Set Appliance State:

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

Observation:

Confirm the boilers DS number is set correctly.
This is diagnostic code "d.93".
Click here for how to enter and adjust diagnostic codes.
DS Number should conform to the table:
Appliance OutputDS Number
24kW37
28kW 38