Installation settings 11. settings, Troubleshooting, Maintenance – STIEBEL ELTRON FCR 18-28 User Manual
Page 19: 1 temperature, 2 limiting the temperature selection, 1 checking the safety assembly, 2 descaling the flanged immersion heater

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FCR 28 | FCR 18 |
19
InStallatIOn
Settings
11. settings
11.1 temperature
appliance type with temperature selector inside the control
panel
85°C
60°C
35°C
26
�02
�7
9�
002
8
Factory setting: 60 °C
11.2 limiting the temperature selection
appliance type with external temperature selector
You can adjust the temperature selection limitation beneath the
temperature selector.
Factory setting: 60 °C
f
f Set the temperature selector to "cold" and isolate the appli-
ance from the power supply.
f
f Remove the temperature selector and the control panel
cover.
f
f Loosen the two screws from the outside and pull the thermo-
stat down to remove.
f
f Once you have removed the limiter disc from the thermostat
axis, the maximum temperature can be reached.
f
f Tighten the thermostat screws again and replace the tem-
perature selector and control panel cover.
12. troubleshooting
Fault
Cause
Remedy
The water does not
heat up.
The high limit safety cut-
out has responded because
the controller is faulty.
Replace the thermostat and
press the high limit safety
cut-out reset button.
The high limit safety cut-
out has responded because
the temperature has fallen
below -15 °C.
Press the reset button.
A heating element is faulty.
Replace the heating ele-
ment or flanged immersion
heater.
The high limit safety cut-
out has responded because
an indirect coil in the same
cylinder is set too high.
Limit the maximum tem-
perature of the indirect
coil.
The safety valve drips
when the heating is
switched off.
The valve seat is contami-
nated.
Clean the valve seat.
1
26
�0
2�
79
�0
01
5
1 High limit safety cut-out reset button
13. maintenance
WARNING Electrocution
Before any work on the appliance, disconnect all poles
from the power supply.
13.1 checking the safety assembly
f
f Check the safety assembly regularly.
13.2 descaling the flanged immersion heater
f
f Descale the flanged immersion heater only after it has been
removed.
13.3 replacing the heating elements and protective
pipe
f
f When installing heating elements or a protective pipe, en-
sure that the components are electrically isolated from the
flange.