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 & lead (see note 1.)
Expected resistance 4.8 kOhms.
Confirm continuity of electrode & lead (see note 1.)
Expected resistance 4.8 kOhms.

Isolate as per TOPs P4
and refit as necessary