Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Continuity 
Remove the ignition lead from the PCB
Remove the ignition lead from the spark electrode
Remove the ignition lead from the spark electrode
Measurement:
Measure the resistance between either end of the ignition lead.
Expected resistance approximately 1 KOhms
Also visually inspect the condition of the lead.
Expected resistance approximately 1 KOhms
Also visually inspect the condition of the lead.
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Isolate as per TOPs P4
and refit as necessary