Lennox 73K19 Limit Switch 340155-7024 excessive vibration in the air

excessive vibration in the air handler

with a suction connection size of 1-3/4 inches and a discharge connection of 1-1/4 inches

check the sensor's resistance (Ohms) against the manufacturer's temperature/resistance chart

airflow can often be adjusted via dip switches on the integrated control board as per the manufacturer's technical manual

this TXV replacement kit includes the valve body and the necessary components for a standard field installation in compatible Carrier-family cabinets

Lennox 73K19 Limit Switch 340155-7024 excessive vibration in the airThe Lennox 73K19 is a technical grade L160 30F Limit Switch engineered for critical temperature oversight in residential and commercial HVAC furnace units. This OEM disc style limit control features a normally closed (NC) circuit configuration and utilizes an automatic reset mechanism for system continuity. As a primary safety component, the switch is calibrated to open the electrical circuit when the sensed temperature reaches its high limit cutout