Pump does not run High

Saunier Duval Pump does not run Fault Code

Also written as PUMPDOESNOTRUN — same fault.

The Saunier Duval Pump does not run fault code means: your boiler is not circulating water because the part responsible for pushing it around is failing to start even when the boiler is asking for heat.. It appears on 1 Saunier Duval model in our database.

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: Check SL (Switched Live) application. If pump fails to run with SL applied, faulty PCB.
Typical repair cost £250-450 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Saunier Duval models that show the Pump does not run fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Saunier Duval Pump does not run fault code information on this page is sourced and cross-checked against the official Saunier Duval service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026