Set Appliance State:

Gas Off
Isolate Mains Power to appliance as per TOPs P4
Disconnect the ignition leads from the spark generator
and position approx 2mm from the spark generator
with the use of a crocodile clip as shown in the picture
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Reset appliance as necessary, allow appliance to
complete its self check and ignition sequence to begin.
Shortly after the fan runs much louder sparking should be
heard from the spark generator, it should also be visible.
As the boiler will not ignite it will go to lockout after 5 attempts at ignition.
Once you are confident whether sparking is present or not
click HERE to return to the burner ignition page.