BoilerFaultCodesGrant AIR PRESSURE ERROR Fault Code
Also written as AIRPRESSUREERROR — same fault.
The Grant AIR PRESSURE ERROR fault code means: your boiler is struggling to clear exhaust gases or draw in fresh air, so it has safely shut down to prevent unsafe operation.. It appears on 1 Grant model in our database.
Technical description: Air pressure error is scrolling across the bottom of the burner control panel display.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Grant models that show the AIR PRESSURE ERROR fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Grant AIR PRESSURE ERROR fault code information on this page is sourced and cross-checked against the official Grant service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026