Set Appliance State:

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

Observation:

Turn Gas Control Valve Knob clockwise to extinguish Pilot. Listen for Thermo Electric Valve (TEV) to trip out (this can take up to 30 seconds).