High
L 01 on Ideal i-mini2 C24

Your boiler has got too hot and has shut itself down for safety, meaning you have no heating or hot water until the system cools and is reset.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Overheat Lockout

From this model's manual
Verified against the Ideal I Mini2 C24 installation & service manual, page 52.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

L 02View →F 01View →

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