Emergency
E11 on Biasi Antares System

Your boiler thinks a flame is present even though the burner should be switched off, which is a safety conflict causing the system to lock out.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Parasite flame (flame detection with burner off)

From this model's manual
Verified against the Biasi/Biasi Antares System 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 emergency 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

E01View →E02View →

All 96 fault codes on the Antares System

Seeing a different code? Every code this model can display, in one place.

1 +2 +3 +4 +5 +6 +7 +8 +1010 +11 +1212 +1313 +1414 +1515 +1616 +1818 +1919 +2020 +2121 +22 +2323 +2424 +2525 +2626 +4040 +4242 +44 +5050 +6262 +6565 +6868 +77 +7878 +7979 +8989 +9191 +9696 +9799E01E02E03E04E05E06E07E08E10E14E15E16E20E21E22E24E65E68E77E78E79E89E91E96E96+E97E99Keys faultL1Lock statemax err .

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