Operation Manual

38
The boiler comes on earlier than the time set on the cen-
tral heating’s clock program.
• Thethermostatwillwanttoreachtherequiredtemperature
at the time set. As a result the boiler will start heating up ear-
lier, this is the so-called self-learning switch-on optimization
(chapter 1 refers).
The boiler’s starting time may be different every day, be-
cause the moment the thermostat has to come on to reach
the required temperature on
time is being recalculated every
day. This is a normal situation.
During this self-learning process
the ‘°C’-symbol on the screen
willbeashing.
Sometimes getting hot water takes longer than usual
•Thethermostatmayswitchtheboiler’sheatretentionsetting
on(Comfort)oroff(Economy).OnceintheComfortsetting
the boiler usually supplies hot water quicker than in the Eco-
nomy setting. Refer to chapter 5.3 for additional information
regarding this setting.
It is too cold inside the house
 Whenitistoocoldandthethermostatdoesnotindicate
a fault, then this may have several causes. The following
causesmayapply:
•Havealltheradiatorsbeenopenedproperly?Checkitout
and open them up further if necessary.
•Theboilermaystillbebusyheatingup.Checkitout.Check
the thermostat and you will see the temperature measured
by the thermostat. Press the
- key once and you will see
therequiredtemperature.Whenthesetemperaturesare
roughly the same then both the thermostat and boiler are
working properly.
 Setahighertemperatureifrequired:
- Refer to chapter 3.2 manual mode.
- Refer to chapter 4.2 for setting clock program.
• Canyouseetheradiator
symbol on the screen?
If you do not see it, the
thermostat for the central
heating program is switched UIT
(OFF).Theradiatorsymbolhas
to be visible in order to be able
to heat up the central heating
system.
- Refer to chapter 3.1 to activate manual mode.
- Refer to chapter 4.1 to activate the clock program.
radiator-symbol