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

Typical repair cost for the Alpha Section A fault is £120-250 including labour.

Section A High

Alpha Section A Fault Code

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

Your boiler is failing to receive a consistent electrical power supply, which means it cannot turn on or heat your water.

Also written as SECTIONA — same fault.

The Alpha Section A fault code means: your boiler is failing to receive a consistent electrical power supply, which means it cannot turn on or heat your water.. It appears on 1 Alpha model in our database.

Technical description: 240 V at Main terminals L and N, Main terminal fuse, Both sides of suppressor, or PCB terminals 27, 28

Typical repair cost £120-250 (including labour)

Engineer required

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

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Alpha models that show the Section A fault code

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

240XE Repair: £120-250

Source

Alpha Section A fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026