Low
4 green flashes on Baxi EP

Your boiler is having a temporary 'conversation' issue between its internal computer parts and will usually fix itself shortly.

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 for the boiler to self-reset as this is often a temporary glitchTurn the power to the boiler off and back on at the fused spur switchMonitor the lights to see if the flashing sequence changes or stops

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