Olimpia splendid NEXYA S5 E DUCT Mode D'emploi Et D'entretien page 54

Maintenance –
Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the following:
Check for damaged
wires
Make sure nothing is blocking all air inlets and outlets
Checks before use
Before installing and using the internal unit, make sure you have connected the display panel.
In order to be able to command the internal unit through the remote control, connect the display panel
(DISPLAY BOARD) to the clamp CN10 of the electronic board of the internal unit.
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Clean all filters
CN40
4
Check for leaks
Replace batteries