E83---181 Emergency

Biasi E83---181 Fault Code

Also written as E83181 — same fault.

The Biasi E83---181 fault code means: your boiler has detected an issue with the insulating material inside the sealed metal box where the fire burns, which is preventing it from operating safely.. It appears on 3 Biasi models in our database.

Act immediately

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

Technical description: Combustion chamber rear panel (mod.M96.28SM/...M96.28SR/...)
Typical repair cost £150-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Biasi models that show the E83---181 fault code

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

Source

Biasi E83---181 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 7 July 2026