Locating the Secondary Sensor on a Frigidaire Window A/C [VIDEO] krista@thegrowth.co 9 years ago A secondary sensor is often on Frigidaire window A/C units 12KBTU and above. This short video shows you how to locate the sensor. Secondary Sensor Removal [Video]DateMarch 9, 2016In relation toCoolBot How-TosHow to Build a Walk-In Cooler for Your Small Farm [Free Guide]DateFebruary 28, 2017In relation toAgricultureHow to Build a Walk-in Cooler for BreweriesDateAugust 17, 2017In relation toBars and Brewing