Ideal 4.13 Fault Code
Also written as 413 — same fault.
The Ideal 4.13 fault code means: your boiler's internal computer parts are failing to talk to each other, meaning the system cannot operate or provide heat and hot water.. It appears on 8 Ideal models in our database.
Technical description: No Connection To Primary PCB
What causes the Ideal 4.13 fault?
This fault occurs when the boiler's main control board loses its communication link with the other internal electronic components. The most common reason is a failure of the printed circuit board itself, though it can also be triggered by a loose wiring connection or a faulty user interface display. Because these parts cannot 'talk' to each other, the boiler shuts down as a safety precaution.
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 4.13 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal 4.13 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