Honeywell T4 User Manual - Free PDF Download

Page 3 - Contents

3 Contents Thermostat Interface ..................................................................................... 4 Status Icons ......................................................................................... 4Menu & Navigation Icons ...................................................

Page 4 - Thermostat Interface; Status Icons

4 Thermostat Interface Room temperature Setpoint temperature Days of week Current time / Timer Menu itemsAlert / Fault Setpoint periods Low batter y Heat demand Schedule status Temperature adjustment / Menu navigation Menu Confirm Cancel Back Away mode Timed override Standby mode Home screen Status ...

Page 6 - Heating schedule; Menu

6 Heating schedule Your Thermostat comes with the following default schedule. Follow the next steps to adjust the programmed schedule. Days 1 to 5 (Mon to Fri) Days 6 & 7 (Sat & Sun) Period Time °C Time °C P1 6:30 - 8:00 19 °C 8:00 - 10:00 19 °C P2 8:00 - 18:00 16 °C 10:00 - 17:00 16 °C P3 1...

Page 8 - Clock; Date

8 Menu Clock To make adjustments to the clock format or time. 1. Press to enter the main menu. 2. Press or to select the Clock menu and press 3. Press or to change the clock format and press 4. Press or to adjust the time and press Keypad lock You can lock the keypad to prevent unnecessary adjustmen...

Page 9 - Optimisation

9 Menu 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. • Optimum Start learns how long it takes your home to reach a set temperature and then turns the heating on...

Page 11 - Schedule Override; Temporary Override; Turn Schedule Off

11 Schedule Override Temporary Override Set until next programmed setpoint is reached. 1. Press or to set the new desired temperature. The programmed schedule will resume at the next programmed setpoint. During normal use your Thermostat will follow the programmed schedule - indicated by the icon. T...

Page 14 - Troubleshooting

14 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 (T4 & T4R only).Check the OpenTherm boiler has power (T4M only).Contact installer. Thermostat shows Batteries...