35
The status LED on the ventilation unit flashes 3x red and 1x orange.
Cause
Solution
a) The ventilation unit detects that the sensor has
a fault.
●
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 lights up green (6 sec) and flashes orange once.
Cause
Solution
a) Frost mode is active.
●
This is not a malfunction. As soon as the
temperature rises above zero, the unit
will automatically shut down.
back to normal operation.
The status LED on the ventilation unit lights up green (5 sec) and flashes orange twice.
Cause
Solution
a) The bypass mode is active.
●
This is not a malfunction. The unit goes
automatically return to normal operation.
Both fans are no longer running
Cause
Solution
a) The plug of the ventilation unit is not plugged
into any
socket outlet.
●
Insert the plug into a
socket outlet.
b) There is no voltage at the socket outlet.
●
Restore the voltage at the
wall socket.
●
Use a different wall socket.
c) The fuse on the circuit board is defective.
●
Replace the fuse.
d) The printout of the ventilation unit is defective.
●
Replace the PCB and feed the
Commissioning procedure again.
The drain fan (bottom) is no longer running
Cause
Solution
(a) The connector of the fan is loose or
Wrongly connected.
●
Place the connector of the fan on
the correct connection of the circuit board.
b) The fan is start/stable due to extreme
temperatures.
pollution.
●
Clean the fan impeller.
Pay attention to the balancing clamps.
(c) The fan is defective.
●
Replace the fan.
d) The printout of the ventilation unit is defective.
●
Replace the PCB and feed the
Commissioning procedure again.
