Set Appliance State:

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

Observation:

After power is reinstated the display should show a number
(software version of PCB, does not affect model)
However a fault code could also be shown, this test is only to establish if the display operates correctly.
Does the digital display operate correctly? (Not blurred, jumbled or distorted).