High
F10 on Ferroli iBoiler 24

Your boiler's internal temperature sensor has stopped communicating with the main control board, preventing the system from heating up your water safely.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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 error, sensor damaged wiring shorted or disconnected

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F11View →F14View →A03View →

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