Low
4 green flashes on Baxi Suprima 60

Your boiler is having a temporary 'handshake' problem between its internal electronics which should resolve 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.

What the manual says

Manufacturer manual

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

From this model's manual
This code was read directly from the manufacturer service manual for this model.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Wait for the boiler to self-reset as this is often a temporary glitchIf the light continues flashing, turn the power to the boiler off and back on at the main fused spur switchMonitor the boiler to see if the fault frequently recurs

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