Your boiler is taking a short rest to prevent it from switching on and off too frequently, which helps save energy and protect its internal components.

Anti cycling mode (after heating operation)

What causes this fault?

This status occurs when the boiler has reached its target temperature and shuts down briefly to prevent 'short-cycling,' which is when the unit turns on and off too quickly. It physically happens because the heat produced by the burner cannot be moved away into your radiators fast enough, often because the house is already warm or the radiator valves have closed. This pause protects the internal components from unnecessary wear and tear while ensuring the system runs efficiently.