Siemens DE 1821515 Installation And Operating Instructions Manual page 12

A fault, what to do?
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.
Fault
Water flow-rate is too low.
The desired water temperature is
set, but it is not reached.
The display is blank
The water is not warm.
From time to time, cold water
flows out.
The set temperature, for instance
41.0 °C flashes. The temperature
of the water leaving the tap is
higher than the set temperature.
Winter operation:The desired wa-
ter temperature leaving the tap is
no longer reached.
E02
E03–E04
E05–E07
E08
12
en
Cause
The filter in either the water tap or
the showerhead is clogged.
The filter in the corner regulating
valve is clogged.
The continuous-flow heater is
connected to a thermostatically-
controlled water faucet.
The fuse in the house electrical in-
stallation has triggered/blown.
The appliance's automatic circuit
breaker has been tripped.
The fuse in the house electrical in-
stallation has tripped/blown.
The air sensor in the appliance de-
tects air in the water and momen-
tarily switches the heating element
off.
The temperature of the water
supplying the continuous-flow
heater is higher than the set tem-
perature (e. g. due to pre-warmed
water supplied from a solar water
heater).
The supply temperature has
reduced.
No thermostatic premixer available
The supply temperature to the
continuous-flow heater is higher
than 55 °C (e. g. due to pre-warmed
water supplied from a solar water
heater).
The supply temperature to the
continuous-flow heater is higher
than 55 °C (e. g. due to pre-warmed
water supplied from a solar water
heater).
Temperature sensor defective
Electronic malfunction
Frost damage
The water supply sensor measures
a temperature on ≤ 0 °C.
Solution
Remove the filter and either
clean it or descale it.
Get a servicing expert to clean the
filter.
Set the temperature on the continu-
ous-flow heater to "60 °C".
Check the fuse in the house electri-
cal installation.
Get the appliance's automatic
circuit breaker checked by an
electrician.
Check the fuse in the house electri-
cal installation.
After a few seconds, the continu-
ous-flow heater automatically goes
back into operation.
The thermostatic premixer in the
domestic supply must be set ac-
cordingly to lower temperatures.
Reduce the water flow on the taps
until the desired water temperature
is reached.
Install a thermostatic premixer in
the domestic supply.
The thermostatic premixer in the
domestic supply must be set ac-
cordingly to lower temperatures.
Please contact customer service.
Please contact customer service.
The appliance is defective! Switch
off the water supply immediately
and disconnect the appliance from
the electrical supply (also refer to
the safety instructions)
Please contact customer service.
Who
Customer
Servicing
expert
Customer
Customer
Servicing
expert
Customer
Continuous-
flow heater
automati-
cally resolves
problem
Customer
Customer
Customer
Customer
Service
Customer
Service
Customer/
Servicing
expert