Low
閃 neon flashing on Baxi Combi Elite

Your boiler is currently warming itself up in the background to ensure you have hot water ready and available when you turn on a tap.

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 operational light.Wait a few minutes for the preheating cycle to finish.If you wish to stop this occurring, check your user manual to disable the 'Pre-heat' or 'Comfort' setting.

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Avoid the next call-out bill

A cover plan would handle faults like 閃 neon flashing: no call-out fees, no surprise bills.

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