Switching demand-driven mode on/off
Automatic function differs depending on control and ventilation unit. Automatic symbol only on RLS 45 K
RLS 45 O, RLS 45 K and PP 45 RC units: This function is only available with a connected and/or installed/taught-in sensor. The function can be activated in heat recovery or cross-ventilation mode.
PPB 30 K units on RLS 45 K / PPB 30 RC: In demand-driven mode, the ventilation level is always regulated using the measurements from the humidity sensor inside the unit.
| Switching on: Select ventilation level 3. |
| To switch on or off, press |
| To switch on or off, press |
Function of demand-driven mode: Continuously variable control of ventilation levels depending on sensor measurements. Is used to dehumidify the air or improve the room air quality.

button
for 2 seconds. When function is switched on, the
LED lights up continuously.