Observation:

Boiler has several options within its internal diagnostics to assist in fault finding.
To access the fault finding:
  • Ensure appliance is not in self check mode.
        (press reset button to skip if necessary)
  • Press the " i " button for approx. 10 seconds until display shows 00
  • Press the DHW +/- buttons to move through options 00 to 10
  • Press the CH + or - button to enter selected option.
    Diagnostic Numbers Correspond to:
    00 = Flow Temperature
    01 = Return Temperature
    02 = DHW Temperature
    03 = N/A to boiler
    04 = N/A to boiler
    05 = ON or OFF is flame detected
    06 = Outdoor Sensor Temperature
    07 = Current Fan Speed
    08 = System Pressure
    09 = Flame Current
    10 = N/A to boiler