How much does it cost to fix Alpha error code 38?

Typical repair cost for the Alpha 38 fault is £100-280 including labour.

38 High

Alpha 38 Fault Code

Q: What does the Alpha 38 fault code mean?

Your boiler has started an ignition process but lost its flame unexpectedly, causing the system to shut down for safety.

The Alpha 38 fault code means: your boiler has started an ignition process but lost its flame unexpectedly, causing the system to shut down for safety.. It appears on 25 Alpha models in our database.

Technical description: Loss of flame rectification

What causes the Alpha 38 fault?

This fault occurs when the boiler successfully lights the burner but fails to detect a consistent flame signal shortly after. The most common reasons are a worn-out sensing probe that can no longer 'see' the fire, or an unstable gas supply preventing a steady flame from being maintained.

This fault can appear more frequently during the first cold snap of autumn when the gas valve or electrodes struggle to operate after sitting idle all summer.

Typical repair cost £100-280 (including labour)

Engineer required

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

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Alpha models that show the 38 fault code

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

Source

Alpha 38 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