High
12 on Alpha Intec2 30SE

Your boiler's computer is confused because its internal settings, such as whether it should be heating water or radiators, do not align with the physical parts installed.

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.

What the manual says

Manufacturer manual

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

From this model's manual
Verified against the Alpha Intec2 25 28xe installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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