Swegon bluMartin freeAir 100, Manual

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Operation
10 [ O ]
Red LED
A fast blinking red LED indicates that the last filter change has
been more than 8,700 hours ago (~ 1 year).
A slow blinking red LED indicates that the air stream through a
dirty and partially clogged filter is impaired. A slow blinking red
LED can also indicate air stream obstructions such as
inappropriately dimensioned openings between spaces of supply
and extract air.
Continuous illumination indicates control error. (See appendix
[S] Service).
DANGER
• An overly dirty filter (indicated by the red LED) can reduce supply and extract air flow. This
in turn can lead to diminished air quality and over or under pressure in connected rooms.
• Neglecting of filter change indicator may result in growth of harmful microbes.
Note
Excessive dust, inside or outside of the building during the building phase, may require
a premature filter change.
The red LED will appear continuously if the WiFi of the freeAir has been activated using the
freeAir Connect USB but is not connected to the local WiFi router.
This may be due to the wrong WiFi name or password, too far from the router or a problem with
the router or the internet.
The WiFi function is available up from pcb version 9 (software version 2.02 and higher).