0 ohms or an open line (OL) in the wrong state indicates a failure

Key Benefits: Reduces Short Cycling: Implements a hard 3-minute delay to prevent frequent

For contractors looking to improve fresh air ventilation without complex programming

this component maintains strict adherence to OEM pressure and magnetic circuit specifications

Ensure you select the correct voltage for your specific control circuit

Carrier HH18HA201 Limit Switch 320788-702 0 ohms or an openThe Carrier HH18HA201 Limit Switch is a critical safety component designed for precise thermal monitoring within furnace heat exchangers and air handlers. Engineered as a 160 degree furnace limit switch, this L160 40 thermally actuated control prevents equipment overheating by breaking the electrical circuit when the internal temperature exceeds the 160F fixed setpoint. It features a 40F differential, ensuring the system resets once temperatures