How much does it cost to fix Alpha error code 80?

Typical repair cost for the Alpha 80 fault is £250-450 including labour.

80 High

Alpha 80 Fault Code

Q: What does the Alpha 80 fault code mean?

Your boiler has detected an internal communication problem with the part that controls the gas supply, meaning it is unable to safely light the flame to heat your home.

The Alpha 80 fault code means: your boiler has detected an internal communication problem with the part that controls the gas supply, meaning it is unable to safely light the flame to heat your home.. It appears on 10 Alpha models in our database.

Technical description: Block - gas valve driver issue. A fault has occurred on the PCB function that controls the gas valve

Typical repair cost £250-450 (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 80 fault code

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

Source

Alpha 80 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