Honeywell T8665A Support Question
Honeywell T8665A Support Question
Find answers below for this question about Honeywell T8665A.Need a Honeywell T8665A manual? We have 1 online manual for this item!
Question posted by keithbradburd on January 1st, 2017
Vacation Mode
We are trying to set this thermostat for a vacation mode heat setting at 55 , for 90 days. We tried this a week ago, but came into the house with the heat at 68.We used the manual and used the directions in the manual for vacation mode.Model # T 8665A
Current Answers
Answer #1: Posted by Odin on January 1st, 2017 6:04 PM
Odin
Member since:
April 10th, 2010 Points: 41,236,690
Member since:
April 10th, 2010 Points: 41,236,690
If you told us exactly what you did, we very likely could tell you what if anything you were doing wrong--but as an independent help site, we can't improve on the instructions Honeywell gave you. So at this point I can only suggest two options: (1) Resubmit, telling us in detail how you made your attempt, or (2) phone Honeywell to get a walk-through--use the contact information here--https://www.contacthelp.com/honeywell/customer-service.. If Honeywell's phone walk-through doesn't solve, then your machine is defective and should if possible be returned to the retailer or to Epson.
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
Related 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
... Savings ...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...
Owner's Manual - Page 4
... (Cont)
Using the (Information) Key ...23 Display Current Setting ...23 Display 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...
Owner's Manual - Page 5
USING THIS GUIDE
The T8665A is used in single or multi-zone applications. The following symbols will help you see this symbol.
5
69-1536-3
These features are available when more than one thermostat is a multi-functional thermostat. ZONING
60 70 80 90
60 70 80 90
- Tip symbol. This means it can be used with the word, zoning, below...
Owner's Manual - Page 6
... in any key to activate).
• Programmable Fan - Set the temperature higher or lower for energy savings while on demand (press any programming period for added comfort and energy savings. At the same time, set the thermostat higher or lower indefinitely.
• Vacation mode (1 to 255 days) for improved air circulation and air cleaning when a Honeywell...
Owner's Manual - Page 8
... RETURNS THERMOSTAT TO NORMAL OPERATING MODE
DAY SETS DAY OF THE WEEK
Run Program
Set Current Day/Time
Time
Wake
Set Program
Leave
Return
Sleep
HOLD TEMP SETS A HOLD TEMPERATURE SETTING AND ACTIVATES VACATION HOLD FEATURE
DAYLIGHT TIME SELECTS STANDARD TIME OR DAYLIGHT SAVING TIME
Hold Temp
Day
Daylight Time
Heat/Cool Settings
Copy
System
Fan
COPY COPIES SETTINGS FROM ONE DAY TO...
Owner's Manual - Page 9
... PROCESSING INFORMATION AND WAITING TO CALL FOR HEAT OR COOL
SHOWS WHEN THERMOSTAT IS IN THE PROGRAMMING MODE
SHOWS THERMOSTAT IS IN THE SET CURRENT DAY/TIME MODE
SHOWS ADAPTIVE INTELLIGENT RECOVERYTM
IS CHANGING THE TEMPERATURE TO MEET THE CURRENT PROGRAM
Wait Set Program Set Day/Time
Recovery
AM
Temporary
SHOWS VACATION HOLD DURATION
SHOWS FILTER TIMER STATUS
Hold for
Filter...
Owner's Manual - Page 10
... temperature, wall temperature, and the time you want to you . Recovery
AM
System Heat
Fan
Mon
Room
Sleep
Heat
Auto
M20148
Fig. 3. Your new thermostat reads both the temperature of "Recovery" indication.
10
69-1536-3
Common household thermometers and standard thermostats sense only air temperature, which may not reflect how hot or cold the...
Owner's Manual - Page 12
... 6:00 AM Recovery Continues
Recovery
AM
Mon
Room
Sleep
System Heat
1
Fan Auto
At 7:00 AM System Operating in Comfort Mode
System Heat
AM
Mon Wake
Room
Fan Auto
System Heat
Fan Auto
ENERGY SAVINGS PERIOD
RECOVERY FROM ENERGY SAVINGS
TIME
COMFORT PERIOD
THE THERMOSTAT USES THE SAME SCHEME TO RETURN GRADUALLY TO LOWER COMFORT TEMPERATURE...
Owner's Manual - Page 13
... wondering how to hold the thermostat at a specific temperature while you comfortable at the same time. First, let's look at features you'll be using often, like setting the System and Fan keys, how to override the current programming mode or to program your last day of vacation so you are away. Setting System and Fan Keys...
Owner's Manual - Page 14
...-1536-3 System
Heat: The thermostat controls the heating. Thermostat will satisfy zone 2
before initiating the fan call basis.
For example, if
zone 2 (any zone) asks for zone 1. Cool: The thermostat controls the cooling. the system will satisfy system demand
on the indoor temperature. Setting the System Key
Press the System key until the desired mode
(On or...
Owner's Manual - Page 17
... ▲ or decrease ▼ to cancel hold.
Press Hold Temp key once. Hold Temp
Setting
System Heat
2. Example display shows temporary heat setting of 60°. Fan
NOTE: The display changes from the setpoint to display the thermostat in Hold mode. Heat
Auto M14565
Press Hold Temp key once to the room temperature after approximately three seconds...
Owner's Manual - Page 18
... zone system, set all thermostats independently to Vacation Hold. Hold Temp
Wake
Heat
Auto
IMPORTANT To cancel the Vacation Hold before the designated time, press Run Program key. Example display shows 18 vacation days.
18
69-1536-3 Press Hold Temp key twice. Changing Temperature Setting Until a Designated Day and Period (Vacation Hold)
ZONING
When setting Vacation Hold in Vacation mode...
Owner's Manual - Page 19
... to Heat. Auto M14571
Setting
System Heat
Hold for
Days
Fan
Return
Heat
In this example, the Hold ends after the 18th day at the beginning of 55
Auto M14572
19
69-1536-3
Press Wake, Leave, Return or Sleep key to adjust the temperature setting, if desired. Example display
shows temporary heat setting of the Return period.
The thermostat uses both the heating...
Owner's Manual - Page 20
...? Run
You can always press Program to return display to change between heat and cool settings. To cancel the Vacation Hold before the designated time, press Run Program key at 84°, cooling equipment operates when the room temperature is set at each thermostat. Don't worry!
5. Press increase ▲ or decrease ▼ to start over...
Owner's Manual - Page 22
...of removing the old batteries, the system retains the current time and day.
2. If the display is blank, the batteries are dead or installed...Setting the Clock section for
60 70 80 90
60 70 80 90
longer than a month, change batteries
before leaving to prevent the system from
shutting down due to the thermostat and the
wall surface. Always use fresh alkaline batteries. Remove the thermostat...
Owner's Manual - Page 24
... i key several times.
Filter
Days
M20244
24
69-1536-3 Reset the timer by pressing the i key three or four times.
Note: You can view the number of days remaining at www.honeywell.com/yourhome or call 1-800-4681502. Display or Reset Filter Timer Settings
When the thermostat activates a timer, the thermostat flashes Filter until the...
Owner's Manual - Page 26
Tue
Set Day/Time PM
3.
Set Current
60 70 80 90
Day/Time
Set Day/Time AM
4. 2. Run Program
26
Tue
M14582
Press Time or Time key to normal operation. Day
Mon = Monday, Tue = Tuesday, Wed = Wednesday,
60 70 80 90
Thu = Thursday, Fri = Friday, Sat = Saturday,
60 70 80 90
Sun = Sunday.
Example display shows Tuesday. Press Time or Time...
Owner's Manual - Page 36
... 80 90 already in the program mode (set program displays in the program mode to use the copy feature. Wake
Leave
Return
Sleep
2. Example display shows the thermostat in program
mode with Monday ready to be in the upper left corner).
1. Go to enter program mode. Press Day key to select the day to copy. Day
Set Program AM
Setting
System Heat
Mon Wake
Heat...
Owner's Manual - Page 39
... mode. Day
Set Program AM
Setting
System Heat
Mon Leave
Heat
Fan On
M14597
Press Leave, Return, or Sleep to enter program
mode. Leave
Return
Sleep
2. Clearing a Program Period
The thermostat must be in the program mode
60 70 80 90
to begin clearing the periods. Set Program AM
Setting
System Heat
Sat Leave
Heat
Fan On
M14598
Press Day key to select the day to use...
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