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9 Trouble-shooting
... in the display appears
FXX / EXX See instructions
FN XXXXX XXXXXX
Possible cause Solution
• Various situations can lead
to a «F message».
► Cancel the error message by pressing the
button.
► Turn the power supply off for about 1 minute
and then turn it back on again.
► Next select a programme.
► If the error appears again, note down the er-
ror message in full and the serial number
(FN) and then turn off the power supply.
► Call Customer Services.
... in the display appears
U1 / E42 See instructions
FN XXXXX XXXXXX
Possible cause Solution
• Overvoltage
► Cancel the error message by pressing the
button.
► Turn the power supply off for about 1 minute
and then turn it back on again.
► Next select a programme.
If the error appears again:
► Switch the power supply off.
► Have an electrician check the house installa-
tion.
If the error appears again:
► Note down the error message in full and the
serial number (FN) and then disconnect the
power supply.
► Call Customer Services.
57
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