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Most Recent Honeywell T8665A Questions
Vacation Mode
We are trying to set this thermostat for a vacation mode heat setting at 55 , for 90 days. We tried ...
We are trying to set this thermostat for a vacation mode heat setting at 55 , for 90 days. We tried ...
(Posted by keithbradburd 7 years ago)
Popular Honeywell T8665A Manual Pages
Owner's Manual - Page 1
T8665A Chronotherm® IV Wireless Thermostat
USER'S GUIDE
1
6699--11553366--33
Owner's Manual - Page 3
......11
OPERATING YOUR THERMOSTAT ...13 Setting System and Fan Keys ...13
Setting the System Key ...14 Setting the Fan Key ...14 Setting Temporary Temperatures ...15 Changing Temperature to Temporary Setting Until Next Schedule Period 15 Changing and Holding Temperature Setting Indefinitely 17 Changing Temperature Setting Until a Designated Day and Period (Vacation Hold 18 Replacing the Batteries...
Owner's Manual - Page 4
... or Reset Filter Timer Settings ...24
SETTING THE CLOCK ...25 Set Current Day and Time ...25 Daylight Saving Time ...27
PROGRAMMING YOUR THERMOSTAT ...28 7-Day Program and Operation ...28
7-Day Preprogrammed Schedule ...29 Customizing Your Own 7-Day Schedule ...30 Programming the First Day ...31 Copying a Day ...36 Clearing a Program Period ...39
TROUBLESHOOTING ...41
WARRANTY ...43...
Owner's Manual - Page 5
USING THIS GUIDE
The T8665A is used in single or multi-zone applications. Triple layer of thermostats with the W8665E RF ZoneTM Panel. This means it can be used with the word, zoning, below. The following symbols will help you see this symbol.
5
69-1536-3 Tip symbol. Look for helpful tips throughout the guide when...
Owner's Manual - Page 6
... for energy savings while on demand (press any programming period for improved air circulation and air cleaning when a Honeywell wholehouse air cleaner is installed.
6
69-1536-3 backlighting on vacation. At the same time, set the thermostat higher or lower indefinitely.
• Vacation mode (1 to see the current setpoints.
• Daylight Time key for quick...
Owner's Manual - Page 9
... STATUS
Hold for
Filter
Days
MonTueWedThuFriSatSun
Room
Wake Leave Return Sleep DST
SHOWS TEMPERATURE SETTING CHANGED FOR THIS PROGRAM PERIOD
Setting
System
Heat
Off Cool Auto Fan On Auto
SHOWS TEMPERATURE DISPLAYED IS THE CURRENT SET TEMPERATURE
SHOWS THAT THERMOSTAT IS CALLING FOR
SHOWS CURRENT SYSTEM KEY POSITION HEAT/OFF/COOL
SHOWS CURRENT FAN...
Owner's Manual - Page 10
... as slight as one degree Fahrenheit, so room temperature is reached without overshooting the setting. The system runs until the comfort temperature you choose is more likely to feel differences in recovery? ADAPTIVE INTELLIGENT RECOVERYTM CONTROL
Your new thermostat is so smart, it considers air temperature, wall temperature, and the time you...
Owner's Manual - Page 13
... vacation so you are away. CAUTION
Equipment Damage Hazard. See equipment manufacturer instructions.
13
69-1536-3 Setting System and Fan Keys
Use the System and Fan keys to use some ... the compressor to hold the thermostat at a specific temperature while you comfortable at features you are comfortable when you return and yet save energy while you 'll be set for all the schedule periods....
Owner's Manual - Page 14
... operates only when heating
or cooling. Off: Both the heating and cooling are off. Setting the System Key
Press the System key until the desired mode
(On or Auto) displays:
Fan
On: Fan operates continuously.
NOTE: The thermostat may delay
turning on the fan until another zone
ZONING
has completed its call...
Owner's Manual - Page 17
... Heat
2.
Run Program
17
69-1536-3
Press increase ▲ or decrease ▼ to the room temperature after approximately three seconds. Example display shows temporary heat setting of 60°. Heat
Auto M14565
Press Hold Temp key once to cancel hold.
ture setpoint, if desired. Press Run Program key to display the...
Owner's Manual - Page 19
... the heating temperature is used when the System is set to Cool. The thermostat uses both the heating and cooling temperatures when the System is set to Heat.
Similarly, only the cooling temperature is used when the System is set to select a new Hold temperature. Setting
System Heat
Hold for
Days
Fan
Return
Heat
Press...
Owner's Manual - Page 20
Press Heat/Cool Settings key to start over? To cancel the Vacation Hold before the designated time, press Run ...or decrease ▼ to normal.
20
69-1536-3 Don't worry! Want to change between heat and cool settings. Heat/Cool Settings
6. Run
You can always press Program to return display to adjust the temperature setting, if desired (for example, if cool is set at each thermostat. 5.
Owner's Manual - Page 22
... from
shutting down due to Setting the Clock section for instructions. Nonalkaline batteries do not last as shown. Always use fresh alkaline batteries.
2. Refer to lack of removing the old batteries, the system retains the current time and day.
Honeywell recommends Energizer®
batteries.
22
69-1536-3 Remove the thermostat by placing your thumb...
Owner's Manual - Page 24
... by pressing the i key three or four times. Display or Reset Filter Timer Settings
When the thermostat activates a timer, the thermostat flashes Filter until the expired timer is displayed. If more than one timer is not currently activated, check the Installation Instructions at any time by pressing the i key until the timer resets.
1.
Filter
Days...
Owner's Manual - Page 45
CUSTOMER ASSISTANCE
After reading this guide, if you have any questions about the operation of your local heating and cooling contractor.
45
69-1536-3 For service, contact your thermostat, please contact the Honeywell Customer Relations at www.honeywell.com/yourhome or 1-800-468-1502.
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