Set Appliance State:

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

Observation:

Does the display illuminate and show either the flow temperature or a fault code?
Information:
This model will utilise the information available in the user display to speed up diagnosis.
If the boiler is set to "Basic Adjust Mode" some of this information will not be accessible.
To disable Basic Adjust Mode hold the heating     arrow and hot water     arrows for 5 seconds.
The user display on this appliance will display various information about
the appliance, any fault codes, if the appliance is lit or if it has a demand.
To access appliance status codes, press the info button.
Boiler setup parameters and test modes can be accessed by
holding down the info and reset buttons simultaneously.
Click HERE for more information on the test modes available for the appliance.
Click HERE for more information on the parameters and settings for the appliance.