OPERATION
Maintenance, cleaning and care
www.stiebel-eltron.com LWZ130 | 37
ENGLISH
4.5.4 Code
Cod
You can use this menu item to enable actual values and parame-
ters, which are reserved for qualified contractors.
Options Effect
A0
The only parameters displayed are those that have been released
for the appliance user and can therefore be accessed without a
code.
A1 Parameters for qualified contractors
A2 Parameters for service department
A1 or A2 is shown on the display when you enter the correct
four-digit code.
If you switch to the actual values or parameters, you see the en-
abled parameters.
Note
After entering the code, switch to the menu by pressing
the "MENU" button. If you first switch to the standard
display by pressing the "HOME" button, the parameter
block is reactivated.
4.6 Switching off the appliance
!
Material losses
If you interrupt the power supply to the appliance, check
that humidity protection is ensured for the building.
The appliance has no ON/OFF switch. Disconnect the power supply
at the fuse/MCB in the domestic distribution board.
5. Maintenance, cleaning and care
Maintenance by the user is limited to filter inspection and replace-
ment required at certain intervals.
5.1 Replacement filters
Part
number
Product name Description Classification in
accordance with
ISO16890
Quan-
tity
238923 FMS G4-10 130/135 Coarse particle
filter mat
ISO Coarse > 60 % (G4) 10
238924 FMK M5-2 130/135 Fine filter ePM
10
≥ 50 % (M5) 2
238925 FMK F7-2 130/135 Fine filter ePM
1
≥ 50% (F7) 2
5.2 Filter inspection and replacement
!
Material losses
Never operate the appliance without filters.
!
Material losses
Operate the appliance with at least the recommended
filter class. Ensure that filters are fitted precisely so that
they can fulfil their function.
f Inspect the filters for the first time three months after com-
missioning the appliance.
When the total fan runtimes reach the “Filter change interval”
value, which can be set by the qualified contractor, the program-
ming unit displays the “Filter” symbol.
The qualified contractor can lengthen or shorten the interval for
inspecting filters depending on the level of contamination.
If the "filter" symbol illuminates, check the filters.
Change the filters if the surface is covered completely in dirt or
the filter is discoloured throughout.
Change the filters at least every 12 months.
Filter inspection
f Disconnect the appliance from the power supply.
D0000068468
2
3
1
3
4
5
6
1 Wing screw
2 Filter cassette, extract air filter
3 Filter mat
4 Grille
5 Filter cassette, outdoor air filter
6 Outdoor air filter
f Undo the wing screw on the filter cassette of the extract air
filter by turning the screw anti-clockwise.
f Remove the filter cassette from the appliance.
1.
2.
3.
D0000068462
f If necessary, place a new filter in the filter cassette. To do
this, slide the grille – behind which the filter mat is located –
a little to one side and swing the grille forwards like a door.
!
Material losses
Operate the appliance with at least the recommended
filter class. Ensure that filters are fitted precisely so that
they can fulfil their function.
f Ensure that the direction of air flow through the filter is
correct.
M5 , F7 : The direction of flow is indicated by an arrow on the side
of the filter.
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