Medium
CE on Alpha E-Tec Plus 28

Your boiler is receiving an unusual temperature reading from an external sensor, preventing it from heating your home correctly.

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

External control connection only used with system supervisor connection (occurs when external sensor reading offset is over +9)

Engineer required

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

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Related fault codes

E01View →E02View →

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