between heating and cooling operation, depending on the indoor temperature.

  • Page 16: Setting Temporary Temperatures

    Setting Fan Key Press Fan key until desired mode (On or Auto) displays: On: Fan operates continuously. Auto: Fan operates only when heating or cooling. Setting Temporary Temperatures You can override the current schedule period to temporarily change the temperature setting until the next schedule period, or you can change and hold the temperature setting indefinitely.
  • Page 17 Press the Run Program key to cancel the temporary temperature setting before the designated time. Temporary After selecting a temporary setting, the display reads “Temporary” until cancelled. Example display shows temporary heat setting of 70° at 6:00 AM. Program System Heat Changing and Holding Temperature Heat...
  • Page 18 3. Press Run Program key to cancel hold. Press Hold Temp key once to display the thermostat in Hold mode. Example display shows temporary heat setting of 60°. 69-1538 Changing Temperature Setting Until a...
  • Page 19 IMPORTANT To cancel Vacation Hold before desig- nated time, press Run Program key. 2. Press Time ∆ or Time ∇ until desired number of days (1 to 255 days) displays. Hold for Days Wake Press Time ∆ or Time ∇ key to select number of vacation days.
  • Page 20 NOTE: Only the heating temperature is used when System is set to Heat. Similarly, only the cooling temperature is used when System is set to Cool. The thermostat uses both heating and cooling temperatures when System is set to Auto. Press increase or decrease Hold temperature.

  • Page 21: Displaying Outdoor Temperature

    Using the i (Information) Key Room Wake INFORMATION KEY The i (information) key provides information at your fingertips in this sequence of key presses: • Outdoor temperature (if equipped). • Current setpoint of mode in use (Heat or Cool). • Setpoint of mode not currently in use. •...

  • Page 22: Displaying Current Settings

    If filter status is expired, press i key twice to display outdoor temper- ature. See Filter Indicator section for instructions on resetting filter indicator. Displaying Current Settings Press i key twice to check current temperature setpoint. Press i key three times to check temperature setpoint of mode not currently in use.

  • Page 23: Filter Indicator

    Filter Room Wake FILTER EXPIRATION INDICATOR Your thermostat monitors the amount of time the fan is running and lets you know when to replace the filter, based on the number of fan run-time days you select. On expiration, thermostat displays “Filter.”...
  • Page 24 Two LED indicators located on upper right of the Program thermostat indicate when a Heat Pump Fault Monitor or Equipment Monitor signal is sent to the thermostat from the system. When Heat Pump Fault Monitor LED indicator lights (red), see Troubleshooting section.

  • Page 25: Programming Your Thermostat

    THERMOSTAT 7-Day Program and Operation Your thermostat is 7-day programmable, which means you can set your thermostat for four periods (Wake, Leave, Return and Sleep) and up to eight temperatures (four Heat and four Cool) for each day of the week. Each day can be the same or different.

  • Page 26: Day Preprogrammed Schedule

    RETURN period. 7-Day Preprogrammed Schedule Your thermostat is preprogrammed with the schedule shown in Table 1 (same schedule for all days of the week). You may keep this schedule or develop your own. Before starting the programming procedure, use Table 2 to plan your schedule.
  • Page 27 Instructions: 1. Write the time you want for each program period. 2. Write the heating and cooling tempera- tures you want for each period. WAKE All Days TIME 6:00 AM AUTO H 70 C 78 (21) (2.5) 3. Draw a circle around the fan operation Table 1.
  • Page 28 Customizing Your Own 7-Day Schedule WAKE TIME AUTO TIME AUTO TUES TIME AUTO TIME AUTO 69-1538 Table 2. Your 7-Day Schedule. LEAVE TIME TIME AUTO TIME TIME AUTO TIME TIME AUTO TIME TIME AUTO RETURN SLEEP TIME AUTO AUTO TIME AUTO AUTO TIME...
  • Page 29 Table 2. Your 7-Day Schedule. (Continued) WAKE THURS TIME AUTO TIME AUTO TIME AUTO LEAVE TIME TIME AUTO TIME TIME AUTO TIME TIME AUTO RETURN SLEEP TIME AUTO AUTO TIME AUTO AUTO TIME AUTO AUTO 69-1538...

  • Page 30: Programming The First Day

    Programming the First Day To modify the preprogrammed schedule, start by programming the Wake time and temper- ature and fan operation for any one day. 1. Press the Wake key. Press Wake key to enter program mode. Example display shows 6:00 AM Tuesday with Heat set to 70°F.
  • Page 31 Set Program Wake Press the Time ∆ or Time ∇ key to select time Wake period will begin. Example display shows Wake period will begin at 6:30 AM. The program times are in fifteen-minute intervals; for example, 8:00, 8:15, 8:30. 4.
  • Page 32 5. Press Fan key to modify fan operation. Selecting Auto means fan runs only when heating or cooling equipment is operat- ing. Selecting On means fan runs contin- uously for entire schedule period. 6. Press Heat/Cool Settings key to make selections for opposite system setting (either Heat or Cool).

  • Page 33: Copying A Day

    Auto M14592 to select cooling Copying a Day The thermostat must be in program mode to Sleep Repeat steps 1 through 7 for each day of the week that has a different schedule from the first day. Or refer to Copying a Day section to copy any programmed day to another day.
  • Page 34 2. Press Day key to select the day to copy from. Set Program Wake Press Day key to select the day schedule to copy. Example display shows thermostat in program mode with Monday ready to be copied. 69-1538 Return Sleep...
  • Page 35 Press Day key again to select the day to copy to. Example display shows Monday and Wednesday. Because Monday was already selected, Monday schedule will be copied to Wednesday. 5. Press Copy key. Press Copy key again to complete copy command. Example display shows “donE”.

  • Page 36: Clearing A Program Period

    Clearing a Program Period Thermostat must be in program mode to use clear feature. Go to step 2 if thermostat is already in program mode (Set Program displays in upper left corner. 1. Press Leave, Return or Sleep key to enter program mode.
  • Page 37 Wake and Sleep. If you clear only Leave and Return periods for Saturday (or any day), thermostat remains in Wake period for all of Saturday until Sleep period. periods to be cleared. return to normal operation.

  • Page 38: Replacing The Batteries (T8665C Only)

    1. Install batteries in wallplate so positive terminals all point up (as shown). 2. If the thermostat is already mounted on the wall, remove the thermostat by placing your thumb between the thermostat and wallplate and pulling the thermostat up and away as shown on the next page.
  • Page 39 Although thermostat has a low battery indicator, replace batteries yearly to prevent leakage and thermostat and heating/cooling system from shutting down due to lack of thermostat battery power. 4. If you insert new batteries within 20 to 30 seconds of removing old batteries, the system retains current time and day.

  • Page 40: Adaptive Intelligent Recovery™ Control

    ADAPTIVE INTELLIGENT RECOVERY™ CONTROL Your new thermostat is so smart, it’s almost human. You perceive temperature from a variety of sources, not only from the air in the room, but also from your surrounding walls, windows and furnishings.
  • Page 41 (for example, 70° at 6:00 AM) and adjusts the next day’s recovery start time accordingly. After four to eight days, the thermostat has adjusted to local weather, your lifestyle, the construction of your home, and your heating and cooling system.
  • Page 42 Sleep Recovery ENERGY SAVINGS PERIOD THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE DURING THE COOLING SEASON. IF In Recovery IS DISPLAYED, PRESS Fig. 3. Explanation of Adaptive Intelligent Recovery™ control. 69-1538 At 6:00 AM...

  • Page 43: Troubleshooting (Table 3)

    Thermostat is not being come on. powered. Table 3. Troubleshooting. Possible Cause Check if the thermostat is mounted and latched on the wallplate—mount and latch the thermostat on the wallplate. Check if the circuit breaker is tripped— reset the circuit breaker.
  • Page 44 Symptom Temperature The upper or lower setting does not temperature limits were change (Example: reached. cannot set the heating higher or the cooling lower). 69-1538 Table 3. Troubleshooting. (Continued) Possible Cause Check that the temperature setpoints are Heating: 40 to 90° (4.5 to 32 °C). Cooling: 45 to 99°...
  • Page 45 Symptom Heating does not The thermostat is part of a come on. Demand Response event. No power to thermostat. System selection is not set to Heat. Heating setpoint is below room temperature. Table 3. Troubleshooting. (Continued) Possible Cause If thermostat indicates SAVE, wait until energy saving event is complete.
  • Page 46 Symptom Cooling does not The thermostat is part of a come on Demand Response event. No power to thermostat. System selection is not set to Cool. Cooling setpoint is above room temperature. 69-1538 Table 3. Troubleshooting. (Continued) Possible Cause If thermostat indicates SAVE, wait until energy saving event is complete.
  • Page 47 Heat Pump Fault The heat pump signaled the Monitor LED is thermostat to indicate a lighted. problem. Table 3. Troubleshooting. (Continued) Possible Cause Wait a minute after seeing the Move the System switch to Em. Ht setting (heat pump only).
  • Page 48 Symptom Room temperature Thermostat is operating in is cooler than Pre-cool mode. If the current setting and thermostat displays PrE, air conditioner is wait until the Pre-cool event still running. is complete. To cancel, press and hold Run Program for three seconds until DONE is displayed.
  • Page 49 Symptom 1COM is displayed. The thermostat is unable to communicate with Energy Utility management system controller. Heat or cool turns Adaptive Intelligent on before Recovery™ control is on. programmed time. Table 3. Troubleshooting. (Continued) Possible Cause Contact your energy utility for assistance.

  • Page 50: Warranty

    (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time. If the product is defective:...

  • Page 51: Customer Assistance

    If you have any questions concerning this warranty, please write our Honeywell Customer Relations, 1985 Douglas Drive North, Golden Valley, MN 55422. In Canada, write Retail Products ON15-02H, Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
  • Page 52 Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-1538 G.H. 04-03 Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers.

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