11 Trouble-shooting
Display
Possible cause
Solution
F… /E…
see instructions /
SN XXXXX XXXXXX
▪
Various situations can
lead to an «F» mes-
sage.
▸ Cancel the error message by press-
ing the
button.
If the error message persists:
▸ Switch the power supply off for
about 1 minute.
▸ Switch the power supply back on
again.
▸ Cancel the error message by press-
ing the
button.
▸ Restart the programme.
▸ If the error appears again, note
down the error message and SN.
▸ Turn off the water tap and the power
supply.
▸ Call Customer Services.
U… /E...
see instructions
▪
Faulty electrical connec-
tion.
▪
Overvoltage.
▸ Cancel the error message by press-
ing the
button.
If the error message persists:
▸ Switch the power supply off for
about 1 minute.
▸ Switch the power supply back on
again.
▸ Cancel the error message by press-
ing the
button.
▸ Restart the programme.
▸ If the error appears again, note
down the error message and SN.
▸ Switch the power supply off.
▸ Have the electrical installation
checked by an expert.
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