How much does it cost to fix Baxi error code Section H?

Typical repair cost for the Baxi Section H fault is £120-280 including labour.

Section H High

Baxi Section H Fault Code

Q: What does the Baxi Section H fault code mean?

Your boiler is struggling to light its flame, meaning it cannot heat your water or radiators until the ignition problem is fixed.

Also written as SECTIONH — same fault.

The Baxi Section H fault code means: your boiler is struggling to light its flame, meaning it cannot heat your water or radiators until the ignition problem is fixed.. It appears on 2 Baxi models in our database.

Technical description: Ignition fault: ignition electrode/lead, spark gap, or igniter assembly

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 Section H fault code

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

Source

Baxi Section H 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