What does the Atag b30 fault code mean?

Your boiler has temporarily stopped because the water is heating up too quickly or isn't circulating around your radiators fast enough.

How much does it cost to fix Atag error code b30?

Typical repair cost for the Atag b30 fault is £100-£350 including labour.

Check that all radiator valves (TRVs) are turned to the highest setting

Boiler block: Difference between flow and return 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.

Sludge build-up — needs flushing, not bleeding.

Each noise points to a different fault.

7 signs repair isn't worth it anymore.