What does the Worcester Bosch 204 fault code mean?

Your boiler is temporarily turning off because the water inside it has become hotter than the thermostat is currently requesting.

How much does it cost to fix Worcester Bosch error code 204?

Typical repair cost for the Worcester Bosch 204 fault is £120-250 including labour.

Manufacturer manual

System waiting, primary flow temperature above set temperature point

Shared across the Greenstar 8000 range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Boiler cover options

A cover plan would handle faults like 204: no call-out fees, no surprise bills.

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

Each noise points to a different fault.

Break-even maths on monthly cover.

7 signs repair isn't worth it anymore.