How much does it cost to fix Biasi error code Er 11 + RESET?

Typical repair cost for the Biasi Er 11 + RESET fault is £90-250 including labour.

Er 11 + RESET High

Biasi Er 11 + RESET Fault Code

Q: What does the Biasi Er 11 + RESET fault code mean?

Your boiler has failed to light the gas or cannot tell that the flame is burning, causing it to shut down for safety.

Also written as ER11RESET — same fault.

The Biasi Er 11 + RESET fault code means: your boiler has failed to light the gas or cannot tell that the flame is burning, causing it to shut down for safety.. It appears on 1 Biasi model in our database.

Technical description: Flame detection error

Typical repair cost £90-250 (including labour)

DIY fix possible

Check that your gas supply is turned on and other gas appliances are workingEnsure your condensate pipe has not frozen if it is cold outsidePress and hold the RESET button for 2 seconds to attempt a restart

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Biasi models that show the Er 11 + RESET fault code

Click a model for the full fault code list and model-specific repair notes.

Advance 25C Repair: £90-250

Source

Biasi Er 11 + RESET fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026