AVC-02 Ventilation
Models: Models coming soon
In case of an alarm, the alarm code flashes in the display window.

Acknowledgement of alarms can be done in several ways:
on the control panel for five seconds.Service alarm ‘17’ can only be reset on the circuit board or via the control panel.
If the unit enters emergency mode after an alarm is indicated by the current alarm being indicated and the three buttons 

flashes briefly every 10 seconds.
Further reading: Description of alarm codes