Set Appliance State:

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

Observation:

Allow boiler to ignite and run for DHW demand.
Is the DHW operation satisfactory?
Flow rates higher / lower than specified will result in a higher or lower temperature rise, this must be taken into account when selecting the outcome of this test.
Note.
1. To investigate a poor DHW flow rate CLICK HERE.
2. If a fault code occurs during operation CLICK HERE
.