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pears on the display, indicating that the thermostat is operated with
manual control. Then, press the “HOLD” button briey, after which
the icon appears and the icon disappears. The device will
then control the boiler according to the set value until the next man-
ual interference. During this time, the thermostat acts exactly the
same way as a non-programmable thermostat. The adjusted tem-
perature can be freely changed during this temporary modication
without exiting it.
If you wish to return to the set program, please press the “SET”
button.
6. TURNING ON THE BACKLIGHT
When you press the “LIGHT” button, the background light of the
display will turn on for 15 seconds. When you press another but-
ton while the display is illuminated, the background light will turn
o only after 15 seconds have elapsed since the last button had
been pushed. If you would like the light to turn on automatically
after a button is pressed, then press the “LIGHT” button for 5
seconds. After this the light will automatically turn on after any
button is pressed and will turn o 15 seconds after the the last
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