User Manual
THR872CUK Wireless
Programmable Thermostat
50051985-001 Rev. A
Contents
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
WARNING: This product must be correctly installed and configured to work properly (see
pages 20-31). If you are not experienced in wiring electrical equipment, we recommend
professional installation to avoid possible personal injury or equipment damage.
TIP: After installation, see the QUICK START GUIDE on page 7 to customise and begin using
your new thermostat right away.
®
homexperttm by Honeywell is a trademark of Honeywell International Inc. All rights reserved.
Copyright © 2010 Honeywell International Inc.
About your new thermostat
What is a programmable thermostat? ....4-5
Features ................................................... 6
QUICK START GUIDE ............................. 7
Quick reference to controls .......................8
Date/time settings ....................................9
Operation and programming
Heating and cooling control .................... 10
Operating modes ....................................11
Cost-saving program schedules ............. 12
To adjust program schedules .................. 13
To add or remove program time periods ....14
Special functions
Temporary schedule overrides ................15
Day Off mode ......................................... 16
Party mode .............................................17
Holiday mode ......................................... 18
Advanced features ..................................19
Installation and setup
System installation .................................. 20
Wireless relay box installation ..................21
System wiring ....................................22-23
Thermostat installation .......................24-25
System test ............................................ 26
Installer setup ....................................27-31
Appendix
In case of difficulty .............................32-33
Warranty information ...............................34
Declarations, disposal & recycling ........... 35
NOTE: This symbol will flash on the screen
when battery power is low. Remove cover as
shown on page 24 and replace batteries with
two fresh AA alkaline batteries.
3
User Manual
What is a programmable room thermostat?
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
...an explanation for householders
A programmable room thermostat is both a programmer and a room thermostat.
A programmer allows you to set ‘On’ and ‘Off’ time periods to suit your own lifestyle. A
room thermostat works by sensing the air temperature, switching on the heating when
the air temperature falls below the thermostat setting, and switching it off once this set
temperature has been reached.
So, a programmable room thermostat lets you choose what times you want the heating
to be on, and what temperature it should reach while it is on. It will allow you to select different temperatures in
your home at different times of the day (and days of the week) to meet your particular needs.
Turning a programmable room thermostat to a higher setting will not make the room heat up any faster. How
quickly the room heats up depends on the design of the heating system, for example, the size of boiler and
radiators.
Neither does the setting affect how quickly the room cools down. Turning a programmable room thermostat to
a lower setting will result in the room being controlled at a lower temperature, and saves energy.
The way to set and use your programmable room thermostat is to find the lowest temperature settings that
you are comfortable with at the different times you have chosen, and then leave it alone to do its job. The best
4
way to do this is to set low temperatures first, say 18°C, and then turn them up by one degree each day until
you are comfortable with the temperatures. You won’t have to adjust the thermostat further. Any adjustments
above these settings will waste energy and cost you more money.
If your heating system is a boiler with radiators, there will usually be only one programmable room thermostat
to control the whole house. But you can have different temperatures in individual rooms by installing
thermostatic radiator valves (TRVs) on individual radiators. If you don’t have TRVs, you should choose a
temperature that is reasonable for the whole house. If you do have TRVs, you can choose a slightly higher
setting to make sure that even the coldest room is comfortable, then prevent any overheating in other rooms
by adjusting the TRVs.
The time on the programmer must be correct. Some types have to be adjusted in spring and autumn at the
changes between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating programme, for example, ‘Override’, ‘Advance’ or ‘Boost’.
These are explained in the manufacturer’s instructions.
Programmable room thermostats need a free flow of air to sense the temperature, so they must not be
covered by curtains or blocked by furniture. Nearby electric fires, televisions, wall or table lamps may prevent
the thermostat from working properly.
5
User Manual
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
QUICK START GUIDEAbout your new wireless thermostat
The THR872CUK is an easy-to-use thermostat designed to maintain a comfortable environment when you are
at home and reduce energy costs when you are away.
Features
• Energy-saving design: Automatically adjusts indoor temperature up to six times per day to maintain
optimum comfort when you’re at home, and reduce costs during working hours when you are away. Each
day of the week can be programmed separately (see pages 12-13).
• One-touch comfort control: Allows you to override programmed settings at any time by setting the
indoor temperature manually (see page 15).
• Day Off button: Sets the system to your preferred Sunday program on any day of the week to maintain a
comfortable environment when you stay home from work (see page 16).
• Party button: Temporarily overrides the normal program schedule for 1 to 23 hours to maintain a
comfortable temperature while you are entertaining guests (see page 17).
• Holiday button: Maintains a cost-saving temperature level for up to 99 days while you are away, then
resumes normal operation when you return (see page 18).
• Summer/Winter time change: Automatically adjusts the clock for standard time or daylight savings time.
• Optimum Start: Automatically turns on heating system as early as needed so indoor temperature reaches
the level you want at the time you set.
6
Your new thermostat is pre-programmed and ready to go. Just check the steps below and change
settings if needed:
1 Install and set up thermostat & relay box
(if this has not been done by a professional installer) ..........................................................See pages 20-31
2 Select heating (default) or cooling mode ................................................................................... See page 10
3 Customise heating and cooling program settings if necessary .................................................. See page 13
Display screen options: To change the date, time or display screen language, see pages 9 and 28.
7
User Manual
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Date/time settingsQuick reference
Press to set time
(see page 9)
Press to set date/day
(see page 9)
Press to copy a daily
program schedule
(see page 13)
“Day Off” button
(see page 16)
“Party” button
(see page 17)
“Holiday” button
(see page 18)
Current
time
Battery compartment
(see page 24)
Current
day/date
Heating system
is on
Low battery
warning
Thu 30/12/10
PM
12:34
Room Temp
Press to change program
schedules (see page 13)
°
23.5
AUTO MAN OFF
“OK” button
8
Current room
temperature
Status text
Press to change
temperature
(see page 15)
Press to check target
temperature
(see page 15)
Operating modes
(see page 11)
Automatic
Manual
Off
Remove cover to use
controls
Day Month Year
29/12/10
SET THE DAY
30/12/10
Day OK?
30/12/10
Set the month
Press the DAY button to set the date and time.
Use the + or - buttons to set the correct day, then press the OK
button. Follow the same procedure to set month, year and time. On
completion, the screen will display “Changes saved.”
Date and time should not need to be changed if set properly during
initial installation (see page 24).
NOTE: To adjust only the time, press the + or - button. It is not
necessary to press the DAY button.
9
Operation and Programming
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Heating or cooling control
Press and hold both buttons for 5 seconds
Thu 30/12/10
23.5
23.5
°
°
PM
12:34
Room Temp
Heating changes to cooling
Thu 30/12/10
PM
12:34
Cooling
The thermostat is pre-set to control only your heating system. If
installed and set up correctly, it can also be used to control your
cooling system.
To switch between heating and cooling, press and hold the p and q
buttons until the screen changes.
NOTE: The thermostat will not switch to cooling control unless you
enable this feature (see pages 30-31).
NOTE: Program schedules for heating and cooling must be set
separately (see page 13).
10
Operating modes (auto, manual, off)
Auto: Program controls temperature
Thu 30/12/10
PM
12:34
Manual: Press p/q to set temperature
Thu 30/12/10
12:34
21.0
Room Temp
AUTO MAN OFF
PM
23.5
Room Temp
AUTO MAN OFF
°
°
Press the mode buttons to select how the thermostat operates:
Auto: In this mode the thermostat follows a program
schedule to maintain a comfortable temperature when you
are home and reduce energy costs while you are away (see
pages 12-13).
Manual: This mode turns off the program schedule to
maintain a constant temperature. Press the p or q
buttons to set the temperature you want. The temperature
will remain at the level you set until you change it, or until
you press AUTO to resume the program schedule.
Off: When the thermostat is off, the heating system runs
only as needed to maintain a minimum temperature to
protect your home. This level is set at 5°C, but you can
change it if necessary (see page 28).
NOTE: You can press any of these buttons — Auto, Manual or Off —
to cancel any programming task and exit without saving changes.
11
Operation and Programming
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Default program schedules
This thermostat is pre-set to maintain a comfortable temperature when you are at home, and energy-saving
levels when you are away or asleep. The default program schedules are shown below. To change them, see
pages 13-18.
Monday-Friday Period 1 2 3 4 5 6
Time
HEATINGCOOLING
Temperature
Saturday-Sunday 1 2 3 4 5 6
Time
Temperature
Monday-Friday Period 1 2 3 4 5 6
Time
Temperature
Saturday-Sunday 1 2 3 4 5 6
Time
Temperature
6:30 8:00 12:00 14:00 18:00 22:30
21°C 18°C 21°C 18°C 21°C 16°C
8:00 10:00 12:00 14:00 18:00 23:00
21°C 16°C
6:30 8:00 12:00 14:00 18:00 22:30
24°C 28°C 24°C 28°C 24°C 24°C
8:00 10:00 12:00 14:00 18:00 23:00
24°C
12
To adjust program schedules
MON
6:30
SET TIME 1
6:30
TIME 1 OK?
6:30
6:30
AM
1 2 3 4 5 6
AM
1 2 3 4 5 6
AM
1 2 3 4 5 6
AM
1 2 3 4 5 6
21.0
21.0
22.5
SET TEMP 1
22.5
TEMP 1 OK?
°
°
°
°
To customise the program schedules, first make sure the system
you want to program (heating or cooling) is selected (see page 10).
Heating and cooling schedules must be programmed separately.
1 Press <, then adjust the time and temperature for Period 1 as
shown at left.
2 Press OK to advance to the next step, or press the > button to
advance to the next time period. (See page 14 to delete unwanted
time periods.)
3 After all Monday time periods are set, press the DAY button to
customise settings for Tuesday and other days of the week.
To stop programming at any time, press any MODE button (Auto,
Manual or Off; see page 11).
SHORTCUT: While programming, press the COPY DAY button to copy
all settings for the current day and apply them to other days. For example,
you can apply Monday settings to all other days of the week. After
copying, press the DAY button to select a target day, then press OK.
13
Operation and Programming
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
To add or remove program time periods
MON
6:30
SET TIME 1
12:00
SET TIME 3
Press and hold
--:--
AM
21.0
1 2 3 4 5 6
PM
21.0
1 2 3 4 5 6
PM
--.-
DISABLED
1 2 3 4 5 6
°
°
°
You can eliminate any unwanted time periods (2 through 6) if you
require fewer than six per day.
1 Press the < or > buttons repeatedly to select a time period (or
press the DAY button to select a different day).
2 Press and hold the i button for at least two seconds to remove
the selected time period. The temperature will remain at the level
set for the previous time period until the following period begins.
To restore a disabled time period, follow the procedure above to
select the disabled period, then press and hold the i button for at
least two seconds to restore it.
Temporary schedule overrides
Current temperature
Thu 30/12/10
20.5
AUTO MAN OFF
20.5
AUTO MAN OFF
23.0
AUTO MAN OFF
°
°
°
PM
12:34
Room Temp
Desired temperature
Thu 30/12/10
PM
12:34
TARGET TEMP
Set to override present time period
Thu 30/12/10
PM
12:34
TARGET TEMP
14
When idle, the thermostat displays the current room temperature. You
can press the i button at any time to see the “target” temperature the
thermostat is trying to maintain.
Press the p or q buttons to change the temperature temporarily.
In Auto mode, the thermostat will maintain the temperature you
set until the next program time period begins. It will then revert to
the level programmed for that time period. To maintain a constant
temperature for longer periods of time, switch to Manual mode (see
page 11).
NOTE: See also temporary program overrides for holidays, parties or
days when you stay home from work (see pages 16-18).
15
Special Functions
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Temporary schedule overrides — Day Off
MON 27/12/10
DAYS
1
DAYS OFF
Set number of days off
WED 29/12/10
DAYS
3
In Day Off mode, the system runs the Sunday program schedule on
days when you stay home. The Sunday schedule should maintain a
comfortable temperature all day long (see page 12).
1 Press the DAY OFF button.
2 Press + or - to select the number of days you will stay home (up
to 99 days), then press OK to save.
After the last “day off,” the temperature will resume the normal
program schedule. To cancel the Day Off feature at any time, press
the DAY OFF button again. The “day off” symbol will disappear and
the system will resume normal operation.
DAYS OFF
NOTE: This feature works only when the thermostat is in Auto mode
(see page 11).
SUN 26/12/10
12:34
PM
ROOM TEMP
°
23.0
AUTO MAN OFF
16
Temporary schedule overrides — Party
SUN 26/12/10
1
hr
20.5
°
PARTY DURATION
Set number of hours, then press OK
SUN 26/12/10
3
hr
20.5
°
PARTY DURATION
Set desired temperature, then press OK
SUN 26/12/10
3
hr
24.0
°
The Party feature temporarily overrides the program schedule to
maintain a comfortable temperature while you entertain guests. You
can also use it to set an energy-saving temperature level if you will be
away from home for several hours.
1 Press the PARTY button.
2 Press + or - to select the number of hours (1 to 23 hours), then
press OK to save.
3 Press the p or q buttons to set the temporary temperature, then
press OK to save and exit.
When the timer expires, the temperature will revert to the previous
level (set manually, or by the program schedule if in Auto mode). To
cancel the Party mode at any time, press the PARTY button again.
NOTE: This feature works only when the thermostat is in Auto or
Manual mode (see page 11).
temp ok?
17
Special Functions
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Temporary schedule overrides — Holiday
MON 27/12/10
°
10.0
DAYS
1
RETURN DATE OK?
Set number of days, then press OK
SUN 09/01/11
°
10.0
DAYS
14
RETURN DATE OK?
Set temperature, then press OK
SUN 09/01/11
°
10.0
DAYS
14
The Holiday feature maintains a constant energy-saving temperature
while you are away for an extended time (up to 99 days).
1 Press the HOLIDAY button.
2 Press + or - to select the number of days you will be away (up to
99 days), then press OK to save.
3 Press the p or q buttons to set the temperature during your
absence, then press OK to save and exit.
To cancel the Holiday mode at any time, press the HOLIDAY button
again.
NOTE: This feature works only when the thermostat is in Auto or
Manual mode (see page 11).
TEMP OK?
18
Advanced features
• Optimum Start: This is an energy-efficient feature that adjusts the start time of your heating system. For
example, on cold days your heating system will start earlier to ensure that your home is warm when you
wake in the morning. On warmer days, heating will begin later to save energy costs. (See page 29 to turn
on this feature.)
• Summer/winter time change: The thermostat automatically changes the clock time to correspond with
changes to and from daylight savings time. (See page 28 to turn off this feature.)
• Temperature offset: In some cases, the thermostat must be installed in a location that does not
accurately control temperature for optimum comfort in other rooms. You can set the thermostat to
compensate for this by adjusting the offset (see page 29).
• Proportional band width: If your heating system is oversized for your home, you can compensate by
increasing the width of the control proportional band up to 3°C (see page 29).
• Cycle rate and minimum boiler on/off time: Adjusting these features can help your climate control
system work more efficiently for increased comfort and economy. See page 31 to find recommended
settings for your system.
19
Installation and Setup
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
System installation
Wireless
thermostat
30 metres max. distance
NOTE: If you are not experienced in equipment installation, we recommend that these
procedures be done by a professional installer.
DISCONNECT ELECTRIC POWER BEFORE INSTALLATION: Can cause electrical shock or
equipment damage.
System
wiring
Relay box
Heating/cooling systems
20
Installation procedure
1 Install relay box
2 Connect system wiring
3 Activate batteries and install
wireless thermostat
4 Setup and test system operation
Install relay box
The relay box is wired directly to your heating
or cooling equipment. The thermostat
communicates with the relay box using a
wireless RF signal to control the system. Do not
install near metal objects or electronic devices
(TV, sound system, PC, etc.).
1 Make sure electrical power is off.
2 Use a screwdriver to release latch and
remove relay box cover.
3 Mount wall bracket as shown at left. Install
at least 30 cm from any metal objects such
as metal wall boxes and metal equipment
enclosures.
4 Connect system wiring as shown on pages
22-23, then replace relay box cover.
21
Installation and Setup
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Connect system wiring
Terminal screws
1.5 - 2.5 mm
2
6 mm max.
Connect wiring from your heating or cooling
equipment to the relay box as shown at left. See
wiring diagrams on page 23 for details.
1 Make sure electrical power is off.
2 Strip insulation to expose about 6 mm of
bare wire.
3 Use a screwdriver to loosen terminal screw,
insert wire into slot, then tighten screw.
4 Replace relay box cover, then restore
electrical power.
NOTE: All wiring must comply with IEE
regulations. Keep AC mains supply/load cables
separate from equipment wiring. Refer to boiler
manufacturer’s instructions for information
about wiring connections.
22
Wiring diagrams
N L L
Wiring terminals
A B C
Burner (direct control) Combi boiler
Zone valve Cooling device
23
Installation and Setup
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Activate batteries and test thermostat
AUTOMANOFF
Remove cover and discard plastic tab
inside to activate batteries
Press OFF, then press and hold these
buttons to test
TEST TRANSMIT
Green light on
relay box should
begin flashing
Remove thermostat cover and battery compartment cover, then
discard the plastic tab inside to activate the batteries. The first time
you do this, you will be prompted to set the date, time and preferred
screen language. After this, you should check to make sure the
thermostat can communicate with the relay box.
1 Make sure electrical power is on and thermostat is set to
OFF mode (see page 11).
2 Hold the thermostat 2-3 metres from the relay box, then press
and hold the buttons shown at left until TEST TRANSMIT appears.
3 If the system is working properly, a green light on the relay box
should begin flashing. If nothing happens, or if the red light begins
flashing, see “In Case of Difficulty” on page 32.
To exit Test mode at any time, press any MODE button (Auto, Manual
or Off; see page 11).
NOTE: This symbol will flash on the screen when battery
power is low. Remove cover as shown at left and replace
batteries with two fresh AA alkaline batteries.
24
Choose location and install thermostat
Install the thermostat on a wall or table about 1.2 to
1.5 metres above the floor. To check a location, set the
thermostat to Test mode (see page 24), then check to verify
that the green light on the relay box is still flashing. If it does
not flash, find another location closer to the relay box
Wall mounting
• Donotinstallnearsourcesofhotorcoldair(radiators,
• Installatleast30cmfrommetalobjects.
• Installatleast1metreawayfromotherelectronicdevices
Table stand
assembly
windows, heating or cooling ducts).
(TV, sound system, PC, etc.).
25
Installation and Setup
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
System test
Press OFF, check heating unit
Thu 30/12/10
PM
12:34
Press MAN, set temperature to 35°C
Thu 30/12/10
12:34
Make sure heating symbol appears
Thu 30/12/10
12:34
23.5
Room Temp
AUTO MAN OFF
PM
35.0
TARGET TEMP
AUTO MAN OFF
PM
35.0
Installer setup
After installation, you should check to make sure the system is
working properly.
°
°
°
1 Press the thermostat OFF button.
2 Check the power supply to make sure the system is on and the
green light on the relay box is off.
3 Press the thermostat MAN button, then press the p button to
raise target temperature to maximum (35°C).
If the system is set up properly, the “heating” symbol should
appear on the thermostat display, the heating system should
begin running, and the green light on the relay box should be on.
You can switch between OFF and MAN several times to verify that
the system is operating properly.
4 To stop the test, press AUTO to run the program schedule, or
MAN to reset the temperature manually. (If you select Manual
control, reduce the target temperature to an appropriate level.)
26
Press and hold to enter installer mode
Press to scroll
through functions
Thu 30/12/10
PM
12:34
Room Temp
1:CL
1 2
See tables on pages 28-30 for
complete list of functions and settings
°
23.5
AUTO MAN OFF
12
CLOCK SELECT
Press to change
setting
Installer settings allow you to customise how your system
works. Check the tables on pages 28-31 to see if any settings
need to be changed.
To change installer settings:
1 Press the thermostat OFF button.
2 Press and hold the i, < and > buttons until the screen
changes.
3 Press the + or - button to scroll through functions quickly
until you find one you want to change.
4 Press the p or q buttons to change any setting, then
press OK to save the new setting.
To exit installer setup, press any MODE button (Auto,
Manual or Off).
27
Installation and Setup
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Installer setup functions — Thermostat settings
** Factory default setting ** Factory default setting
Function Description Setting Options
1: CL Clock format 24: 24-hour time format **
12: AM/PM 12-hour time format
2: rP Reset program schedule 0: Schedule customised by user
1: Reset schedule to factory default (see page 12) **
3: tC Summer/winter time change 0: No change
1: Automatically switch to/from daylight savings time **
4: LA Display screen language Default language varies by location of purchase. Press the
p or q buttons to select an alternate language.
5: bL Screen backlight 0: Off
1: Screen lit when button is pressed **
6: uL Maximum temperature allowed 35°C **
Options: 21° to 35°C
7: LL Minimum temperature allowed 5°C **
Options: 5° to 21°C
See page 27 to change these settings. Always press OK after changing any setting.
28
Installer setup functions — Thermostat settings
Function Description Setting Options
8: OP Optimum start 0: Off **
1: On (see page 19 for description)
12: tO Temperature offset 0: No offset **
Options: +3° to -3°C (see page 19 for description)
13: Pb Proportional band width 1.5°C **
Options: 1.5° to 3°C (see page 19 for description)
19: FS RESET TO FACTORY DEFAULT 0: No change
1: Select 1 to restore default settings. All customised
settings will be lost.
See page 27 to change these settings. Always press OK after changing any setting.
29
Installation and Setup
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Installer setup functions — System settings
Function Description Setting Options
1: Ot Minimum boiler on time 1 minute **
2: Cr Cycles per hour (CPH) 6 cycles per hour **
4: HC Heating/Cooling options 0: No central cooling system installed **
5: PE Pump exercise 0: Off **
7: LC Behaviour when relay box cannot
communicate with thermostat
See page 27 to change these settings. Always press OK after changing any setting.
Options: 1 to 5 minutes
See page 31 for important information
Options: 3, 6, 9 or 12
See page 31 for important information
1: Allows switching between heating and cooling systems
Thermostat cannot control cooling unless you select 1
1: On (turns on pump periodically to keep equipment
functioning properly)
0: Relay box turns off **
1: Relay box operates 20% on / 80% off
30
Customised settings for your system
** Factory default settingEnter Installer Setup (see page 27), then press > for access to system settings
Your heating system Changes required Setting Options
Standard gas boiler
(<30kW)
Zone Valve None No change
Oil boiler System setting 1: Ot
Thermal actuator System setting 2: Cr Set to 12 CPH
Electric heating System setting 2: Cr Set to 12 CPH
Your cooling system Changes required Setting Options
Heat pump/air conditioner System setting 1: Ot
Fan coil System setting 4: HC Set to 1
NOTE: After changing the above settings to accommodate a cooling system, you can switch the thermostat to
control either heating or cooling (see page 10).
None No change
Set to 4 minutes
System setting 2: Cr
Set to 3 CPH
Set to 4 minutes
System setting 2: Cr
System setting 4: HC
31
Set to 3 CPH
Set to 1
Appendix
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
In case of difficulty
Thermostat screen
is blank
Heating or cooling
system does not
respond
Desired temperature
cannot be maintained
• MakesuretwofreshAAalkalinebatteriesareproperlyinstalled(see
page 24).
• Checkthermostatbatteries(seeabove).
• Makesureheatingandcoolingsystemshavepower.Checkfusesand
circuit breakers and replace or reset as needed.
• Checkwiring(pages22-23)andsystemconguration(pages30-31).
• Ifredlightonrelayboxison,thethermostatandrelayboxmaynotbeable
to communicate. See “Rebinding Procedure” on page 33.
• Ifaboveremediescannotresolvetheproblem,thethermostatmay
have to be moved. Try a location closer to the relay box, or farther
away from interference by metal objects or electronic devices such as
televisions, sound systems, PCs, etc.
• Ifaboveremediescannotresolvetheproblem,thethermostatmay
have to be moved. Make sure it is not installed near sources of hot or
cold air (radiators, windows, heating or cooling ducts).
32
In case of difficulty (re-binding procedure)
If you must replace a wireless thermostat or relay box, the system
may not work properly afterward. Follow the steps below to
re-establish wireless communication.
1 Hold thermostat about 1 or 2 metres from the relay box, then
press and hold the relay box button for 15 seconds.
Press and hold relay box button
(steps 1-2)
Press and hold these thermostat buttons (step 4)
CONTROL BINDING
Press thermostat OK button (step 5). Relay box
red light should turn off.
Note: After 5 seconds the red light flashing pattern will change,
but you must hold down the button for at least 15 seconds.
2 Release the relay box button, then press and hold it again for 5
seconds, until the red light flashes evenly (“binding” mode).
3 Release the relay box button, then press the thermostat OFF
button.
4 Press and hold the thermostat p, q and < buttons until
CONTROL BINDING appears on the display screen.
5 Press the thermostat OK button to signal the relay box. The red
light on the relay box should turn off. If not, wait a few seconds,
then press OK again.
6 Relocate and test the thermostat, as shown on page 24.
33
Appendix
homexperttm by Honeywell THR872CUK Wireless Programmable Thermostat
Limited Warranty
Honeywell warrants this product for 1 year from date of purchase. We undertake to replace or
repair at our discretion, products should they become defective within 1 year solely as a result
of faulty materials and or workmanship.
Understandably if the product has not been installed or maintained in accordance with
Honeywell’s instructions, has not been used appropriately or if any attempt has been made to
rectify, dismantle or alter the product in any way the warranty will be invalidated.
This product warranty states Honeywell’s entire liability. It does not extend to cover
consequential loss or damage or installation costs arising from a defective product.
If the product is defective, please return it together with a proof of purchase or receipt to the
place of purchase.
This does not affect your statutory rights.
If you require further information about this product, call the homexperttm by Honeywell
technical helpline on 0845 604 2893.
For a full list of terms and conditions please visit www.homexpertbyhonyewell.com.
© 2010 Honeywell International Inc.
34
Declarations, disposal and recycling
Declaration
Honeywell hereby declares that this wireless product is in compliance with the essential
requirements and other relevant provisions of the Radio and Telecommunications Terminal
Equipment (R&TTE) directive, 1999/5/EC.
Disposal and recycling
Batteries and waste electrical products should not be disposed of with household waste.
Please recycle where these facilities exist. Check with your local authority or retailer for
recycling advice.
Please retain these instructions for future reference.
35
Need Help?
For assistance with this product please visit www.homexpertbyhoneywell.com, or call
Honeywell Customer Care at 0845 604 2893.
®
Honeywell
The Arnold Centre
Paycocke Road
Basildon, Essex
SS14 3EA
Technical Help Desk: 0845 604 2893 50051985-001 Rev. A
www.homexpertbyhoneywell.com © 2010 Honeywell International Inc
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