High
E25 on Biasi Rinnova Adaptive Combi

Your boiler has detected a conflict where it is getting too hot internally, likely because water is stuck or the sensors are sending conflicting information to the brains of the unit.

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

Main electronic p.c.b. / D.H.W. flow switch / Diverter valve

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

E02View →E03View →E26View →

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