Set Appliance State:

Mains Power Off
CH Demand
CH temperature control to max
Gas On
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Reset boiler if required.
During the ignition sequence can the burner be heard to ignite?
Note.
1. The burner may only ignite for a few seconds, then ignition starts again.
2. The boiler will go to ignition lockout (3 red flashes) after 5 attempts to ignite,
reset boiler as required.