What condition does the amber duct temperature indicator illuminate at?

The amber duct temperature indicator is a critical component in monitoring the temperature of the duct system. It specifically illuminates when the temperature exceeds 300°F. This threshold is set to alert operators to potential overheating issues that might jeopardize system integrity or safety, allowing for timely intervention to prevent damage or failure. Keeping an eye on such indicators is essential for the proper functioning of HVAC systems or similar applications, where temperature control is crucial for operational efficiency and safety standards.