SET Low

Grant SET Fault Code

The Grant SET fault code means: your boiler is operating normally and is currently displaying the temperature you have requested it to reach.. It appears on 1 Grant model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Normal control panel display showing set temperature

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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Grant models that show the SET fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Grant SET 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 27 April 2026