High
2970 B on Worcester Bosch Hideaway

Your boiler has detected that the water pressure in your pipes is dropping much faster than it should, often because of a leak or an issue with the expansion tank.

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

Pressure drop in heating system too rapid

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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