Set Appliance State:

Mains Power Off
CH Demand
Thermostat turned to Max
Gas On
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Allow the boiler to execute its ignition sequence and the burner to ignite.
Allow the boiler to run for approximately 10 minutes.
Does the burner cut out when the thermostat is turned down and re-ignite when it is turned up.