Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Observation:

Thoroughly check electrodes for cracks and damage
to the electrode ceramics, and good general condition.
Check for correct spark gap.
Gap should be 4.5mm +/- 0.5mm.

Note:

Although the electrode assembly may be operational, due to it being disturbed the entire electrode assembly must be replaced as per Technical Safety Bulletin.