BoilerFaultCodesIntergas f028 Fault Code
Also written as F028 — same fault.
The Intergas f028 fault code means: your boiler's internal computer has become confused after several reset attempts and has locked itself out for safety.. It appears on 5 Intergas models in our database.
Technical description: Reset error.
What causes the Intergas f028 fault?
This fault occurs when the boiler's reset button has been pressed too many times in a short configuration or if the internal computer has encountered a glitch during the startup process. It is essentially a software safety lock designed to prevent the boiler from being repeatedly forced to start when a different underlying issue might be present. Usually, a full power cycle is needed to clear the memory and allow the system to try again.
DIY fix possible
Turn off the power supply to the boiler at the fused spur switchWait for 30 secondsTurn the power back on and wait for the boiler to complete its startup sequence
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Gas Safe Register →Intergas models that show the f028 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Intergas f028 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