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g) Put both filter covers back in the front panel.
h) Put the ventilation unit back into operation by switching on the
power.
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6.6. RF status indicator control maintenance
The RF status indicator control is mains powered, so it does not
have any batteries that need to be replaced. The only maintenance
to be done consists of cleaning the outside of the device with a
damp cloth if necessary. Do not use chemical cleaning agents.
6.7. RF remote control maintenance
The wireless control switch is battery powered. Under normal usage
conditions, the battery has an estimated service life of around 7
years. Once the battery is fully drained, the control switch will no
longer work, and it will no longer be possible to manually operate
the ventilation unit. The battery (type CR2032 3V) must then be
replaced. Inserting the battery incorrectly may damage the product.
The batteries should not be exposed to excessive heat in the form
of direct sunlight, fire, etc.
It is not necessary to pair the control switch again.
6.8. Inspection of additional RF sensors
For inspection and maintenance of the RF-RH sensor, the RF-PIR
sensor or the RF CO
sensor, consult the information provided with
2
the relevant sensor.
6.9. Inspecting and cleaning air valves
Check the air valves regularly (around once every three months) for
soiling. If the air valves are dirty, they must be cleaned.
ä
Caution!
When removing or replacing air valves and grilles, watch out for
protruding duct sections. These can be very sharp.
ä
Caution!
When cleaning, do not adjust the air valve settings, and replace
the valves in their original ducts.
6.10. Inspecting and cleaning ducts
It is advisable to check the ducts in the housing once every four
years. The ducts must be cleaned once every eight years.
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