34
7. Malfunctions
The status LED on the ventilation unit flashes orange
Cause
Solution
(a) The ventilation unit shall detect the need to
clean or change the filters.
●
Clean or replace the filters. See
Inspection,cleaning/replacing
filters on page 29.
●
Then reset the dirt filter indicator. See
above: Resetting the dirt filter
indication .
The status LED on the ventilation unit flashes 1x red and 1x orange.
Cause
Solution
(a) The ventilation unit detects that the exhaust fan
has a fault.
●
Check that the drain fan is properly
connected. Connect the fan properly.
●
Check fan for dirt and clean if
necessary.
●
Check the fan for defects and
Replace when necessary.
The status LED on the ventilation unit flashes red once and orange twice.
Cause
Solution
a) The ventilation unit detects that the supply fan
has a fault.
●
Check that the supply fan is properly
connected. Connect the fan properly.
●
Check fan for dirt and clean if
necessary.
●
Check the fan for defects and
Replace when necessary.
The status LED on the ventilation unit flashes 2x red and 2x orange.
Cause
Solution
a) The ventilation unit detects an error in the drain
temperature sensor.
●
Check that the sensor is properly
connected. Connect the sensor
correctly.
●
Check the sensor for defects.
Replace when necessary.
The status LED on the ventilation unit flashes 2x red and 3x orange.
Cause
Solution
a) The ventilation unit detects that the supply
temperature sensor has a fault.
●
Check that the sensor is properly
connected. Connect the sensor
correctly.
●
Check the sensor for defects.
Replace when necessary.
