oPErATIoN
Cleaning, care and maintenance
22
| LWE 40
www.stiebel-eltron.com
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Remove the internal filter.
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Remove the external filter. Use a screwdriver if necessary.
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Insert new external and internal filters.
5.2.3 Resetting the filter timer
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When the "Filter" indicator lights up, press the "Cross-venti-
lation" and "Differential mode" buttons simultaneously for at
least 3 seconds.
The "Filter" indicator goes off.
5.2.4 Logging a filter change
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Enter the filter change in the filter change report at the back
of the instruction manual.
5.3 Cleaning heat exchangers
Clean the appliance's heat exchangers at the start of the heating
season. If the ambient air is polluted, clean the heat exchangers
every 6 months.
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The semi-shells of the fan unit are secured with bayonet screws,
which are loosened by turning 90° anti-clockwise.
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Undo the two screws on the long side of the fan unit.
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Rotate the fan unit 180°.
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Undo the two screws on the long side of the fan unit.
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Lift off the top half of the fan unit.
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Remove the heat exchange sections.
The fan does not need to be removed.
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Check the fan blades for contamination.
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Carefully dry-wipe the fan blades if necessary.
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Carefully clean the unit casing and the fan with a dry cloth.
Material losses
Never put heat exchangers in the dishwasher. Otherwise,
there is a risk of corrosion.
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Wash the heat exchange sections in warm water with a little
washing-up liquid.
