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 boiler if required
Observe the burner through the sight glass.
Does the burner ignite and establish correctly?
If a fault code other than ALL 06 appears, you must click HERE to avoid misdiagnosis.
Note:
The appliance will have 3 attempts of ignition before lockout occurs, reset boiler as required.