Medium
L5 on Ideal Concorde

Your boiler has been manually reset too many times in a short window and has temporarily locked itself out as a safety precaution.

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 boiler resets in 15 minutes

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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

Turn the boiler power off at the fused spur switchWait at least 15 minutes without touching any buttonsTurn the power back on and allow the boiler to complete its startup sequence

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Related fault codes

L2View →L1View →F2View →

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