Set Appliance State:

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 and allow the boiler to complete its self check.
Activate Test t1 in the display menu
(for information on how to access the test menu click here).
Sparking should then be observed for approximately 2 minutes between the spark generator and the lead.