Medium
AL 42 on Sime Mia 30

One of the buttons on your boiler's control panel has become stuck or is malfunctioning, which is preventing you from changing settings.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Button fault

From this model's manual
Verified against the Sime Mia 30 installation & service manual, page 45.
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

Check all buttons on the front panel to see if any are stuck in the 'pushed' position.Gently press and release each button several times to ensure they move freely.Turn the boiler power off and back on at the fused spur switch to reset the electronics.

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Related fault codes

AL 40View →AL 41View →

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