Set Appliance State:

Gas Off
Isolate Mains Power to appliance as per TOPs P4
Main switch in ON position
Remove Spark Electrode lead from rear of Spark Electrode, and place end of disconnected lead a short distance away from metal case, as shown in the image.
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Observation:

Depress the Gas Control Valve Knob, after approximately 5 seconds can sparking be seen?