What does the Alpha E77 fault code mean?

Your boiler has detected an electrical issue where too much current is flowing through its internal components, causing it to shut down for safety.

How much does it cost to fix Alpha error code E77?

Typical repair cost for the Alpha E77 fault is £150-300 including labour.

Current flow too high

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Each noise points to a different fault.

Safety-critical — turn off, read this.

7 signs repair isn't worth it anymore.