Set Appliance State:

Mains Power Off
CH Demand
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Press reset to cancel purge cycle countdown.
Allow burner to ignite and establish.
Remove the heating demand by switching summer/winter selector to Summer.
Does the pump continue to run for 10 seconds
after the demand has ceased?