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

Typical repair cost for the Alpha Section I fault is £120-220 including labour.

Section I High

Alpha Section I Fault Code

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

Your boiler is failing to light the flame or stay lit, meaning it cannot produce heat or hot water because it cannot detect a flame.

Also written as SECTIONI — same fault.

The Alpha Section I fault code means: your boiler is failing to light the flame or stay lit, meaning it cannot produce heat or hot water because it cannot detect a flame.. It appears on 1 Alpha model in our database.

Technical description: Flame sensing electrode and lead connections, Electrode position, or Ignition PCB

Typical repair cost £120-220 (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 I fault code

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

240XE Repair: £120-220

Source

Alpha Section I 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