OPERATION
Settings
www.stiebel-eltron.com WPL 10 | 5
3.2 Function
Heat is extracted from the outdoor air via the heat exchanger
(evaporator) on the air side. The refrigerant evaporates and is
compressed by a compressor. This process requires electrical
energy.
The refrigerant is then at a higher temperature level and transfers
the heat drawn from the air to the heating system via an additional
heat exchanger (condenser). During this process, the refrigerant
expands and the cycle begins again.
At air temperatures below approx. 7°C, the humidity in the air
condenses as hoarfrost on the evaporator fins. Any hoarfrost is au-
tomatically defrosted. Water created from this defrosting process
collects in the defrost pan and is drained off via a hose.
In the defrost cycle, the fan is switched OFF and the heat pump
circuit is reversed. The heat required for defrosting is drawn from
the buffer cylinder or heating circuit. The heat pump automatically
reverts to heating mode at the end of the defrost cycle.
Special features of the WPL10IK3
The WPL10IK3 is equipped as standard with the WPM heat pump
manager. It is also equipped with a heating circuit pump, an expansion
vessel and a three-way valve for changeover between the heating circuit
and DHW heating. The standard delivery also includes the air hoses and
their fixing materials.
4. Settings
The system is operated exclusively with the WPM heat pump man-
ager.
Please observe the heat pump manager operating and instal-
lation instructions.
5. Maintenance and care
!
Damage to the appliance and environment pollution
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
correctly (visual inspection). When doing so, check whether
water is collecting below or next to the appliance. Observe
the "Troubleshooting" chapter.
We recommend an annual inspection (to establish the current
condition of the system), and service by a contractor if required
(to return the system into its original condition).
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.
If required, reset the MCBs. If
the MCBs trip again after being
reset, notify your contractor.
Water is leaking
from the appli-
ance.
The condensate drain
may be blocked.
Call your contractor to have the
condensate drain cleaned out.
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 con-
tractor.
If you cannot remedy the fault, notify your 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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