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11 Trouble-shooting
Note on when the temperature value is raised
If a temperature value (actual value) is 10 °C above the selected set value for more than
two hours, an acoustic signal is emitted for a limited time. The relevant zone and the
zone temperature flash in the display.
Confirming/Acknowledging warnings
▸ Touch any button.
▸ Further information: Trouble-shooting (see page 26)
When the Sabbath mode
is activated, there are no visual or acoustic warning
signals.
11
Trouble-shooting
This section lists faults that can be solved simply by following the instructions given. If
the fault cannot be remedied, please contact Customer Services. Before contacting Cus-
tomer Services:
▸ please note down
▪
the serial number (SN), which is shown on the identification plate),
▪
the error message in full (e.g. F10 / E19) shown in the display,
▪
the sequence of events that led to the fault.
Malfunction
Possible cause
Solution/Measures
Appliance is not
working.
▪
Mains voltage too high, er-
ror message U1.
▸ Have the electrical installation
checked by an expert.
▪
Control and/or process
data error, error message
F5, F6 or F7.
▸ Contact Customer Services.
▪
Interruption in the power
supply.
▸ Check the power supply.
▸ Change the fuse.
▸ Reset the automatic circuit
breaker.
▪
The fuse or circuit breaker
keeps blowing.
▸ Contact Customer Services.
▪
Appliance is faulty.
▸ Contact Customer Services.
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