Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to Resistance 
Remove the ignition lead from the main PCB and from the spark electrode
Measurement:
Measure the resistance of the ignition lead from one end to the other.
Expect approximately 1kΩ.
Also visually inspect the condition of the lead.
Is the lead in good condition and is the resistance measured as expected?
Expect approximately 1kΩ.
Also visually inspect the condition of the lead.
Is the lead in good condition and is the resistance measured as expected?
Isolate as per TOPs P4
and refit as necessary