The following operating modes are available:
Normal mode 
In Normal mode (ON), the controller displays the fan speed and air flow status.
OFF mode 
In OFF mode, the controller is turned off.
Timer with delay Off mode 
In timer with delay Off mode, the timer starts counting down according to the set hour when parameter P28 is enabled. When the timer expires, the device automatically turns off.
1 | Activation of timer with delay Off mode |
When P28=1, press and hold | |
2 | Setting the timer with delay Off mode |
- A preset value (1h) is displayed after entering delay Off timer mode. | |
- Use + or - to change the time up to 23 hours with a 0.5 h increment or decrement respectively. | |
- Press | |
- Or press | |
3 | Cancellation of timer with delay Off mode |
Cancel by setting the timer to 0 hour. | |
4 | Viewing or editing of timer with delay Off mode |
- Press and hold down | |
- Use + or - to change the time and press | |
- The timer runs according to the new value. |
Operating mode setting upon power down
If the FAU is disconnected from AC 230 V power and reconnected, the unit returns to same operating mode before powering down if P27=0. If P27=1, the unit is in OFF mode. If P27=2, the unit resumes Normal mode (ON).