High
281 on Worcester Bosch Greenstar 28CDi

Your boiler is struggling to push water around your heating system because the internal water pressure is too low or the pump is failing to detect movement.

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

Pump pressure increase too low

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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