BoilerFaultCodesIdeal 417 Fault Code
The Ideal 417 fault code means: your boiler's computer control board has experienced an internal electrical fault and is unable to communicate with its components.. It appears on 2 Ideal models in our database.
Technical description: internal failure - electronic
What causes the Ideal 417 fault?
This fault occurs when the boiler's main control board suffers a critical electronic failure that prevents it from processing instructions or monitoring safety sensors. The most common reason is the natural degradation of electrical components over time, though it can also be triggered by a sudden power surge or moisture getting onto the circuitry.
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 417 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal 417 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