Technical description
Time inputs - This indicates the status of the optional fascia mounted controls: 0 = CH off, DHW off, 1 = CH off, DHW on, 2 = CH on, DHW off, 3 = CH on, DHW on
DIY fix possible
Check your external programmer or timer dial on the front of the boilerAdjust the settings to your desired schedule for central heating and hot waterIf the code persists despite settings being active, toggle the timer switch off and on to reset the display
Find a Gas Safe engineer
Search the official register →