Carrier HH18HA141 Limit Switch 321042-401 this specific part is factory-configured

this specific part is factory-configured for Liquid Propane (LP)

ensuring a gastight seal within the burner assembly

It is critical to confirm your gas type (Natural Gas or Propane) to ensure the orifice size is correctly rated for your specific Modine unit

While primarily a head pressure control

Within commercial HVACR systems

Carrier HH18HA141 Limit Switch 321042-401 this specific part is factory-configuredThe Carrier HH18HA141 Limit Switch is a critical OEM safety component engineered for precision thermal monitoring in Carrier, Bryant, and Payne gas furnaces. As a normally closed SPST disc style switch, it serves as the primary high limit defense against heat exchanger overheating. This L140 40F limit switch is designed to automatically open the electrical circuit when internal plenum temperatures reach 140F, effectively shutting down the gas valve to