How much does it cost to fix Ferroli error code Return sensor faulty?

Typical repair cost for the Ferroli Return sensor faulty fault is £120-220 including labour.

Return sensor faulty High

Ferroli Return sensor faulty Fault Code

Q: What does the Ferroli Return sensor faulty fault code mean?

Your boiler has lost the ability to measure the temperature of the water returning to it, so it has safely shut down to prevent overheating.

Also written as RETURNSENSORFAULTY — same fault.

The Ferroli Return sensor faulty fault code means: your boiler has lost the ability to measure the temperature of the water returning to it, so it has safely shut down to prevent overheating.. It appears on 1 Ferroli model in our database.

Technical description: Sensor damaged or wiring cut

Typical repair cost £120-220 (including labour)

Engineer required

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

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Ferroli models that show the Return sensor faulty fault code

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

Econcept 100 Repair: £120-220

Source

Ferroli Return sensor faulty 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