High
LED1 on Ferroli Combi 77 FF Popular

Your boiler has detected that the internal air fan or pressure system is stuck in the 'on' position, preventing the boiler from starting its ignition sequence for safety.

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

Air flow present (Air pressure switch in safe position)

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

LED2View →LED3View →

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