Rheem-Ruud 47-21663-01 Limit Switch or a system that stays

or a system that stays in defrost mode too long

Manufactured in the USA

this HI-limit lead wire ensures a reliable electrical path to interrupt gas flow should the system exceed its thermal safety setpoint

technicians should inspect the venting and heat exchanger integrity immediately

Rheem-Ruud 47-21663-01 Limit Switch or a system that staysThe 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