• Always use cookware with a clean base.
• Scratches or dark stains on the surface
have no effect on how the hob operates.
• Use a special cleaner suitable for the
surface of the hob.
• Use a special scraper for the glass.
7.2 Cleaning the hob
• Remove immediately: melted plastic,
plastic foil, sugar and food with sugar,
otherwise, the dirt can cause damage to
the hob. Take care to avoid burns. Use a
special hob scraper on the glass surface
at an acute angle and move the blade on
the surface.
• Remove when the hob is sufficiently
cool: limescale rings, water rings, fat
stains, shiny metallic discoloration. Clean
the hob with a moist cloth and a non-
abrasive detergent. After cleaning, wipe
the hob dry with a soft cloth.
• Remove shiny metallic discoloration:
use a solution of water with vinegar and
clean the glass surface with a cloth.
8. TROUBLESHOOTING
WARNING!
Refer to Safety chapters.
8.1 What to do if...
Problem Possible cause Remedy
You cannot activate or operate
the hob.
The hob is not connected to an elec‐
trical supply or it is connected incor‐
rectly.
Check if the hob is correctly connected
to the electrical supply.
The fuse is blown. Make sure that the fuse is the cause of
the malfunction. If the fuse is blown
again and again, contact a qualified
electrician.
Residual heat indicator does not
come on.
The zone is not hot because it oper‐
ated only for a short time or the sen‐
sor is damaged.
If the zone operated sufficiently long to
be hot, speak to an Authorised Service
Centre.
8.2 If you cannot find a solution...
If you cannot find a solution to the problem
yourself, contact your dealer or an
Authorised Service Centre. Give the data
from the rating plate. Give also three digit
letter code for the glass ceramic (it is in the
corner of the glass surface). Make sure, you
operated the hob correctly. If not the
servicing by a service technician or dealer
will not be free of charge, also during the
warranty period. The information about
guarantee period and Authorised Service
Centres are in the guarantee booklet.
9. TECHNICAL DATA
9.1 Rating plate
Model ZHRN640K PNC 949 492 502 00
Typ 60 PAD 52 AO 220 - 240 V / 400 V 2N 50 - 60 Hz
10 ENGLISH