ALL 82 Emergency

Sime ALL 82 Fault Code

Also written as ALL82 — same fault.

The Sime ALL 82 fault code means: your boiler has detected multiple failed attempts to light the flame or maintain stable burning, so it has locked itself for safety to prevent gas buildup.. It appears on 3 Sime 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: Block due to numerous combustion control failures
Typical repair cost £150-350 (including labour)

Engineer required

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

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Sime models that show the ALL 82 fault code

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

Source

Sime ALL 82 fault code information on this page is sourced and cross-checked against the official Sime service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026