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

Typical repair cost for the Baxi Section A fault is £80-180 including labour.

Section A High

Baxi Section A Fault Code

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

Your boiler is not receiving any electrical power from the main supply or has a blown internal fuse, leaving the unit completely unresponsive.

Also written as SECTIONA — same fault.

The Baxi Section A fault code means: your boiler is not receiving any electrical power from the main supply or has a blown internal fuse, leaving the unit completely unresponsive.. It appears on 2 Baxi models in our database.

Technical description: No 230V at main terminals L and N, main terminal fuse, or selector terminals

Typical repair cost £80-180 (including labour)

DIY fix possible

Check if other appliances in the house have powerCheck your main consumer unit (fuse box) to see if a circuit breaker has trippedEnsure the boiler’s external isolation switch (fused spur) is turned on and its fuse hasn't blown

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Baxi models that show the Section A fault code

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

Source

Baxi Section A 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