Cooling FANS gives you a choice of two settings: • The default setting REGULATED should suit use in all normal situations and ensure excellent service lifetimes for all components. • FULL maximizes cooling and reduces the operating temperature of the components in the head. It is recommended when the MAC Aura XB is used intensively in a warm environment or in fixed installations. Note that it will give increased fan noise compared to the other cooling modes. Whatever cooling mode is selected, a thermal cutout shuts down power to the LEDs if the fixture temperature exceeds safe limits. If this occurs, you must reset the fixture via the control menus or via DMX, or cycle power to the fixture off and on again. If a thermal shutdown occurs, you are pushing the fixture to its limits. Clean the fixture, particularly the air vents, and check that there is sufficient airflow around the fixture. Consider increasing ventilation, reducing the ambient temperature, or switching to FULL mode. Contact Martin for service if a thermal shutdown persists.