Low
AL 00 on Sime Mia 30

Your boiler is displaying the most recent fault code it recorded to help you diagnose a past issue, rather than indicating a new active problem.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Last activated alarm/fault

From this model's manual
Verified against the Sime Mia 30 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.

DIY fix possible

Press and release the 'OK' or 'Reset' button to clear the history viewCheck if any other 'AL' codes appear immediately after clearingMonitor the boiler to see if a specific error code repeats during operation

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Related fault codes

AL 01View →AL 02View →AL 06View →

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