Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Allow burner to ignite and establish.
Using a telegan check for any fumes near
the burner, heat exchanger, electrode
and flue seals for the appliance.
Also inspect visually for any signs of
corrosion or staining.