How much does it cost to fix Ferroli error code 46?

Typical repair cost for the Ferroli 46 fault is £0-120 including labour.

46 Low

Ferroli 46 Fault Code

Q: What does the Ferroli 46 fault code mean?

Your boiler has paused briefly because a sensor detected an unusual reading, but it should restart itself automatically once the temperature or pressure stabilizes.

The Ferroli 46 fault code means: your boiler has paused briefly because a sensor detected an unusual reading, but it should restart itself automatically once the temperature or pressure stabilizes.. It appears on 3 Ferroli models in our database.

Technical description: Temporary shutdown fault - resets automatically as soon as the value comes back within the boiler’s normal working range

Typical repair cost £0-120 (including labour)

DIY fix possible

Check if the system pressure is between 1 and 1.5 bar on the pressure gaugeEnsure all radiator valves are open to allow proper water flowWait up to 15 minutes to see if the boiler clears the code and restarts on its own

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Ferroli models that show the 46 fault code

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

Source

Ferroli 46 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