Problem, Check, Z C G I D, What is wrong and why

Problem
Having difficulty cleaning any part of the cooker.
Check
l
Check that the instructions for care and cleaning, beginning on page
28 are being followed.
Problem
The oven light will not work.
Check
l
If the light does not work you probably need to replace the bulb. To
do this see instructions on page 37. 
l
Check there is not a fault with the electrical supply. Check this by
pressing the ignition button. If you cannot hear sparking there is
probably a fault. 
l
First, check the socket by trying out another electrical appliance in it,
if that works renew the fuse in the plug. Use a 3 amp fuse. If the fuse
'blows' again this indicates that there is a fault on the cooker. Do not
use a fuse with a higher rating than 3 amps. Do not carry out further
electrical work. Unplug the cooker and inform your installer.
IMPORTANT:  If you call out an engineer to a possible fault listed here,
or to repair a fault caused by incorrect use or installation a charge will be
made, even if the appliance is in guarantee.
39
Z C G   I D 
What is wrong and why?