Medium
F6 on Ideal Concorde

Your boiler is struggling to work out how hard it needs to fire because it has lost communication with the sensor that monitors the temperature outside.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Outside sensor fault

Engineer required

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

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Related fault codes

F1View →F2View →F5View →

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