Belling GOURMET 900 DF Service Manual page 73

YES
Has customer check
electric supply to
hob?
YES
Send engineer and order ignition
switch and spark generator (these
could be combined as one so you
may just need the generator).
Faulty ignition (Push button ignition)
Customer states no ignition to burner/s
Is more than one
burner affected?
YES
Are all four
burners affected
NO
Send engineer order
electrodes required and
possibly a spark generator
Gas Hob
NO
Can customer see a
spark at the burner?
Send engineer and
order electrode
YES
NO
Ask customer to clean
and make sure burner
NO
skirt and cap are fitted
correctly. Did this
work?.