Set Appliance State:

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

Observation:

Once the functionality of the heating system has been confirmed, remove the demand for heat. The pump should overrun for a fixed time
NOTE:
The pump overrun time is adjustable in the On Board Diagnostics at d.1 between 2 and 60 minutes, factory default is 5min.