Good Low

Atag Good Fault Code

Also written as GOOD — same fault.

The Atag Good fault code means: your boiler is operating exactly as it should and there are no faults to worry about.. It appears on 3 Atag models 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: The boiler in operation will always show 'Good'. In normal situations.

DIY fix possible

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

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Atag models that show the Good fault code

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

Source

Atag Good fault code information on this page is sourced and cross-checked against the official Atag service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026