BoilerFaultCodesIntergas f029 Fault Code
Also written as F029 — same fault.
The Intergas f029 fault code means: your boiler is unable to control the gas supply correctly, which has caused it to shut down for safety.. It appears on 4 Intergas models in our database.
Technical description: Gas valve fault.
What causes the Intergas f029 fault?
This fault occurs when the boiler's internal computer detects a communication error or mechanical failure within the gas valve. The most common reason is that the valve is unable to open or close properly to regulate the fuel flow, leading the system to shut down for safety. In some cases, a faulty ignition lead or a failing control board can also send incorrect signals, mimicking a valve failure.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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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 7 July 2026