Set Appliance State:

DS is the Device Specific number and should
correspond with the boiler model
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Access the level 2 diagnostics by following the instructions below.
Press and hold the MODE and + buttons for 5 seconds.
The display will change to a flashing ‘0’.
Use the ‘+’ button to scroll to 35 (This is the level 2 password).
Press and hold MODE for 5 seconds to confirm.
The display now shows a flashing L2 and the current diagnostic point 0 .
Use the + and - buttons to view the appropriate diagnostic number.
In this instance it is 93. Press MODE again to see the
appropriate value which should correspond with the table.
To exit the diagnostic menu, press the MODE and + buttons
at any time.
Is the DS number set correctly?