BoilerFaultCodesIdeal LC Fault Code
The Ideal LC fault code means: your boiler has shut itself down as a safety precaution because it has been manually restarted too many times within a short period.. It appears on 21 Ideal models in our database.
Technical description: 5 Boiler Resets in 15 minutes
What causes the Ideal LC fault?
This code appears when the boiler's internal computer is performing a software reboot, often triggered after the main power has been switched off and on or following a physical reset. It indicates that the control board is synchronizing its components and checking safety parameters before allowing the burner to ignite. In some cases, it can also appear if there is a momentary fluctuation in the electrical supply to your home.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Ideal models that show the LC fault code
Click a model for the full fault code list and model-specific repair notes.
- CLASSIC2
- Concorde
- ESPRIT ECO2
- EXCLUSIVE2
- GB24 / GB30 Repair: £120-250
- i Combi 2 Repair: £120-350
- INDEPENDENT + COMBI
- Independent C24
- INDEPENDENT COMBI
- INDEPENDENT SYSTEM
- INSTINCT2
- Instinct2 24 Repair: £0-120
- Logic Code Combi ESP1 Repair: £100-350
- Logic Combi C24 C30 C35 Repair: £120-350
- Logic Combi ESP1 Repair: £100-£350
- LOGIC HEAT
- Logic Max Heat
- Logic Max System Repair: £100-350
- LOGIC SYSTEM
- Logic+ Heat H Repair: £0-120
- Logic+ System Repair: £90-180
Source
Ideal LC fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026