Operating instructions

18 Trouble-shooting
80
… there is a change in the noise of the fan
… the clock is not running correctly
Possible cause Solution
• Ventilation of cooking
space and cooling-down
of appliance occur as
required.
This is normal and reduces the energy
consumption.
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.