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11
Troubleshooting
Malfunction
The fan(s) do not
No power supply
start when the
system is switched
on.
Cold supply air
Dirty exhaust air
filter
Icing of the heat
exchanger
Failure of the heating
coil
Low flow rate
Dirty filters, fans and
heat exchangers
Clogged or damaged
ventilation system
Loud noise,
Dirty fan impellers
vibrations
Water leakage
Loose screw
connection in the
fans
54
Possible reasons
Check whether the power supply
is connected correctly. If not,
rectify the connection error.
Clean or replace the exhaust air
filter.
Check the heat exchanger for
icing. If necessary, switch off the
ventilation system and allow the
ice to melt.
Contact your dealer.
Clean or replace the filters, clean
the fans and the heat exchanger.
Check that the diffusers and
shutters are open. Check the
condition of the ventilation
bonnet and the supply air grille
and clean them if necessary.
Check the ventilation pipes for
dirt or damage.
Manual – AlphaAir Freshbox 100 WiFi
Remedy
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