BoilerFaultCodesIdeal HE Fault Code
The Ideal HE fault code means: your boiler's main control computer has developed an internal electrical fault and can no longer manage the heating process safely.. It appears on 4 Ideal models in our database.
Technical description: BOARD ERROR
What causes the Ideal HE fault?
This fault occurs when the boiler's internal computer chips or electrical circuits suffer a hardware failure, meaning the brain of the appliance can no longer process data or send signals. The most common reason is general age-related wear on the circuit board's components, or occasionally an electrical surge that has damaged the delicate tracks. Because the board can no longer guarantee the boiler is operating safely, it automatically shuts the system down.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Ideal models that show the HE fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal HE 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