Set Appliance State:

Ensure NO demands
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Reset the appliance if required (Press reset button once then release).
Allow the appliance to complete its self-check, this will take approximately 60 seconds.
At the end of the self check the appliance should be at rest without the fan or pump running and with the flow temperature displayed.
It is important to wait the full 60 seconds for the self check to complete even if the appliance appears to have finished within 60 seconds.