KKT KOLBE IND7704DRAFT Bedienungsanleitung Seite 90

Troubleshooting
Problem
Fan noise
Scratches on the
glass surface
Malfunction /
Display of an error
code
38
Possible cause
A cooling fan integ-
rated in the hob pre-
vents the electronics
from overheating.
If necessary, it conti-
nues to run even after
the hob is switched
off.
Metal abrasion or
other soiling may ap-
pear like scratches.
Unsuitable cookware
is used.
Unsuitable cleaning
agents or utensils are
used.
Fluctuations in the
power supply system
Technical error /
Code meaning see
following table
What to do
This is normal and necessary for error-
free operation.
Do not disconnect the appliance from
the power supply while the fan is
running.
Glass ceramic is more abrasion
resistant than steel. Abrasion marks
caused by this do not represent
damage and can be removed with an
appropriate cleaning agent.
Use cookware with a clean, even
and smooth bottom (see chapter on
cookware).
Only use cleaning agents and uten-
sils suitable for glass surfaces (see
cleaning chapter).
Disconnect the hob from the power
supply for about 20 minutes (switch
off the fuse) and then switch it on
again.
Note down the error code,
disconnect the hob from the power
supply and contact a certified elec-
trician.