Honeywell THR840DUK user manual 24.0 C, Temperature control, Energy-saving ECO mode

Operation

Temperature control

Current room temperature

24.0° C

Press buttons to display or change target temperature

25.0° C

When idle, the thermostat displays the current room temperature. You can press the p or q buttons at any time to see the “target” temperature the thermostat is trying to maintain.

One button press will display the target temperature, flashing. To change it, press either button repeatedly, until the display shows the temperature you want. After a few seconds the display will stop flashing and change to show the current room temperature.

NOTE: You can use the ECO mode to temporarily override the target temperature for a specified period of time (see page 11).

Energy-saving ECO mode

Press to enter ECO mode

ECO

1HR

Set number of hours

ECO

3HR

Change ECO temperature (if needed)

ECO

18.0° C

homexperttm by Honeywell THR840DUK Digital Thermostat

The ECO mode overrides thermostat settings to maintain a different temperature for 1 to 24 hours. This can be useful to reduce heating or cooling costs when you are away from home.

1Press the green ECO button to display timer.

2Press the p or q buttons to set timer (1-24 hours).

While in ECO mode, the screen will alternately display remaining time and current room temperature. After the timer expires, the thermostat will resume normal operation. Options:

•Press the p or q buttons to raise or lower the temporary ECO temperature if needed.

•Press the ECO button again to cancel ECO mode and resume normal operation.

NOTE: The default ECO temperature is pre-set to 18º C. To raise or lower the default temperature, see page 22.

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