BoilerFaultCodesAriston L.E.D. G Fault Code
Also written as LEDG — same fault.
The Ariston L.E.D. G fault code means: your boiler has got too hot and has shut itself down as a safety precaution to prevent damage.. It appears on 3 Ariston models in our database.
Technical description: Overheating: This control shuts off the boiler in the case where the primary circuit reaches a temperature in excess of 110°C.
DIY fix possible
Wait 30 minutes for the system to cool down completelyCheck that all radiator valves are fully open to allow water flowTurn the selector switch to the 'Reset' position and then back to 'On'
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Ariston models that show the L.E.D. G fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ariston L.E.D. G fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026