Carrier HH12ZB190 Limit Switch Key Benefits Precision Thermal Protection:

Key Benefits Precision Thermal Protection: Fixed 250°F trip point provides a definitive safety cutoff to prevent furnace overheating

and mixed gas piping systems

this igniter ensures consistent furnace ignition for both natural gas and liquid propane (LP) systems

ensuring the root cause of the overheat is addressed

If the tank does not fill

Carrier HH12ZB190 Limit Switch Key Benefits Precision Thermal Protection:The 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