How much does it cost to fix Ferroli error code Low system pressure?

Cost varies. Contact a Gas Safe registered engineer for a quote.

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Ferroli Low system pressure Fault Code

Q: What does the Ferroli Low system pressure fault code mean?

Your boiler has lost the water pressure it needs to circulate heat around your home, so it has safely shut itself down to prevent damage.

Also written as LOWSYSTEMPRESSURE — same fault.

The Ferroli Low system pressure fault code means: your boiler has lost the water pressure it needs to circulate heat around your home, so it has safely shut itself down to prevent damage.. It appears on 3 Ferroli models in our database.

Technical description: Fill the ‘system to 1-1.5 bar.

DIY fix possible

Locate the external filling loop, which is a small silver flexible hose connected to two valves under the boiler.Open the valves slowly to allow cold mains water to enter the system until the pressure gauge on the front of the boiler reaches between 1 and 1.5 bar.Close both valves tightly and ensure the flexible hose is disconnected if required by your specific installation.

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Ferroli models that show the Low system pressure fault code

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

Source

Ferroli Low system pressure fault code information on this page is sourced and cross-checked against the official Ferroli service / installation manuals for each affected model.

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