BoilerFaultCodesWorcester Bosch Fault 56 154 Fault Code
Also written as FAULT56154 — same fault.
The Worcester Bosch Fault 56 154 fault code means: your boiler's internal pump has been manually overridden or is stuck in a manual operation mode, which is preventing it from working automatically to heat your home.. It appears on 1 Worcester Bosch model in our database.
Technical description: Pump (PE) operated manually.
What causes the Worcester Bosch Fault 56 154 fault?
This fault usually occurs when the boiler's internal pump has been set to run at a fixed speed or manual mode during a service or repair, and it hasn't been switched back to automatic control. It can also be caused by a communication failure between the boiler's main brain and the pump, or a physical blockage that forces the pump to behave abnormally. Without the ability to adjust its speed automatically, the boiler shuts down for safety to prevent overheating.
DIY fix possible
Press the 'Reset' button on the boiler control panel and hold for five seconds.Wait for the boiler to complete its restart sequence.Ensure any 'Manual' buttons on the pump itself (if visible) are set to 'Auto'.
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Gas Safe Register →Worcester Bosch models that show the Fault 56 154 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Worcester Bosch Fault 56 154 fault code information on this page is sourced and cross-checked against the official Worcester Bosch service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026