How much does it cost to fix Baxi error code Ld?

Typical repair cost for the Baxi Ld fault is £150-300 including labour.

Ld High

Baxi Ld Fault Code

Q: What does the Baxi Ld fault code mean?

Your boiler has detected that the water inside it has become dangerously hot and has shut itself down to prevent damage or safety risks.

Also written as LD — same fault.

The Baxi Ld fault code means: your boiler has detected that the water inside it has become dangerously hot and has shut itself down to prevent damage or safety risks.. It appears on 1 Baxi model in our database.

Technical description: Flow Temp Overheat Lockout

Typical repair cost £150-300 (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 Ld fault code

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

130 HE (range) Repair: £150-300

Source

Baxi Ld 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 27 April 2026