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Designed as a direct replacement for the obsolete 000MMK-U and 000MMK-U00 models
Field-Ready Hardware: Includes mounting capscrews to streamline the TXV power assembly replacement process
By utilizing solid-state switching technology
Its manual reset design requires a technician to physically inspect the system before restoring operation
Lennox 38M78 Ambient Switch 328140-751 Designed as a direct replacementThis 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