If you are starting the ventilation unit for the first time or after a maintenance procedure, first connect it to the mains. This will start the unit. During the start-up, the diagnostics display will appear for a few seconds (see the section called “Diagnostics”). Once the download is complete, a profile display is opened showing the latest saved status of the unit.

If the ventilation unit was turned off from the control panel (see the section called “Turning the unit off”), you can start it by pressing any control panel button.