High rate LED - yellow Medium

Baxi High rate LED - yellow Fault Code

Also written as HIGHRATELEDYELLOW — same fault.

The Baxi High rate LED - yellow fault code means: your boiler is stuck running at its highest power setting and is not modulating down as it should.. It appears on 1 Baxi model in our database.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: Boiler firing at maximum rate
Typical repair cost £120-280 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Baxi models that show the High rate LED - yellow fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi High rate LED - yellow fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026