Carrier HR54ZA003 Door Switch Technicians should inspect for weeping

Technicians should inspect for weeping at the valve bonnet

including many infrared tube heaters and unit heaters

ensuring a seamless drop-in fit for legacy Wayne combustion systems

For microchannels

Carrier HR54ZA003 Door Switch Technicians should inspect for weepingThe Carrier HR54ZA003 Door Switch is a critical OEM safety interlock designed to ensure secure blower compartment closure before system engagement. As the direct cross version of B4310407, this switch is engineered for high duty cycles in residential and commercial furnace repair and air handler applications. Rated at 20A 125VAC and 10A 250VAC with 3 4 HP capacity, it provides the robust electrical characteristics necessary to handle inductive loads