Lennox 38M78 Ambient Switch 318423-701 Durable Construction: Built with a

Durable Construction: Built with a cast bronze body and brass trim to resist corrosion and withstand fluid temperatures from 35

the failure is likely concentrated in the HK46ER253 module

An insertion crankcase heater provides more efficient heat transfer by being submerged in a well within the sump

The double pole single throw configuration allows for simultaneous control of multiple electrical circuits

This 10x9x5/8 blower wheel features a clockwise (CW) rotation and is constructed from heavy-duty galvanized steel to withstand the high static pressures common in modern HVAC systems

Lennox 38M78 Ambient Switch 318423-701 Durable Construction: Built with aThis Lennox 38M78 Ambient Switch is a critical pressure actuated component designed for head pressure control in low ambient cooling applications. Engineered for precision, this low ambient pressure switch ensures reliable operation of your HVACR system when outdoor temperatures drop, preventing compressor slugging and maintaining the necessary pressure differential for efficient thermal transfer. The Lennox 38M7801 features a specific cut in point of