F30 High

Ferroli F30 Fault Code

The Ferroli F30 fault code means: your boiler's internal thermometer that measures the temperature of the water being sent to your taps and radiators has developed a fault, preventing the system from heating up correctly.. It appears on 5 Ferroli models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Delivery sensor fault
Typical repair cost £90-160 (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 F30 fault code

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

Source

Ferroli F30 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 7 July 2026