Set Appliance State:

Gas Off
Isolate Mains Power to appliance as per TOPs P4
CH Demand
Disconnect the ignition lead from the spark electrode and
position it safely as shown in the image below
(Ignition lead just off the spark electrode)
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Reset appliance if required.
(Press reset button once then release)
Allow fan to run and ignition sequence to commence.
As the appliance goes through repeated ignition attempts
can sparking be observed between the ignition lead and
the spark electrode ?
Note:
Appliance may enter lockout during test, reset as necessary
until test complete.