How much does it cost to fix Sime error code AL 82?

Typical repair cost for the Sime AL 82 fault is £120-350 including labour.

AL 82 High

Sime AL 82 Fault Code

Q: What does the Sime AL 82 fault code mean?

Your boiler has shut down because it has failed to ignite or maintain a flame several times in a row, often after a power cut or a gas supply disruption.

Also written as AL82 — same fault.

The Sime AL 82 fault code means: your boiler has shut down because it has failed to ignite or maintain a flame several times in a row, often after a power cut or a gas supply disruption.. It appears on 6 Sime models in our database.

Technical description: Block due to numerous combustion control failures

Typical repair cost £120-350 (including labour)

DIY fix possible

Check that your gas supply is turned on (check other gas appliances or top-up credit)Hold the R (Reset) button for 2-5 seconds until the display clearsMonitor the boiler to see if it fires up; if it locks out again, call a Gas Safe engineer

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Sime models that show the AL 82 fault code

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

Source

Sime AL 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