Low
4 green flashes on Baxi Profile

Your boiler is having a temporary moment of confusion between its internal brains, but it should fix itself automatically in a few minutes.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Communication error between printed circuit board (PCB) and control. Temporary error, will self reset.

DIY fix possible

Wait up to 10 minutes for the boiler to automatically reset the communication errorTurn the power switch to the boiler off and back on again onceEnsure there is no heavy electrical interference appearing near the boiler casing

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Related fault codes

5 green flashesView →3 green flashesView →

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