Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
Selector switch to hot water
DHW temperature selector to maximum
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Observation:

Does the ignition sequence commence and is sparking present at the electrode?
Note:
Please ensure that you see sparking between electrodes, sparking may be heard but if it is not seen do not select the "Sparking present" option below.