Honeywell T8000 User manual

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OWNER’S GUIDE
T8000, T8001,T8002, T8011, T8024
Programmable Thermostats
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2
Welcome to the world of comfort and energy
savings with your new Honeywell program-
mable thermostat.
Your new programmable thermostat is designed
to provide you with reliable, precise temperature
control. When you follow the simple program-
ming instructions in this manual, your thermostat
automatically controls the temperature in your
home, saving energy and allowing you to awake
(or return home) to a comfortable level of heating
or air conditioning.
If you have questions, visit our web site at
www.honeywell.com/yourhome, or call the
customer information line at 1-800-468-1502.
Features
•Program up to four time periods with
temperature settings to complement
your lifestyle.
•Set different schedules for weekdays and
weekend.
•Programs permanently held in nonvolatile
memory in event of power failure.
•Indefinite temperature hold.
•Preprogrammed for your convenience.
•Backlit display (select models).

369-1431–1
Contents
Features .......................................................................................................................................... 2
Key Locations and Descriptions...................................................................................................... 4
Planning Program Schedule ........................................................................................................... 5
Program Schedule...................................................................................................................... 6
Programming Thermostat ............................................................................................................... 7
Setting Current Time and Day ....................................................................................................8
Setting Weekday Program.......................................................................................................... 9
Setting Weekend Program .........................................................................................................10
Setting Temporary Temperature Hold ......................................................................................... 13
Setting Indefinite Temperature Hold ........................................................................................... 13
Operating Thermostat ..................................................................................................................... 13
Setting SYSTEM and FAN Switches .......................................................................................... 13
Replace the Batteries (T8002 Only)........................................................................................ 14
Backlighting (Select Models)................................................................................................... 14
Minimum Off-Timing ........................................................................................................................ 15
Troubleshooting .............................................................................................................................. 16
Customer Assistance ...................................................................................................................... 19
Warranty.......................................................................................................................................... 20

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4
Key Locations and Descriptions
SYSTEM
Cool Off Heat
Auto On
FAN
Hold
Select
TUE
PM
M14673
HOLD KEY
• SET TEMPORARY TEMPERATURE HOLD.
HOLD KEY
• SET TEMPORARY TEMPERATURE HOLD.
INCREASE ▲ KEY
• PROGRAM TIME AND TEMPERATURE.
• SET TEMPORARY TEMPERATURE HOLD
.
INCREASE ▲ KEY
SELECT KEY
• CURRENT SETPOINT.
• CHANGE DAY AND TIME.
• PROGRAM SELECTIONS.
SELECT KEY
• CURRENT SETPOINT.
• CHANGE DAY AND TIME.
• PROGRAM SELECTIONS.
SYSTEM SWITCH
SYSTEM SWITCH
FAN SWITCH
FAN SWITCH BATTERY
DOOR
DECREASE ▼KEY
• PROGRAM TIME AND TEMPERATURE.
• SET TEMPORARY TEMPERATURE HOLD.
SYSTEM
Cool Off Heat
Auto On
FAN
Hold
Select
TUE
PM
• PROGRAM TIME AND TEMPERATURE.
• SET TEMPORARY TEMPERATURE
HOLD.
T8000,T8001
T8011,T8024
MODELS T8002 MODEL

569-1431–1
Planning Program Schedule
The thermostat display shows day, time,
program period, and temperature.
The thermostat can be set for four time
periods per day for weekdays and weekend.
Before programming the thermostat, you can
use the program schedule to plan your
program.
Fill in the weekday and weekend times and
temperatures you desire. If you decide not to
program the thermostat, it uses the
preprogrammed time and temperature settings
inTable1.
Table 1. Preprogrammed Time
and Temperature Settings.
Period Time Heat Setpoint Cool Setpoint
Wake 6:00 AM 70°F
(21°C) 78°F (26°C)
Leave 8:00 AM 62°F
(17°C) 85°F (29°C)
Return 6:00 PM 70°F
(21°C) 78°F (26°C)
Sleep 10:00PM 62°F
(17°C) 82°F (28°C)

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Program Schedule
Weekday Start Time Heating Temperature Cooling Temperature
Wake ________ ________ ________
Leave ________ ________ ________
Return ________ ________ ________
Sleep ________ ________ ________
Weekend Start Time Heating Temperature Cooling Temperature
Wake ________ ________ ________
Leave ________ ________ ________
Return ________ ________ ________
Sleep ________ ________ ________
Wake and Return start times should include extra lead time, based on outside temperature and
equipment response time, to give your equipment a head start to heat or cool the house. The
temperatures cannot be set any higher than 99°F (37°C) or any lower than 40°F (4°C).

769-1431–1
Programming Thermostat
The thermostat is flexible and can be program-
med for different schedules for weekdays and the
weekend to meet your lifestyle needs.
Use the personal Program Schedule for planning
your time and temperature settings for various
times of the day.
Four time periods are available during weekdays
and the weekend—Wake, Leave, Return, and
Sleep.
Wake is the time the thermostat turns on the
heating/cooling equipment after an energy
saving period. When deciding what time to
set for your Wake period, include extra
lead time, depending on the outside temp-
erature and your equipment response
time, to give the equipment a head start to
heat or cool the house before you get up.
(This will be a higher temperature during
heating season, and a lower temperature
during cooling season.)
Leave is the time period you can set for an
energy-saving temperature while you are
away at work or school. (This will be a
lower temperature during heating season,
and a higher temperature during cooling
season.)
Return is the time the thermostat turns on the
heating/cooling equipment after an energy
saving period. When deciding what time to
set for your Return period, include extra
lead time, depending on the outside temp-
erature and your equipment response time,
to give the equipment a head start to heat
or cool the house before you arrive home.

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8
Sleep is the time period you can set for an
energy-saving temperature while you are
sleeping. (For more comfortable sleep-
ing, some people choose not to raise the
cool temperature during the night.)
IMPORTANT
Always press the keys with your
fingertip or similar blunt tool. Sharp
instruments like pens and pencil
points can damage the keyboard.
Setting Current Time and Day
1. To set current time, press Select twice.
Press ▲ or ▼
to set current
time.
While setting the current time, the word SET is
displayed.
2. To set day of week, press Select again.
Press ▲ or ▼
to set current
day.
To use the preprogrammed time and tempera-
ture (see Table 1), press Hold to exit the
programming mode.
M12591
A
SET
PM
M1853
4
SET

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Setting Weekday Program
Slide the SYSTEM switch to the position, Heat
or Cool, you want to program. A flame (heat-
ing) or a snowflake (cooling) appears in the
right side of the display, when setting the
program temperature.
3. Wake
a. Press Select. Press ▲ or ▼to set
Wake
time.
b. Press Select. Press ▲ or ▼to set
Wake
temp-
erature.
4. Leave
a. Press Select. Press ▲ or ▼to set
Leave
time.
b. Press Select. Press ▲ or ▼to set
Leave
temp-
erature.
5. Return
a. Press Select. Press ▲ or ▼to set
Return
time.
M1857
0
SET
M12625
C
SET
M1856
6
SET
M12627
B
SET
M1856
7
SET

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b. Press Select. Press ▲ or ▼to set
Return
temp-
erature.
6. Sleep
a. Press Select. Press ▲ or ▼to set
Sleep
time.
b. Press Select. Press ▲ or ▼to set
Sleep
temp-
erature.
Setting Weekend Program
7. Wake
a. Press Select. Press ▲ or ▼to set
Wake
time.
b. Press Select. Press ▲ or ▼to set
Wake
temp-
erature.
M12629
B
SET
M1856
8
SET
M12631
C
SET
M1856
9
SET
M12633
C
SET

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8. Leave
a. Press Select. Press ▲ or ▼to set
Leave
time.
b. Press Select. Press ▲ or ▼to set
Leave
temp-
erature.
9. Return
a. Press Select. Press ▲ or ▼to set
Return
time.
b. Press Select. Press ▲ or ▼to set
Return
temp-
erature.
10. Sleep
a. Press Select. Press ▲ or ▼to set
Sleep
time.
b. Press Select. Press ▲ or ▼to set
Sleep
temp-
erature.
M12637
B
SET
M1855
0
SET
M1855
4
SET
M12635
B
SET
M12639
C
SET
M1855
2
SET

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11. Press Select. End is displayed. Program-
ming is complete. The thermostat reverts
to displaying
the current
day time and
temperature in
five seconds.
Setting Temporary Temperature Hold
1. Press ▲ or ▼key to set a temporary
temperature
setting.
NOTE: The temporary temperature setting
remains in effect until the next program
period. To cancel, press Hold twice.
Setting Indefinite Temperature Hold
The Hold key allows you to indefinitely hold a
temperature. When Hold is active, the letters
Hld are displayed continuously. Hold can be
canceled by pressing the Hold key again.
1. Press Hold
2. Press ▲ or ▼ key to set indefinite
temperature
setting.
M12640
A
TEMPORARY
WED
PM
M12641
A
M1855
6
SET

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Operating Thermostat
Setting SYSTEM and FAN Switches
Use the SYSTEM and FAN switches to control
thermostat operation.
SYSTEM settings:
Cool: The thermostat controls the cooling.
Off: Both the heating and cooling are off.
Heat: The thermostat controls the heating.
Em. Ht. (heat pump models only): The
thermostat cycles emergency heat relay
(E) and cycles auxiliary heat (W2), as
needed, to maintain setpoint. Terminal L is
energized continuously (fault heat relay is
on continuously). Compressor is de-
energized.
Slide the SYSTEM switch in the lower right
corner of the thermostat to select the desired
system setting.
FAN settings:
Auto: Fan operates with equipment.
On: Fan operates continuously.
Slide the FAN switch in the lower left corner of
the thermostat to select the desired fan setting.
Heat and Cool Indicators:
Indicates a call for heat.
Indicates a call for cool.
NOTE: In the programming mode, the
and indicate system setting.

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Back Lighting (Select Models)
Any key pressed lights the display for approxi-
mately ten seconds.
Replacing the Batteries
(T8002 Models Only)
The T8002 Thermostat requires three AA
alkaline batteries to operate.
As the batteries run low, your thermostat
shows a "bAt Lo" message in the digital
display. The message flashes for one to two
months before the batteries run out completely.
Replace the batteries as soon as possible after
the message flashes.
The batteries are located on the right side of
the thermostat. Open the battery door from the
bottom, lifting out.
If you insert the batteries within approximately
30 seconds of removing the old batteries, the
thermosat retains the current time and day. If
the display is blank when changing batteries,
reset the time and day. Your program does not
require resetting; it is stored permanently!
Important: Even if you do not see the "bAt Lo"
message, replace the batteries once a year to
prevent leakage and/or the heating/cooling
system from shutting down due to lack of
battey power.

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The minimum off-timer operates in cooling on
the T8000 and T8001, T8002, T8024 (multi-
stage model) and in first stage heating or
cooling on the T8011 (heat pump model). A
flashing flame or snowflake indicates the
minimum off-time is in effect.
Minimum Off-Timing
The thermostat minimum off-timer assures that
the compressor does not come on again for at
least five minutes after it turns off. The minimum
off-timer is triggered when the compressor turns
off and when the SYSTEM switch position is
changed. If the compressor turns off when the
setpoint is changed, the minimum off-timer is
triggered. Power interruption and power
restoration also trigger the minimum off-timer.

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Troubleshooting
continued
Symptom Action
Display does not come on. •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.
•Check if the fuse is blown—replace the fuse.
•Check if the switch at the equipment is in the Off
position—set to the On position.
• Check if the batteries are good and installed correctly
(T8002 only).
Temperature settings do not
change (example: cannot set the
heating higher or the cooling
lower).
•Check that the temperature setpoints are: between
40 to 99°F (4 to 37°C).

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Troubleshooting (Continued).
continued
Symptom Action
Heating does not come on. • Check if the circuit breaker is tripped—reset the
circuit breaker.
•Check if the fuse is blown—replace the fuse.
•Check if the switch at the equipment is in the Off
position—set to On position.
•Wait five minutes for the system to respond.
•Set SYSTEM switch to Heat.
• If the temperature setting is higher than the current room
temperature and the flame is displaying, the
thermostat is operating correctly. Contact a heating
contractor for assistance.

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Troubleshooting (Continued).
continued
Symptom Action
Cooling does not come on. • Check if the circuit breaker is tripped—reset the
circuit breaker.
•Check if the fuse is blown—replace the fuse.
•Check if the switch at the equipment is in the Off
position—set to On position.
•Wait five minutes for the system to respond.
•Set SYSTEM switch to Cool.
• If the temperature setting is lower than the current room
temperature and the snowflake is displaying, the
thermostat is operating correctly. Contact an air
conditioning contractor for assistance.

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Symptom Action
System on indicator
or is lit, but no warm
or cool air is coming from the
registers.
Wait a couple minutes after seeing the flame or
snowflake and then check the registers.
System on indicator
or is flashing. Minimum off-timer is in effect. Wait five minutes until
the minimum off-timer is complete.
Troubleshooting (Continued).
Customer Assistance
If you have any questions concerning the operation of your thermostat, please visit us at www.honeywell.com or
call the thermostat information helpline at 1-800-468-1502.

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20
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 defective or malfunctions, Honeywell shall repair or replace it (at
Honeywell’s option) within a reasonable period of time.
If the product is defective,
(i) return it, with a bill of sale or other dated proof of purchase, to the retailer from which you purchased it, or
(ii) package it carefully, along with proof of purchase (including date of purchase) and a short description of
the malfunction, and mail it, postage prepaid, to the following address:
Honeywell Return Goods
Dock 4 MN10-3860
1885 Douglas Drive North
Golden Valley, MN 55422
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 which occurred while the product was in the
possession of a consumer.