What does the Alpha 49 fault code mean?

Your boiler has detected that the water returning from your radiators is too hot, causing the system to shut down for safety.

How much does it cost to fix Alpha error code 49?

Typical repair cost for the Alpha 49 fault is £120-£350 including labour.

Ensure all radiator valves (TRVs) are fully open

Return sensor high temperature intervention

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

Sludge build-up — needs flushing, not bleeding.

Each noise points to a different fault.

7 signs repair isn't worth it anymore.