Assistance in the event
of malfunction
Repairs must only be carried out by an authorised professional.
You may be able to solve some malfunctions yourself. First check if there
has been a problem with the way it is being used. Repairs during the
guarantee period are not exempt from costs in the case of an error in
the way it is being used or if you have not noticed one of the following
situations.
What to do if...
... the sensors or lights do not work.
Check: Is the socket plugged in? Is the fuse in good condition? Has there
been a power failure? Is the child safety lock on?
... one or several sensors do not react to contact but it is possible to
connect the lighting.
Possible cause: The sensors continuously adapt their sensitivity to
ambient conditions. In unfavourable circumstances e.g. if someone leans
on them for a long period of time, it may take several minutes until the
sensors react again.
Wait approximately 15 seconds or disconnect and reconnect the fuse.
Repeat the procedure again if necessary.
The keys will then be reset and will react again on contact.
... one or several sensors do not react after the fuse has been discon-
nected and then reconnected.
Possible cause: Faulty sensor key or element.
After disconnecting and reconnecting the fuse twice, disconnect the fuse
again and inform the after-sales service.
... The glass in the door is broken.
Switch off the oven and ask the after-sales service to change the door.
... The door gasket is damaged.
Replace the door gasket. See 'Change the door gasket'.
Do not use the oven if the door gasket is damaged.
... the oven light is not working
The oven can still be used. Change the halogen lamp as soon as possible
– make sure the oven is off and cold. See 'Changing the oven light'.
...there is a strong smell.
Regenerate the ökotherm® catalyst. See 'Regeneration of the ökotherm®
catalyst'.
there is a strong smell of vinegar while cooking.
You will notice a vinegary smell when preparing dishes containing alcohol
or yeast on hot air settings. If the smell is unpleasant, use a setting that
does not include the fan, such as top/bottom heat.
... there are fruit juice or egg white stains on enamelled parts.
This is a minor change in the enamel that cannot be turned to its original
state.
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Maintenance
Changing the oven light
Changing the halogen lamp
– Remove the shelf runners.
– Remove the glass cover carefully by
levering it with a screwdriver.
– Remove the halogen lamp from the
interior.
– Insert the new halogen lamp using a cloth or paper towel.
– Replace the glass cover by pressing until it locks in.
– Reassemble the shelf runners.
Caution The halogen lamps become very hot when they are on for a
long period of time. Only change the lamps when they are cold.
Caution, danger of electric shock Before opening the cover of the
oven lamp you must disconnect the appliance from the electrical
supply. Disconnect or unscrew the fuse, or unplug from the power
source.
Only replace the halogen lamps with the same type. New halogen
lamps can be purchased from the Küppersbusch After-Sales Service.
Do not touch the halogen lamps with your bare hands. Fingerprints
will burn on the surface of the glass and reduce both the luminosity
and its useful life.
When the glass cover does not immediately loosen (for example,
because of the dirt after prolonged use), levering it out, may cause
the glass to crack. If this happens, hold a cloth on the glass cover so
as to catch the glass.