High
E76 on Alpha E-Tec Plus 24

Your boiler is having trouble controlling the internal gas flow, which means it has safely shut down to prevent damage or inefficient operation.

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

Modulating valve failure

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

E77View →

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