What does the Worcester Bosch 212 fault code mean?

Your boiler is shutting down because it is heating up much faster than it can circulate the water, which often points to a blockage or a pump issue.

How much does it cost to fix Worcester Bosch error code 212?

Typical repair cost for the Worcester Bosch 212 fault is £150-300 including labour.

Manufacturer manual

Rise in temp. of safety or heating flow sensor too fast

From this model's manual

Verified against the Worcester Bosch/Worcester Bosch 2000 Gc2000iw 2019 installation & service manual, page 79.

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

Boiler cover options

A cover plan would handle faults like 212: no call-out fees, no surprise bills.

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Seeing a different code? Every code this model can display, in one place.

On a combi it is usually the diverter valve. On a system boiler, the motorised valve.

Almost always a stuck diverter valve on a combi.

Each noise points to a different fault.