Set Appliance State:

Mains Power Off
Turn Hot Water Tap On
Selector switch to hot water
DHW temperature selector to maximum
WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure
Mains Power On

Observation:

With DHW flow rate of approximately 10.0 l/min (2.2 gall/min) is there a temperature rise of approximately 35º C?