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replacing damaged or warped units with this OEM-spec part ensures the combustion system operates within manufacturer parameters
This specific L165-30 furnace limit switch is calibrated to open at 165°F (shuting down the burner) and close at 135°F (resuming operation once temperatures stabilize)
Enhanced Reliability: Provides consistent hot surface ignition to minimize delayed ignition and burner resonance
making it an ideal upgrade for 370V systems
Carrier HH12ZB200 Limit Switch replacing damaged or warped unitsThe Carrier HH12ZB200 Limit Switch is a critical OEM replacement part engineered for precise thermal protection in residential and light commercial furnaces. This auto reset limit switch features a 3 inch insertion depth and is factory calibrated for an L200 40 configuration, meaning it opens on a temperature rise at 200F and automatically closes once the system cools to 160F. As a furnace high limit thermostat, it prevents internal heat exchanger
