What does the Worcester Bosch 5-A1 fault code mean?

Your boiler has detected that the water temperature has exceeded the maximum safe limit, causing it to shut down to prevent damage.

How much does it cost to fix Worcester Bosch error code 5-A1?

Typical repair cost for the Worcester Bosch 5-A1 fault is £120-350 including labour.

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

Maximum flow temperature: 30...82°C.

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.

Sludge build-up — needs flushing, not bleeding.

7 signs repair isn't worth it anymore.