20
Operation - for users and qualified contractors
2.4 Test symbols
See type plate on the appliance.
Country-specific approvals and certifications:
Germany
A general test certificate as
verification
of suitability regard-
ing noise emissions has been issued for this appliance,
based on the State Building Regulations [Germany].
AEG
HOL
DIN 4109
PA-IX 6814/I
3.
Appliance description
The electronically controlled instantaneous water heater
with automatic output matching keeps the outlet temper-
ature constant up to the output limit. The temperature is
then selected via the draw-off tap.
Heating system
The bare wire heating system has a pressure-tested plas-
tic casing. The heating system is suitable for hard and soft
water areas; it has low susceptibility to scale build-up.
This system ensures rapid and efficient DHW availability.
Note
The appliance is equipped with an air detector that
largely prevents damage to the heating system.
If,
during operation, air is drawn into the appliance,
the appliance shuts down for one minute, thereby
protecting the heating system.
4. Settings
The DHW outlet temperature can be variably adjusted.
The selected temperature is displayed. At temperatures
over 43 °C, the colour of the display changes from blue
to red to indicate a risk of scalding.
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» Turn the temperature selector to the required
temperature.
Note
If the outlet temperature is not sufficiently high when
the draw-off valve is fully open and the temperature
selector is set to maximum, then more water is flow
-
ing through the appliance than can be heated by the
heating system (appliance is at its output limit).
»
Reduce the water volume at the draw-off valve.
Recommended setting for operation with a
thermostatic valve
Set the temperature at the appliance to the maximum
temperature.
Following an interruption of the water supply
!
Material losses
Following an interruption of the water supply the ap
-
pliance must be recommissioned by carrying out the
following steps, in order to prevent the destruction
of the bare wire heating system.
»
Disconnect the appliance from the power sup
-
ply by removing the fuses/tripping the MCBs.
»
Open the tap for one minute until the appliance
and its upstream cold water inlet line are free of
air.
»
Switch the mains power back ON again.
5.
Cleaning, care and
maintenance
» Never use abrasive or corrosive cleaning agents. A
damp cloth is sufficient for cleaning the appliance.
» Check the taps regularly. Limescale deposits at the
spouts can be removed using commercially available
descaling agents.
6. Troubleshooting
Problem
Cause
Remedy
The appliance will not
start despite the DHW
valve being fully open.
There is no power.
Check the fuses/
MCBs in your fuse
box/distribution panel.
The flow rate is too
low. The aerator in
the tap or the shower
head is scaled up or
contaminated.
Clean and/or descale
the aerator or shower
head.
Required tempera-
ture > 45 °C is not
achieved.
The water supply has
been interrupted.
Vent the appliance
and the cold water
inlet line (see chapter
“Settings”).
The cold water
inlet temperature is
> 45 °C.
Reduce the cold water
inlet temperature.
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 (000000-0000-00000):
Nr.: 000000-0000-00000
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