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When the low mode is activated, the fan goes into the high mode/when the
high/timer mode is activated, fan starts running in low mode
Cause
Solution
(a) A temperature sensor of the ventilation unit
itself is defective.
●
Replace the defective temperature sensor.
The fan suddenly turns much faster or softer (for no apparent reason).
Cause
Solution
(a) The RF control of an adjacent dwelling has
been logged on to
this
fan.
●
Disconnect the ventilation unit from the
power supply for 15 seconds. Log off an
already logged on RF control (and
sensors) and log it (and sensors) again.
on.
The ventilation unit does not respond to the 3-position switch
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 switching wires of the 3-position switch
are mounted incorrectly.
●
Connect the switching wires to the correct
way (see connection diagram).
d) The printout of the ventilation unit is defective.
●
Replace the PCB and feed the
Commissioning procedure again.
The ventilation unit is leaking water
Cause
Solution
a) The condensate drain is not connected.
●
Connect one of the two condensation
drains.
(b) The condensate drain is blocked.
●
Unplug the condensation drain and try the
cause to be found.
Channels to the outside are wet (on the outside) and/or leaking water
Cause
Solution
a) The ducts to the outside are not thermally and
vapour tightly insulated.
●
Make sure that the channels that go out
over the entire length are thermal and
are vapour-tight insulated.
b) There is no rain- and vapour-tight roof
penetration.
applied.
●
Replace the existing roof gutter(s)
through rain- and vapour-tight passage(s).
The valves make sound
Cause
Solution
(a) No silencing hose is fitted
in the canals to the house.
●
Mount sound-absorbing hoses on the
Channels that go to the house.
(b) The valves are not properly adjusted.
●
Set the ventilation unit to the
commissioning position and adjust
the
system again.
