A fault, what to do?
6 720 876 022 (2018/09)
8
2.4
Customer Service
We ask you to always provide the
BOSCH
serial number
(SNR/TTNR)
of
your appliance when calling in a customer service engineer. You will find
the numbers on the ratings plate on the inner side of the front flap.
3
A fault, what to do?
CAUTION:
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.
3.1
Faults that the customer can troubleshoot himself
If the fault could not be eliminated, please call customer service.
3.2
Faults that the customer service specialist should troubleshoot
3.3
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.
“°C” flashes 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.
