Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
ON/OFF switch in ON position
CH temp selector to MIN
DHW temp selector to MAX
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

With a DHW flow rate of approximately 9.8 litres/minute (2.2 Galls/min),
is there a temperature rise of approximately 35°C?
Is the operation satisfactory?