iNSTaLLaTiON
maintenance
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WPL E | WPL cool |
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16.3 Fan noise
The heat pump draws heat from the outdoor air. This causes the
outdoor air to cool down. At outside temperatures of 0 °C to 8 °C,
the air may be cooled to below freezing point. If under these
conditions precipitation occurs in the form of rain or fog, ice may
form on the air grille, the fan blades or the airways. If the fan
comes into contact with this ice, this creates noise.
How to remedy rhythmic scratching or grinding noises:
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Check whether the condensate drain is clear of obstructions.
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Carry out a manual defrost, as many times as necessary,
until the fan runs freely again. Observe the information in
the WPM operating and installation instructions and pa-
rameter "START DEFROST" in menu "COMMISSIONING /
COMPRESSOR".
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At outside temperatures above +1 °C, shut down the appli-
ance or switch it over to emergency mode for approx. 1 hour.
After this, the ice should have melted.
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Check that the appliance is installed in line with installation
conditions.
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If the noises occur frequently, notify customer support.
17. Maintenance
If heat meters are installed, their sieves should be cleaned reg-
ularly.
Regularly remove all leaves and accumulated dirt from the evap-
orator fins, which can be accessed by removing the side panel on
the condenser side.
Check the condensate drain is working correctly. Remove any
contamination (see chapter “Clean condensate pan and drain”).
We recommend a regular inspection (to establish the current con-
dition of the system), and maintenance if required (to return the
system to its original condition).
17.1 Clean condensate pan and drain
WARNING Electrocution
Before removing the casing parts disconnect all polls of
the appliance from the power supply.
Environmental influences can lead to the condensate pan and
drain becoming contaminated or blocked. To clean, proceed as
follows:
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Remove the casing parts (see chapter “Fitting the casing
parts”).
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When installed indoors, also carefully remove the foil from
the appliance frame.
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Remove the lower cover panel.
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Clean out the rear section of the condensate pan.
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Clean out the front section of the condensate pan.
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Check the hose and the condensate drain pipe, and remove
all contaminants and blockages.
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When installed indoors, carefully re-affix the foil to the appli-
ance frame.
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Refit the casing parts on the appliance (see chapter “Fitting
the casing parts”).
