Set Appliance State:

Mains Power Off
NO Demands
Ensure warm start turned OFF
Ensure CH Turned OFF
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Reset the appliance.
(Press reset button once then release)
Allow the appliance to complete its 2 minute self check.
At the end of the self check programme the boiler
should be at rest without the fan or pump running.