Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Remove electrode assembly from boiler
Measurement:
Thoroughly check the spark electrode for wear, contamination, cracks and damage, confirm electrode gap is 4mm +0.5mm.
Confirm continuity of electrode(see note 1.)
Expected resistance continuity (zero resistance).
Confirm continuity of electrode(see note 1.)
Expected resistance continuity (zero resistance).

Isolate as per TOPs P4
and refit as necessary