Set Appliance State:

Turn Hot Water Tap On
DHW temperature set to MAX
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Measurement:

Allow self-check to complete and the appliance to ignite and run for the DHW demand.
With a flow rate of :
Heatline C24: 11.86 litres / min
Heatline C28: 13.12 litres / min
Is there a temperature rise of approximately 30°C is operation satisfactory?
Note.
1. A flow rate less stated above will result in a higher temperature rise. To investigate poor flow rate click HERE.
2. If fault code overheat occurs during DHW operation CLICK HERE