Carrier HH12ZB190 Limit Switch This one-piece aluminum propeller is

This one-piece aluminum propeller is a standard OEM equivalent fan blade designed for longevity in demanding HVACR environments

this part ensures stoichiometric combustion to prevent soot buildup and inefficient fuel consumption

always verify the orifice size and inlet pressure ratings to maintain optimal lock-up performance and avoid seat wear

Repeated tripping is usually indicative of restricted airflow

Carrier HH12ZB190 Limit Switch This one-piece aluminum propeller isThe Carrier HH12ZB190 Limit Switch is a critical OEM safety component engineered for HVAC high limit protection in gas furnaces and packaged units. As an automatic reset limit switch, this part is designed to open the electrical circuit when internal plenum temperatures reach 190F (cut out) and automatically close once the temperature drops to 150F (cut in). This Normally Closed (NC) switch features a 3 inch insertion length, ensuring accurate sensing