What does the Alpha 61 fault code mean?

Your boiler is struggling to pump water around your radiators because there is likely air trapped inside the system or a blockage in the pipes.

How much does it cost to fix Alpha error code 61?

Typical repair cost for the Alpha 61 fault is £100-250 including labour.

Check that all your radiator valves are fully open

Restricted CH flow due to air or a circuit restriction

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

Almost always a stuck diverter valve on combis.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.