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Operation
Temperature control
When idle, the thermostat displays the current room temperature.
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.
24.
One button press will display the target temperature, flashing. To
°
c
change it, press either button repeatedly, until the display shows
0
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
Press buttons to display or change target
temperature for a specified period of time (see page 11).
temperature
25.
°
c
0
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 23.
18.
°
c
0
homexpert
by Honeywell THR842DUK Wireless Digital Thermostat
tm
11
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