Set Appliance State:

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

Observation:

Preheat switched OFF (ECO button illuminated) A.S.A.P after power reinstated.
Allow the boiler to run until system starts to warm, then remove CH demand.
Does the pump continue to run for approximately 3 minutes?