Set Appliance State:

Turn Hot Water Tap On
Gas On
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Reset the appliance if required.
(Press reset button once then release)
Approximately 5 seconds after the fan begins to run the burner should ignite and establish.
Once established a flame symbol should appear.
Does the burner ignite and establish correctly?
Note.
The appliance will have 3 attempts before lockout occurs. Reset as required.