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8. Operating mode
The timer-thermostat 02911 is able to regulate the temperature according to the following operating modes:
•
Switched off (OFF)
: switches the system off
•
Manual (ON)
: lets you set the environment temperature set-point manually
•
AUTO
: lets you set a control program that compares the room temperature with the value set for each
quarter of an hour of the current day; the user defines three levels of temperature distributed over 24 hours
which can then be varied for each day of the week.
•
Timed manual
: starting from AUTO mode, this lets you activate MANUAL operation of the timer-thermostat
for any period of time at the end of which the device will return to AUTO mode.
•
Away
: lets you set the set-point in order to achieve significant energy savings during periods when the user
is away
•
Antifreeze
: used to set a minimum temperature level to avoid damage to pipework or prevent the temper-
ature from falling below a safety level.
The operating mode is selected via the SETTINGS menu or with the shortcut keys.
8.1 Switched off (OFF)
With this mode on, the timer-thermostat is turned off and you cannot make any adjustments; in this case,
the
icon is displayed above the temperature indicator.
In this mode you cannot perform any operations other than activating the menus or changing the view
mode.
Fig. 17: Typical screen for OFF mode
For heating-only systems this mode is typically used in the summer.