Set Appliance State:

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

Observation:

Enter the installer mode and access L2 - A1 for the low loss header setting.
(click here for information on how to do this)
If there is no low loss header fitted on the system this should be set to 0.
If a low loss header is fitted refer to Table 19 in the manufacturer’s instructions to ensure the setting is appropriate for the installation.
Are the settings appropriate?
Note:
It is not possible to access L2 - A3 to amend the settings unless L2 - A1 is set to something other than 0.