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10 Trouble-shooting
43
… the following displays flash alternately
and
… the clock is not running correctly
Possible cause Solution
• An interruption in the
power supply.
➤ Cancel the error message by pressing the
button.
➤ Disconnect the power supply for
about 1 minute.
➤ Reconnect the power supply.
➤ If the error message appears again, note
down the error message in full along with
the
serial number (FN) (see identification plate).
➤ Disconnect the power supply.
➤ Call Customer Services.
Possible cause Solution
•Irregular mains
frequency.
➤ Switch off the mains synchronisation.
When mains synchroni-
sation is switched off:
• internal pulse generator is
imprecise.
➤ Call Customer Services.
xx xx
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