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Owner's Manual - Page 1
Registered Trademark Copyright © 2003 Honeywell International Inc. All Rights Reserved
69-1538 T8665C,D,E EnergyPro™ Thermostat
OWNER'S GUIDE
® U.S.
Owner's Manual - Page 2
Contents
Introduction ...3 Using this Guide ...4 Thermostat Features ...7 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 ...50 Customer Assistance ...51
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Owner's Manual - Page 4
... period, temperature, filter information, system and fan operation.
Keyboard
The keyboard is located behind the thermostat cover. See Fig. 2.
-
Modifications to this product not specifically authorized by Honeywell may void the user's authority to operate this symbol.
Look for helpful
60 70 80 90
60 70 80 90
tips throughout this guide
when you identify...
Owner's Manual - Page 5
...
Wake
Heat/Cool Settings
Leave
Return
Set Program
Filter
System
Copy
Sleep Fan
HEAT/COOL SETTINGS SWITCHES BETWEEN HEAT SETPOINTS AND COOL SETPOINTS WHILE PROGRAMMING
INCREASE RAISES TEMPERATURE SETTING
DECREASE LOWERS TEMPERATURE SETTING
INFORMATION DISPLAYS CURRENT HEAT/COOL TEMPERATURE SETTING, FILYER STATUS, AND OUTDOOR TEMPERATURE (WHEN INSTALLED). Thermostat keyboard description...
Owner's Manual - Page 6
... ACTIVE
SHOWS VACATION HOLD DURATION
SHOWS FILTER TIMER EXPIRED (TIME TO REPLACE FILTER)
SHOWS CURRENT DAY OR DAYS BEING PROGRAMMED
SHOWS CURRENT PROGRAM PERIOD OR PERIOD BEING PROGRAMMED
DISPLAYS EITHER CURRENT TIME OF DAY OR PROGRAM TIMES
SHOWS WHEN THERMOSTAT IS IN THE PROGRAMMING MODE
SHOWS THERMOSTAT IS IN THE SET CURRENT DAY/TIME MODE
SHOWS...
Owner's Manual - Page 7
...
• Adaptive Intelligent Recovery™ Control for energy savings while on vacation. 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 comfort level you want when you return.
• Set the filter indicator (0, 15, 30, 60...
Owner's Manual - Page 9
The rate in effect, the thermostat displays PrE. This typically involves controlling your home at a higher temperature during cooling season and a lower ... slightly raise or lower your home temperature setting immediately prior to a Demand Response event to minimize the effect on the thermostat display as shown (Critical, Hi, Med, and Lo).
Set Program Set Day/Time
Em Ht Aux Ht
Tue Wake...
Owner's Manual - Page 12
... and pencil points can be controlled as part of vacation so you are comfortable when you return and yet save energy while you are away. Press Day key until a key is automatically
updated.
2. Day
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12
even program the thermostat to return to show information displayed.
M14580
Press Set Current Day/Time key to...
Owner's Manual - Page 15
... manufacturer instructions. Off: Both the heating and cooling are off for five minutes before restarting. Cool: The thermostat controls the cooling.
The compressor is controlled as ... Heat: The thermostat controls the heating. Auto: The thermostat automatically changes between heating and cooling operation, depending on the indoor temperature. Setting System Key
Press ...
Owner's Manual - Page 25
...controller installed by your thermostat for four periods (Wake, Leave, Return and Sleep) and up to Em. Temporary AM
System Heat
Mon
Heat
Fan Auto M17763
Successful Communication Indicator
The thermostat...which means you
heat pump service com- PROGRAMMING YOUR THERMOSTAT
7-Day Program and Operation
Your thermostat is expensive, so act quickly. Each day can set your Energy Utility. Ht....
Owner's Manual - Page 40
... things, Adaptive Intelligent Recovery™ control gradually changes the temperature from the energy savings setting to the comfort setting (for example, from your heating or cooling system, it 's almost human. Nonalkaline batteries do not last as two degrees Fahrenheit.
Common household thermometers and standard thermostats sense only air temperature, which may not reflect...
Owner's Manual - Page 47
... pump Operating Instructions or call your local heat pump dealer or Energy Utility for cool- Heat Pump Fault Monitor LED is coming from the registers. Wait a minute after seeing the
or
and then check the registers.
Ht setting (heat pump only). is lit, but no warm or cool air is lighted. Troubleshooting. (Continued)
Possible...
Owner's Manual - Page 48
....
If the thermostat displays PrE, wait until DONE is still running.
Contact installer or service technician. To cancel, press and hold Run Program for outdoor temperature when filter expiration shows on display.
If PrE does not display, contact your local heating contractor or Energy Utility. Outdoor temperature is not displayed or is complete. Troubleshooting. (Continued...
Owner's Manual - Page 49
... for the programmed period. To disable Adaptive Intelligent Recovery™ control, contact you local Heating and Air Conditioning contractor.
49
69-1538 Troubleshooting. (Continued)
Symptom
Possible Cause
Action
1COM is on.
See Adaptive Intelligent Recovery™ control section.
Adaptive Intelligent Recovery™ control brings the heat or cool on before programmed time...
Owner's Manual - Page 52
www.honeywell.com/yourhome 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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