BoilerFaultCodesIdeal GAS VALVE FAULT Fault Code
Also written as GASVALVEFAULT — same fault.
The Ideal GAS VALVE FAULT fault code means: your boiler is unable to safely control the flow of gas needed to stay alight, so it has shut down to prevent any risks.. It appears on 7 Ideal models in our database.
Technical description: Check wiring. Check gas pressure. Change gas valve solenoid. Replace faulty gas valve.
What causes the Ideal GAS VALVE FAULT fault?
This fault occurs when the boiler's internal computer detects an electrical or physical failure in the component that manages gas delivery. The most common reason is that the magnetic coils within the valve have burnt out or the internal mechanism has become stuck, preventing the boiler from maintaining a safe flame. In some cases, loose or damaged wiring between the control board and the valve can also trigger this safety shutdown.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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Gas Safe Register →Ideal models that show the GAS VALVE FAULT fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal GAS VALVE FAULT 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