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 detected that it is running much too hot and has automatically shut itself down to prevent any damage or safety issues.. It appears on 11 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.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →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.
- Challenger 80E Repair: £150-300
- E-Combi One Repair: £150-300
- E-Combi One 30 Repair: £150-300
- Euro Combi 30 MFFI Repair: £120-350
- Euro Prisma 24 Repair: £90-280
- Genus 27 Repair: £150-300
- Genus 30 Plus Repair: £150-300
- Genus One 24 Repair: £150-300
- Genus One 30 Repair: £150-300
- Genus Premium Repair: £150-300
- Microsystem 15 Repair: £150-300
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 27 April 2026