Alpha Pump runs Fault Code
Also written as PUMPRUNS — same fault.
The Alpha Pump runs fault code means: your boiler's water pump is running constantly, which often indicates the system is failing to detect that it has successfully reached the required temperature or is struggling to circulate water properly.. It appears on 2 Alpha models in our database.
Technical description: Follow section 'B' fault finding
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Alpha models that show the Pump runs fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Alpha Pump runs fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026