Carrier HH12ZZ190 Limit Switch R-22 Automatic Reset Logic: Eliminates manual

Automatic Reset Logic: Eliminates manual resets by closing the circuit once temperatures drop back to safe operating levels

though upright is preferred to prevent sediment buildup

preventing the system hunting and airflow imbalances common with universal alternatives

VG7842GT typically refers to the valve body only

Easy Calibration: Features a large

Carrier HH12ZZ190 Limit Switch R-22 Automatic Reset Logic: Eliminates manualThe Carrier HH12ZZ190 Limit Switch is a critical safety component designed for precise thermal monitoring in residential gas furnaces. Engineered as a normally closed (NC) high limit control, this genuine OEM replacement part features a 190F fixed set point and a 40F differential. This means the circuit opens on a temperature rise at 190F to prevent heat exchanger damage and automatically resets when the temperature drops to 150F. Reliable thermal