EN - 25Exiting the status menu6. Press or to select BACK.7. Confirm with OK.8. Press MENU to return to the mainmenu.2.13 CLOCK Back-upThe device can keep the clock running forat least one hour without power. After thatthe clock has to be set again. Before theback-up is able to function fully, the devicehas to be powered for at least 20 minutes.The set values in the parameter menu’swill always be saved.3. Error messagesWhen the filters must be cleaned orreplaced the text says FLTR or FLTR, EXT*.Clean or replace the filters as described inthe manual of the ventilation unit.In event of a malfunction in the ventilationunit, the text says ERROR, and thecorresponding malfunction code.The meaning of the displayed malfunctioncode and how to solve the problem can befound in the manual of the ventilation unit.The following malfunction codes onlyappear on the device:Code DescriptionFLTR Internal Filter is dirty.FLTR, EXT External Filter is dirty.COMM,ERRORNo communication betweenthe ventilation unit and thedevice.Resetting FLTR1. Press OK to enter the reset menu.2. Press OK to confirm. The text saysDONE for 2 seconds. The menu isautomatically closed.Resetting FLTR EXTAfter cleaning or replacing the externalfilter as mentioned in the external filtermanual the malfunction code will resetitself automatically.Resetting error messages1. Press MENU.2. Press OK to confirm. The text saysOK for 2 seconds. The menu isautomatically closed.4. InstallationDisconnect the ventilation unitfrom the main power beforeinstalling the device.Always follow local safetyregulations. During assembly,ensure that ALL screws are tight.The letters mentioned in thischapter refer to the installationfigures (Fig. 1, 2, 3 or 4) at theback of this document.1. If ordered: Attach the wall-mountingcasing I with the plugs H and screwsG to the wall.2. Fasten the wall frame A with thescrews F** on the wall, wall-mountingcasing I or mounting plate**.3. Put the communication cable throughthe wanted design frame X andresize window D4. Connect the communication cablebetween the ventilation unit and thedevice as shown in fig. 5 at the backof this document.The cable requirements are:■ Maximum length: 50m■ Number of cores: 4■ Advice Ø: 0,60mm 2■ Minimum Ø: 0,25mm 2■ Maximum Ø: 1,00mm 25. Screw the device B (with the designframe X and the resize window D)with the screws E to the frame A.* Only available if the mentionedfunction is connected.