Low
01 on Biasi Dina

Your boiler is currently running a special system test used by engineers and is operating at its lowest power setting.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Activation of the chimney sweep function at minimum output (under P06)

DIY fix possible

Wait approximately 15 minutes for the automated test cycle to finishTurn the boiler mode selector knob to 'Off' and back to 'Winter' or 'Summer' to reset the modePress the 'Reset' button if the screen does not return to normal temperature display

Find a Gas Safe engineer
Search the official register →

Related fault codes

Related guides you might find useful