Zanussi ZGF 6420 Instruction Booklet page 14

Ignition System / Gas Ignition
Ignitor does not spark
NO
Check plug top fuse
and
replace if necessary
Check polarity and
earth continuity of
supply point
Check earth continuity
of appliance
Check continuity from 'N' on the
mains connector block and "O" on
the ignitor unit
Check continuity from 'L' on the
mains connector block and the
taps ignition switches
Check continuity from ignition
switches connector to ignitor unit
14
YES
Check continuity from the tip
of each electrode to the
terminals 1 to 4 on the ignitor
unit
Check for breaks in the
insulation
of the HT leads
Change the taps
ignition switches
Change the ignitor unit
Check gas supply at
burner
Light burner manually
Check by pass
simmer
Check position of the
electrode
Check fitting of burners