Service
[ S ] 40
Error Messages
Filter Run Time
Indicates that it has been more than 8.000 operational hours (or
roughly one year) since the last filter change.
Note
After filter has been replaced select Service Operation to reset
the hour counter.
Filter Contamination
One or both fans indicate an error because the air flow is
restricted due to a dirty filter.
This error message can also be triggered by other air flow
obstructions such as (under dimensioned opening between
supply and extract air, DIP-switch setting for extract air is set too
high or simultaneous operation of a kitchen vent hood while
windows are closed).
CO
2
Content
CO
2
-content is measured to be above 3500 ppm.
An acoustic warning will sound for 30 seconds.
Piiep
Piiep
Piiep