5
thermostat is OFF (when ON/OFF connec-
tion) or boiler is OFF (stand by) (when OT-
Bus connection).
DOMESTIC HOT WATER
(DHW MODE)
boiler is in domestic hot water only
(only available when OTBus connec-
tion and if the protocol allows this).
FAn
thermostat working only in ventilation
mode. FAn is displayed alternately
with time clock.
In AUTO - MAN - HOLIDAY
: during heating/cooling
a request for ventilation is always active.
ADVANCED function
Only in AUTO mode, by pressing the button (3) the
ADVANCED function is enabled or disabled (if enabled
the MAN icon is also shown on display). The function is
used to advance to the next scheduled heating program
event (ON or OFF) with related set temperature, possi-
ble up to midnight on that day. This temporary function
is helpful when arriving home early or leaving home be-
fore the next scheduled (OFF) event.
ONE HOUR BOOSTER function
Only in AUTO mode, by pressing the button (1) the
ONE HOUR BOOSTER function is enabled or disabled
(if enabled the MAN icon is also shown on display). This
function switches ON the heating at T3 (Comfort) for
1 hour. If current time is already in T3 (Comfort), this
function adds 1 hour to the current programmed time.
