Medium
LC on Ideal Atlantic Combi 24

Your boiler has temporarily locked itself out for safety because it had to restart five times in a short space of time.

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

5 Resets Within 15 Mins

From this model's manual
Verified against the Ideal/Ideal Atlantic Combi 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

Wait 15 minutes to see if the lockout clears automatically.Turn the boiler off and on again using the main power switch or reset button to clear the lock.Check that your home's gas supply is working properly by testing another gas appliance like a hob.

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Related fault codes

F1View →F2View →L2View →

All 28 fault codes on the Atlantic Combi 24

Seeing a different code? Every code this model can display, in one place.

F1F2F2 Or Fn Or LnF3F4F5F6F7F8F8 or L8F8/L8F9F9 or L9F9/L9FAFNFUL1L2L4L4 Or F4L5L5 Or F5L6L8L9LN

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