Set Appliance State:

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

Observation:

CLICK HERE BEFORE CARRYING OUT THIS TEST
Apply a CH demand to the appliance.
Allow boiler to fire and reach a working temp of around 50°C.
Remove demand and allow boiler to shut down.
Reinstate the CH demand.
Does the anti-cycle operate as the information contained in link above?