High
15 on Alpha E-Tec 28

Your boiler's computer has detected a conflict between its internal programming and how the plumbing system is actually set up.

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

Incorrect configuration - Incorrect hydraulic configuration. There is an inconsistency between the settings and signals received from the PCB

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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