High
FA on Ideal Vogue

Your boiler has detected that hot water is flowing in the wrong direction through the pipes, usually because they were connected backwards or a sensor is poorly placed.

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

Flow return reversed

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

F1View →L2View →F2View →

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