Observation:
This boiler is equipped with a set of on board diagnostics which can assist during fault finding. It is recommended that a note is taken on how to access these as reference will be made to them during the tests.
1) Press and hold the MODE button on the display for 5 seconds
(0 appears in the screen).
2) Release the Mode button.
3) Scroll using the +/- buttons to 96 (pressing - is quickest).
4) Press the MODE button (d0 will be displayed).
The number shown in the lower part of the screen is the diagnostic number and the upper number is the actual value read. Use the + and - buttons to scroll through the available diagnostics.
5) Once you have finished press and hold the MODE button again for 5 seconds and the display should return to normal.
1) Press and hold the MODE button on the display for 5 seconds
(0 appears in the screen).
2) Release the Mode button.
3) Scroll using the +/- buttons to 96 (pressing - is quickest).
4) Press the MODE button (d0 will be displayed).
The number shown in the lower part of the screen is the diagnostic number and the upper number is the actual value read. Use the + and - buttons to scroll through the available diagnostics.
5) Once you have finished press and hold the MODE button again for 5 seconds and the display should return to normal.
