Vasco DX4 Manuel D'installation Et D'utilisation page 93

At each service, check that the condensate drain is working properly and
INSPECTION /
that the siphon is still filled with water.
CLEANING
CONDENSATE
DRAIN
BATTERY REPLACEMENT
The batteries in the RF switch must be replaced periodically. The RF switch
is equipped with an automatic notification when the batteries need to be
replaced.
When replacement is necessary, while operating the position switch,
the LED on the position switch lights orange 1x.
RF SWITCH
The batteries in the RF switch must be replaced periodically. To do this,
remove the faceplate. Remove the PCB. The CR2450 battery is visible on
the back of the PCB.
REPLACEMENT BATTERIES RH RF SWITCH
The batteries in the RH RF switch for the bathroom must be replaced
periodically. To do this, remove the faceplate. The 1.5 V AA batteries are
now visible and can be replaced.
Failure to carry out maintenance work on time will ultimately result
in the unit no longer functioning optimally. New filters for the
ventilation unit are available per set from your Vasco ventilation
system supplier and from Vasco Ventilation Concepts (dealer list at
www.vasco.eu).
MAINTENANCE 07