Reznor 123974 Fan Switch Els PW 17895 while exceeding the rating can

while exceeding the rating can cause excessive winding current and premature motor failure

ensuring the system returns to optimal performance without risking compressor longevity

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including specific Reznor unit heaters

Reznor 123974 Fan Switch Els PW 17895 while exceeding the rating canThe Reznor 123974 Fan Switch is a precise thermal control engineered for gas fired unit heaters and duct furnaces. Designed to manage blower cycles based on internal heat exchanger temperatures, this F135 30F fan control ensures the fan engages when the plenum reaches 135F and terminates operation once it cools to 105F (30F differential). As a direct replacement for part 48706, it maintains the critical timing required to prevent heat exchanger stress