High
Er 10 on Biasi Advance 25C

Your boiler has detected a blockage in the condensation drainage pipe or a fault with its internal sensing system, causing it to shut down for safety.

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

Cond. drain pipe and trap / Main electronic p.c.b. / Detection electrode

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

Er 01View →Er 02View →Er 05View →

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