Rheem-Ruud 47-21663-01 Limit Switch 5-inch face allows for quick

5-inch face allows for quick

Replace the blade if you notice cracks

which indicates a block or incorrect orifice sizing

technicians should inspect the venting and heat exchanger integrity immediately

Rheem-Ruud 47-21663-01 Limit Switch 5-inch face allows for quickThe Rheem Ruud 47 21663 01 Limit Switch is a high precision, OEM replacement furnace limit switch designed for critical thermal protection in HVAC systems. This SPST normally closed switch is engineered to monitor heat exchanger temperatures effectively, featuring a fixed open temperature of 140 degrees F and a fixed close temperature of 130 degrees F. As a general purpose limit switch, it utilizes an auto reset mechanism, ensuring the system resumes