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Operation
Temperature control
Current room temperature
24.
°
c
0
Press buttons to display or change target
temperature
25.
°
c
0
This Manual: http://www.manuallib.com/file/2598268
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).
10
Energy-saving ECO mode
The ECO mode overrides thermostat settings to maintain a different
Press to enter ECO mode
temperature for 1 to 24 hours. This can be useful to reduce heating or
eco
cooling costs when you are away from home.
1
1 Press the green ECO button to display timer.
hr
2 Press the p or q buttons to set timer (1-24 hours).
While in ECO mode, the screen will alternately display remaining time
Set number of hours
and current room temperature. After the timer expires, the thermostat
will resume normal operation. Options:
eco
3
• Press the p or q buttons to raise or lower the temporary ECO
temperature if needed.
hr
• Press the ECO button again to cancel ECO mode and resume
normal operation.
Change ECO temperature (if needed)
NOTE: The default ECO temperature is pre-set to 18º C. To raise or
eco
lower the default temperature, see page 22.
18.
°
c
0
homexpert
by Honeywell THR840DUK Digital Thermostat
tm
11
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