Switching statuses

Value call-up/displays

● Supply air fan: Exhaust air fan on or off
● Exhaust air fan: Exhaust air fan on or off
● Supply air heat register: Internal supplementary heating on or off
●Switching contact of main circuit board: Switching contact relay active or inactive
● Input 1 Supply air fan
● Input 2 Exhaust air fan
● Input 1 Exhaust air fan
● Input 2 Exhaust air fan