BoilerFaultCodesIdeal LE Fault Code
The Ideal LE fault code means: your boiler’s internal computer has encountered a critical error and cannot communicate properly with the system.. It appears on 4 Ideal models in our database.
Technical description: BOARD ERROR
What causes the Ideal LE fault?
This fault occurs when the boiler's main control board suffers a hardware failure or a corruption in its software, meaning it can no longer process commands. The most common reason is age-related wear to the electrical components on the board, though it can also be triggered by a sudden power surge or moisture getting into the control box.
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 →Ideal models that show the LE fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal LE 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 27 April 2026