Low
4 green flashes on Baxi Titanium

Your boiler has experienced a brief moment where its electronic brains struggled to talk to each other, but it should fix itself automatically.

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 a few minutes for the boiler to complete its automatic self-reset processIf the lights continue flashing, switch the power to the boiler off and back on againEnsure any external room thermostats or timers have fresh batteries and a clear signal

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Related fault codes

E160View →5 green flashesView →

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