If you are diagnosing a pressure switch lockout or observing moisture tracks around the condensate collector box

Auto-Reset Functionality: Features a 25°F differential

Key Benefits Universal Compatibility: Includes multiple dial adaptors and a square break-off shaft to match original equipment knobs and panel depths

Its snap-disc construction provides reliable continuity in the closed position

White-Rodgers FR1600M-111 Filter Els PW 17895 If you are diagnosing aThe White Rodgers FR1600M 111 is a high performance 20x20x4 furnace filter engineered for media air cleaners requiring a nominal flow of 1600 CFM. This 3 pack of MERV 11 replacement filters provides an exact fit for the Emerson ACM1600M whole house air cleaner series, as well as several TopTech models. With a deep pleat design, these filters offer a significantly higher surface area compared to standard 1 inch filters, resulting in a low pressure drop