Honeywell T3 User Manual

Honeywell T3 User Manual

Programmable thermostat


T3, T3R, T3M
Programmable Thermostat
EN User Guide
Programmable Thermostat
Programmable Modulating
Wireless Programmable Thermostat


Table of Contents

Summary of Contents for Honeywell T3

  • Page 1 T3, T3R, T3M Programmable Thermostat EN User Guide Programmable Thermostat Wireless Programmable Thermostat Programmable Modulating Thermostat...
  • Page 2: Table Of Contents

    Standby mode (with frost protect)........13 4) Keypad Lock ....................14 5) Optimisation ..................... 15 6) Changing the Batteries (T3 & T3R only) ........16 7) Table Stand and Wall Mount (T3R only) ........17 8) Wireless Receiver Box (T3R only) ........... 18...
  • Page 3: Thermostat Interface

    Thermostat Interface Screen and Button Overview 1030 13 Middle button Programming Menu Optimisation Settings Menu Low battery 14 Left button Alert Wireless signal (T3R) 15 Schedule period 10 Keypad Locked 16 Day Room Temperature Current time 11 Temperature adjust Heat demand 12 Right button...
  • Page 4: Screen And Button Overview

    Status Icons Temperature Override Active: Displayed if the programmed temperature has been manually adjusted. Low Battery: Power has reached approximately 10% (see Changing the Batteries on page 16). Heat Demand: Room temperature is below setpoint - indicating there is a demand for heating (boiler activity might occur). Optimisation Active: Only displayed if optimisation has been enabled in the installer settings.
  • Page 5: Menu

    Menu Heating Schedule Your Thermostat comes with the following default schedule. Follow the next steps to adjust heating schedule. 6:30 8:00 18:00 22:30 Days 1 to 7 (Mon to Sun) 21°C 16°C 21°C 16°C Adjusting the Schedule 2 Press to select the schedule 1 Press MENU to enter menu...
  • Page 6 3 Press to select the day to 4 Press to select the period to be adjusted and press be adjusted and press 0640 5 Press 6 Press to adjust the to adjust the time and press temperature and press 0650 0650 7 Repeat these steps to make adjustments to the remaining periods and days - or press...
  • Page 7: Copy Schedule

    Copy Schedule 1 Press 2 Press to choose the day to choose the day you want to copy the schedule to and press you want to copy the schedule from and press COPY Delete Period 1 Go to the day and choose 2 Press and hold the the period to delete.
  • Page 8: Settings (Date & Time)

    Settings (Date & Time) 2 Press to select the settings 1 Press MENU to enter menu SET and press the main menu. 1030 4 Press to adjust the 3 Press to select YEAR YEAR and press to skip forward to MONTH) year year...
  • Page 9 6 Press to adjust the 5 Press to select MONTH MONTH and press to skip forward to DAY) mnth mnth 8 Press to adjust the 7 Press to select DAY (or DAY and press to skip forward to HOUR)
  • Page 10 10 Press to adjust the 9 Press to select HOUR (or HOUR and press to skip forward to MINUTE) hour hour 12 Press to adjust the 11 Press to select MINUTE MINUTE and press and press mins mins 13 Press to exit SETTINGS and return to the home screen...
  • Page 11: Device Modes

    Device Modes Temporary override Automatic Operation Press the set the new desired During normal use your Thermostat temperature. The programmed schedule will will follow the programmed schedule resume at the next programmed setpoint. - indicated by the icon. +1hr Timed override Press for a 1 hour timed override.
  • Page 12: Manual Operation (Man)

    Permanent override Manual Operation Press the buttons to adjust the The set temperature is followed set temperature. This temperature is permanently - indicated by the icon. set until manually changed again.
  • Page 13: Standby Mode (With Frost Protect)

    Standby mode (with frost protect) Save energy by switching the heating off when not required - e.g. during warmer summer months, or when doors and windows are open for extended periods of time. If the temperature drops to 5°C the heating will come on to prevent the heating pipes freezing. 1 Press to switch the heating off - the display will show OFF 2 Press...
  • Page 14: Keypad Lock

    Keypad Lock Lock Unlock Press and hold the Left & Right buttons When the keypad is locked (indicated for 5 seconds. The display will show by the icon) -Press and hold the Left icon and (depending on the & Right buttons for 5sec to restore the installer setting) the Thermostat will Thermostat’s full keypad functionality.
  • Page 15: Optimisation

    Optimisation Optimisation Your Thermostat has optimisation functions that aim to save energy while maintaining suitable comfort levels. The Thermostat displays during the optimisation period if set. By default optimisation is disabled, see instructions on installation guide on how to activate it. •...
  • Page 16: Changing The Batteries (T3 & T3R Only)

    Changing the Batteries (T3 & T3R only) The Thermostat is powered by 2 x AA batteries, although a battery icon is not shown on the display during normal use. The only time you will see the battery icon is when they get low on power.
  • Page 17 Table Stand and Wall Mount (T3R only) Table Stand...
  • Page 18 Wall Mount...
  • Page 19: Wireless Receiver Box (T3R Only)

    Wireless Receiver Box (T3R only) The T3R Thermostat communicates wirelessly to the Receiver Box which is wired to the boiler. If the Thermostat loses wireless communication or becomes faulty, the boiler can be switched on or off manually using the button on the Receiver Box. •...
  • Page 20: Troubleshooting

    If you have difficulty with your Thermostat, try these suggestions. Most problems can be corrected quickly and easily. All models Screen is blank Replace the batteries (T3 & T3R only). Check the OpenTherm boiler has power (T3M only). Contact installer. Thermostat shows Batteries have less than 10% power and need to be replaced soon.
  • Page 21 T3R (Wireless) Thermostat & Receiver Box only Wireless signal lost - Move the Thermostat is flashing Thermostat to another location to try and Receiver Box LED is and restore communication. flashing RED. Check Receiver Box has power by pressing Thermostat is flashing the button to switch boiler on.
  • Page 22 Country of origin : UK ©2019 Resideo Technologies, Inc. All rights reserved. The Honeywell Home trademark is used under license from Honeywell International Inc.

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