High
204 on Worcester Bosch 1000

Your boiler has detected that the water inside the unit is getting hotter than the temperature setting, so it has purposefully turned itself off to prevent overheating.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Current primary water temperature higher than set val.

What causes this fault?

Temperature control issue

Engineer required

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

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Related fault codes

224View →227View →

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