Set Appliance State:

Mains Power Off
Selector Switch in HW position.
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Observation:

Depress the Gas Valve Control Knob for at least 20 seconds
(It takes approximately 20 seconds for gas to be available at the Pilot Burner).
Does Pilot ignite?