Low
閃 neon flashing on Baxi Combi 80 Maxflue

Your boiler is currently preheating the internal water to ensure you get hot water quickly when you turn on a tap.

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

Preheating function starts (DHW preheating circuit)

From this model's manual
Verified against the Baxi Combi 80e installation & service manual.
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

No action is required as this is a normal operating function.Wait for the neon light to stop flashing once preheating is complete.If the light never stops flashing or the boiler fails to fire, try a simple reset.

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