Zanussi FM15 Instructions For The Use And Care page 14

Important
Because the grill element is in the top of
the lower oven, the door must be left
ajar when grilling.
This means that the escaping heat from
the grill could overheat the upper oven
door and the control panel, so to prevent
this happening it is essential that the
heat deflector provided to protect the
rest of the appliance is in place before
the grill is switched on.
The deflector is put in place as shown in
Fig. 9.
To use the grill
Open the door and put the heat deflector
in position.
Turn the oven control (see Fig. 7) to E)
and then set the grill control to the heat
setting required.
When grilling is over remove the heat
deflector and shut the door.