Select Settings:

Use the arrow buttons to select Service menu:

Select OK:

Use the arrow buttons to select Fan test:

Select OK:

The Supply air display opens:

Use the Plus and Minus buttons to set the supply air volume as a percentage of the maximum output ratio.

You will be able to hear the fan speed change based on the set value. The fan speed is shown in the 1/min field.

Select Right arrow.

The Extract air display opens:

Use the Plus and Minus buttons to set the extract air volume as a percentage of the maximum output ratio.

You will be able to hear the fan speed change based on the set value. The fan speed is shown in the 1/min field.

Select Back: