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4. Settings
The temperature can be freely adjusted.
In single circuit and dual-circuit operation, the temperature setting
can be limited by the qualified contractor (see chapter “Installa-
tion/ Settings”).
1
2
4
3
26�02�07�0094
1 ON/OFF indicator for rapid heating
2 Rapid heating pushbutton (in dual-circuit operation)
3 Temperature selector
• Cold
E Recommended energy saving position, low scaling, 60°C
85°C Maximum temperature setting
4 "SERVICE ANODE" indicator
Depending on the system, the actual temperatures may vary from
the set value.
ON/OFF indicator
The ON/OFF indicator light illuminates while the water is heated
by the booster heater.
Rapid heating pushbutton in dual-circuit operation
You can switch on rapid heating with the pushbutton. A remote
control can also be installed for this purpose. Rapid heating stops
and will not restart when the selected temperature has been
reached.
“SERVICE ANODE” indicator
!
Material losses
Notify your qualified contractor if the SERVICE
ANODE indicator illuminates.
Instantaneous water cylinder operation following a power
failure
Following a longer power failure, you can switch the booster
heater on manually straight away by first turing the temperature
selector to the "cold" position and then up to 85 °C.
5. Cleaning, care and maintenance
Have the electrical safety of the appliance and the function of
the safety valve regularly checked by a qualified contractor.
The protective anode must be replaced by a qualified con-
tractor as soon as the SERVICE ANODE indicator illumi-
nates (see chapter "Maintenance/ Replacing the protective
anode").
Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
Scaling
Almost every type of water will deposit limescale at high
temperatures. This settles inside the appliance and affects
both the performance and service life. The heating elements
must therefore be descaled from time to time. A qualified
contractor who knows the local water quality will tell you
when the next service is due.
Check the taps regularly. Limescale deposits at the tap out-
lets can be removed using commercially available descaling
agents.
Regularly activate the safety valve to prevent it from becom-
ing blocked, e.g. by limescale deposits.
6. Troubleshooting
Problem Cause Remedy
The water does not heat
up.
There is no power.
Check the fuses/ MCBs in
your fuse box/distribu-
tion panel.
The flow rate is low.
The aerator in the tap
or the shower head is
scaled up or contami-
nated.
Clean and/or descale the
aerator or shower head.
SERVICE ANODE indicator
illuminates.
Replace the protective
anode.
Notify your qualified
contractor.
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 (000000-0000-000000):
Nr.: 000000-0000-000000
Made in Germany
D0000047942
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