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this igniter ensures consistent furnace ignition for both natural gas and liquid propane (LP) systems
Key Benefits Precision Thermal Protection: Fixed 250°F trip point provides a definitive safety cutoff to prevent furnace overheating
providing consistent switching logic and preventing system downtime caused by carbon buildup or pitted contacts
extending the service life of the HVAC capacitor
Common Questions: Can I use a 2-pole contactor to replace a 1-pole model
Carrier HH12ZB190 Limit Switch this igniter ensures consistent furnaceThe 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