Set Appliance State:

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

Observation:

To disable Basic Adjust Mode hold the heating     arrow and hot water     arrows for 5 seconds, Full Adjust Mode should then be displayed.
Ensure DHW preheat is switched Off (ECO displayed), if required press ECO button for 2 seconds till ECO is displayed (preheat Off), all tests are conducted with the appliance in ECO mode unless stated otherwise.
ECO displayed (preheat Off) return to Observation Boiler Self Check CLICK HERE