Carrier HH18HA202 Rollout Switch 321142-301 ensuring compatibility with aggressive refrigerants

ensuring compatibility with aggressive refrigerants and secondary coolants

Technicians typically identify failure through an open circuit reading on a multimeter

you know that keeping a service truck stocked with reliable switching components is non-negotiable

please note these model numbers are identical and provide the same general-purpose liquid level monitoring functionality

Provides reliable condenser airflow for efficient heat rejection

Carrier HH18HA202 Rollout Switch 321142-301 ensuring compatibility with aggressive refrigerantsThe Carrier HH18HA202 Rollout Switch is a critical safety component designed for gas fired furnaces and heating systems. Engineered as a manual reset limit switch, this SPST (Single Pole Single Throw) device is calibrated to open the circuit at a fixed 350 degrees F. When excessive heat is detectedtypically indicating a flame rollout condition or heat exchanger breachthe switch interrupts the 24V control circuit to shut down the gas valve immediately.