BoilerFaultCodesIntergas F029 Fault Code
The Intergas F029 fault code means: your boiler is unable to safely control the flow of gas required for ignition and operation, causing the system to shut down.. It appears on 5 Intergas models in our database.
Technical description: Gas valve error
What causes the Intergas F029 fault?
This fault occurs when the boiler's internal computer is unable to communicate with or control the movements of the gas valve. The most common reason is an electrical failure within the valve’s motor or a faulty ignition lead that prevents the unit from sustaining a flame safely. In some cases, the main circuit board may be sending incorrect signals, leading the boiler to shut 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 →Intergas models that show the F029 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Intergas F029 fault code information on this page is sourced and cross-checked against the official Intergas service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026