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

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

Section K High

Alpha Section K Fault Code

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

Your boiler's reset button is failing to send the signal required to restart the system, meaning the unit cannot be woken up from its current locked state.

Also written as SECTIONK — same fault.

The Alpha Section K fault code means: your boiler's reset button is failing to send the signal required to restart the system, meaning the unit cannot be woken up from its current locked state.. It appears on 1 Alpha model in our database.

Technical description: No continuity across terminals 1 and 3 on reset switch when pressed

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 K fault code

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

240XE Repair: £120-220

Source

Alpha Section K 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