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A fault, what to do?
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6 720 876 029 (2018/09)
12 A fault, what to do?
WARNING:
Attention!
Repairs must only be carried out by an authorised technician. Improper
repairs can lead to risk of serious injury to the user.
If your appliance does not operate as required, it is often due to a very
minor problem. Please check whether you can remedy the fault yourself
by using the following guidelines. You will save yourself the costs of an
unnecessary visit by customer service personnel.
12.1 Faults that the customer can troubleshoot himself
If the fault could not be eliminated, please call customer service.
12.2 Faults that the customer service specialist should troubleshoot
12.3 Faults that are automatically remedied
Fault Cause Solution
Water flow-rate is too low. The filter in either the water tap or the showerhead
is clogged.
Remove the filter and either clean it or descale it.
A high water temperature is set,
but it is not reached.
The continuous-flow heater is connected to
a thermostatically-controlled water tap.
Set the temperature on the continuous-flow heater
to “60 °C”.
The display is blank. The fuse in the fusebox has tripped/blown. Check the fuse in the fusebox.
The water is not warm. The supply temperature has reduced. Reduce the water flow on the taps until the desired
water temperature is reached.
The temperature of the water leaving
the tap is higher than the set
temperature.
The temperature of the water supplying
the continuous-flow heater is higher than the set
temperature (e. g. due to pre-warmed water supplied
from a solar water heater).
The thermostatic premixer in the domestic supply
must be set accordingly to lower temperatures.
Lights up in the display. The power limit has been reached. Reduce the water flow at the tap or lower
the temperature setting on the appliance.
Fault Cause Solution
Water flow-rate is too low despite
cleaning of filter using the water tap
or showerhead.
A filter in the appliance is clogged. Get a servicing expert to clean the appliance.
The display is blank despite fault-free
function of the mains electricity supply
fuses.
There is a fault in the appliance. Get a servicing expert to check the appliance.
The display shows the error code “E..”. There is a fault in the appliance. Get a servicing expert to check the appliance.
Fault Cause Solution
The display shows “00,0°C”. The air sensor in the appliance detects air in the water
and momentarily switches the heating element off.
After a few seconds, the continuous-flow heater
automatically goes back into operation.
13


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