10. Built-in devices 161
As soon as the heating has been switched on (room tem-
perature and hot water temperature have been activated)
the type of energy selected in the previous heating opera-
tion is displayed in the status line.
Manufacturer's default setting: gas.
Special features in mixed operation
Interrupting the 230V power supply:
The heating system will switch automatically to gas operation.
As soon as the 230V power supply has been reinstated, the he-
ating system will automatically switch back to mixed operation.
Malfunction in the combustion process (e.g. lack of fuel):
Combi Gas The heating system will switch automatically
to electric operation. If it is running in mixed
operation, the cause of the malfunction must
be eliminated. Use the control panel to switch
the heating off and then on again.
Special features in electric operation
- If the 230V power supply is interrupted and the 12V supply has
been switched on, an error code will be shown on the display.
- As soon as the 230V power supply has been reinstated, the
heating system will automatically be restarted using the
previous settings. The error code will disappear.
.
Use the adjusting knob / pushbutton to select the icon in the
menu line
l
.
• Press to switch to the setting mode.
• Use the adjusting knob / pushbutton to select the desired
fan
speed.
• Press the adjusting knob / pushbutton to confirm the temperature.
Selecting the fan speed
a
b
c
d
3
e
Icon Type of operation Description
-
OFF
Fan is switched off.
(Can only be used if no device is
being operated.)
a
VENT
1)
Air circulation, if no device is being
operated. RPM can be selected in
10 increments.
b
ECO
Automatic regulation of the fan
depends on the heating power,
optimised for the current heating
requirement.
c
HIGH
2)
High fan speed