previously suppled air quantity in the respectively active operating mode. The
boost ventilation mode can be terminated any time by pushing this button > 3
seconds.
Function button for reset filter runtime:
An operating hour counter with a set runtime of 180 d is integrated in the
control for cyclical filter control. The button boost ventilation mode / reset
filter runtime is used to reset the filter runtime. Pushing this button > 3 s
restarts the filter runtime.
If a reset of the filter runtime is carried out before expiration of the 180 d by
pushing the button > 3 s, the reset is acknowledged by 4x quick flashing of
the LED-fan-symbol.
No reset command is possible during an active boost ventilation
mode!
Tab. 2: Operating functions external control panel
2.2.1.2 Signalling of operating and maintenance modes
Function / meaning / measure
Operating mode normal mode (exhaust and supply air)
LED extract air
symbol lights
Operating mode extract air mode active (extract air only)
LED supply air
symbol lights
Operating mode supply air mode active (supply air only)
Boost-ventilation mode active;
Boost-ventilation mode is possible in any
operating mode!
LED fan symbol
is flashing
Un-occupied mode is active;
Un-occupied mode is possible in any
operating mode!
LED fan-symbol
is flashing quickly
Filter runtime expired; carry out filter control or filter
change
Boost ventilation mode cannot be activated
as long as there is not reset command!
Tab. 3: Function assignment of LED-signalling
External control signal 0-10V 2.2.2
The ventilation device can be operated with an external control signal 0-10 V. A 0-10 V applied analogue
signal is interpreted as control signal for the fan rotational speed. The externally suppled control voltage is
only valid above the range of the present scale position of the rotary knob.
In order to use the whole external 0-10 V – control range, the rotary knob must be in
position 1!
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