Insufficient system pressure High

Ferroli Insufficient system pressure Fault Code

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

Your boiler has stopped working because the water pressure inside the pipes is too low to operate safely.

Q: How much does it cost to fix Ferroli error code Insufficient system pressure?

Typical repair cost for the Ferroli Insufficient system pressure fault is £0-120 including labour.

Also written as INSUFFICIENTSYSTEMPRESSURE — same fault.

The Ferroli Insufficient system pressure fault code means: your boiler has stopped working because the water pressure inside the pipes is too low to operate safely.. It appears on 3 Ferroli models in our database.

Technical description: Fill the system to 1-1.5 bar by use of the filling loop

Typical repair cost £0-120 (including labour)

DIY fix possible

Locate the filling loop, which is usually a flexible silver hose under the boiler.Slowly open the tap or taps on the hose until you hear water flowing.Watch the pressure gauge until it reaches between 1.0 and 1.5 bar, then turn the taps back off securely.

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Ferroli models that show the Insufficient system pressure fault code

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

Source

Ferroli Insufficient 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