Set Appliance State:

Mains Power Off
Gas On; Pilot On
Turn Hot Water Tap On
Selector Switch in summer position
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

After approximately 5 seconds does main burner
increase to high flame.
A 'click' will be heard from the Black Solenoid.