27
3.3.4. Enabling/Disabling the Illumination for Operation Modes
If necessary, you can turn off LED illumination. In order to do that press and hold the knob for
about 3 seconds. The ventilation system is now working in the operating mode selected
previously. Whenthe setoperation mode is changed, the corresponding LEDlights up briefly
(approx. for 1 sec).
To switch on the illumination of the control press it and holdthe knobpressed for about 3
seconds.
3.3.5. Operation Modes of Twist Control
3.3.5.1.
Operation Mode “Ventilation with Heat Recovery”
When turning the knob of the control clockwise, only one
green LED lit up shows the first speed, if two diodes are on –
it is the second speed, etc. In this mode the ventilation system
most efficiently saves the heat from the consumed air in the
heat storage and enriches the incoming fresh outside air with
this heat.
When the device is reversing, it is indicated by the blinking of
the blue LED. The ventilation unites reversing every 68
seconds. This visual illumination only means that the fans have
changed the direction of rotation (the function appears only
when the illumination is activated).
The best results are achieved when the unit is
steadily running on low levels 1-2. In addition to
high heat gain, the noise level is the lowest!
3.3.5.2.
Operation Mode “Ventilation at the Selected Speed”
By pressing the rotary knob when " Ventilation with Heat
Recovery " operation mode is activated, the blue LED lights
are on and the ventilation units start working in "Ventilation"
operation mode which means that the reversing is switched
off and cold air of an outside temperature flows into the
rooms.
