OPERATION
Maintenance and care
6 |WPL 33 www.stiebel-eltron.com
5. Maintenance and care
!
Material losses
Maintenance work, such as checking the electrical safety,
must only be carried out by a qualified contractor.
Protect the appliance from dust and dirt ingress dur-
ing building work.
A damp cloth is sufficient for cleaning all plastic and sheet
metal parts. Never use abrasive or corrosive cleaning agents.
Every month, check that the condensate drain is working cor-
rectly (visual inspection). Remove contaminants and block-
ages immediately. When doing so, check whether water is
collecting below or next to the appliance. Observe the "Trou-
bleshooting" chapter.
We recommend an annual inspection (to establish the current con-
dition of the system), and maintenance by a qualified contractor if
required (to return the system to its original condition).
!
Material losses
Keep the air discharge and intake apertures free from
snow and leaves.
6. Troubleshooting
Fault Cause Remedy
There is no hot
water or the
heating system
stays cold.
No power at the appli-
ance.
Check the fuses/MCBs in your
fuse box/distribution panel. Re-
place the fuses/reset the MCBs
if required. Notify your qualified
contractor if the fuses/MCBs
blow/trip again.
Water is leaking
from the appli-
ance.
The condensate drain
may be blocked.
Clean the condensate drain as
described in "Maintenance and
care".
Indoor installa-
tion: Condensate
is collecting on
the outside of the
appliance or the
air hoses.
The drying out phase of
the building is not yet
complete.
If the room is sufficiently well
ventilated and dehumidified,
this condensate should no
longer form on the appliance ap-
prox.two years after the house
was built.
The relative humidity in
the air is high (≥60%).
A change in weather conditions
should no longer cause conden-
sation to form on the appliance.
The appliance is sited
in a damp room. Damp
rooms are those where
humidity in the air is high
due to the drying of laun-
dry, for example.
Ensure that the room is ade-
quately ventilated and dehumid-
ified. If necessary, hang your
laundry in a different room.
Use a vented tumble dryer.
Please note that condenser
tumble dryers do not reduce the
humidity in the air.
The air hoses are incor-
rectly fitted or poorly
sealed.
Cold air escapes.
Check whether the air hoses are
correctly fitted and sealed. If
necessary, refer to your qualified
contractor.
Outdoor installa-
tion: Condensate
is collecting on
the outside of the
appliance.
The heat pump is draw-
ing heat from the outdoor
air to heat the building.
This can cause the hu-
midity in the outdoor air
to accumulate as dew or
frost on the cooled heat
pump casing. This is not
a defect.
Note
Even when the condensate is draining away correctly,
expect water to drip from the appliance onto the floor.
If you cannot remedy the fault, notify your qualified contractor.
To facilitate and speed up your enquiry, please provide the serial
number from the type plate. The type plate is located at the front
top, on the right or left hand side of the casing.
Sample type plate
Montageanweisung beachten! Dichtheit geprüft!
Made in Germany
*xxxxxxxxxxxxxxxxxx*
26_03_01_1736
1
1 Number on the type plate
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