Neff T66S66N0 - Manual (Page 9)

For dual double flame burners, the inner and outer
flames can be controlled separately.
The available power levels are as follows:
Inner and outer flame on full power.
Outer flame on minimum, inner flame on full power.
Inner flame on full power.
Inner flame on minimum.
It is normal to hear a whistling noise while the burner is
operating.
When it is first used, it is normal for the burner to give off
fumes; this does not pose any risk and does not indicate
a malfunction; they will disappear in time.
Keep the burner as clean as possible. If the ignition
sparkers are dirty, they will not light properly. Clean them
periodically using a small non-wire brush. Bear in mind
that the ignition sparkers must not suffer any serious
impacts.
An orange-coloured flame is normal. This is caused by
the presence of dust in the atmosphere, spilt liquids, etc.
The kitchen will become hot and humid when this
gas appliance is used. You must therefore ensure that
the kitchen is well-ventilated. Either keep the natural
ventilation apertures open, or install an extractor hood.
Warnings
8
A few seconds after the burner is switched off, a sound
(thud) will be produced. This is not a fault- this means
that the safety device is no longer operating.