How much does it cost to fix Potterton error code Safety shut-down?

Typical repair cost for the Potterton Safety shut-down fault is £80-150 including labour.

Safety shut-down High

Potterton Safety shut-down Fault Code

Q: What does the Potterton Safety shut-down fault code mean?

Your boiler has automatically turned itself off because the water pressure inside the heating system has fallen too low to operate safely.

Also written as SAFETYSHUTDOWN — same fault.

The Potterton Safety shut-down fault code means: your boiler has automatically turned itself off because the water pressure inside the heating system has fallen too low to operate safely.. It appears on 1 Potterton model in our database.

Technical description: Burner control goes to safety shut-down if the system pressure drops below 0.5 bar.

Typical repair cost £80-150 (including labour)

DIY fix possible

Locate the external filling loop, which is a silver braided hose connecting your central heating pipes.Open the valves at both ends of the filling loop to allow cold mains water to enter the system.Watch the pressure gauge on the front of the boiler and close the valves once it reaches 1.0 to 1.5 bar.

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Potterton models that show the Safety shut-down fault code

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

Powermax HE Repair: £80-150

Source

Potterton Safety shut-down fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.

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