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For technicians performing HVAC compressor maintenance or manifold repairs
Resistant to the chemical properties of industrial lubricants and common refrigerants
The Schneider Electric (Barber Colman) 20-850 serves as a robust thermostat mounting plate designed for professional-grade HVAC control installations
Is the 40003916-036/U a different model
fan cycling typically requires an "Open Low" (P70A) action
Wayne Combustion 64420-SER2 Ignition Control Els PW 17895 For technicians performing HVAC compressorThe Wayne Combustion 64420 SER2 is a direct OEM ignition control module engineered for Wayne Series 2 oil burner systems. As a critical primary control, it manages the oil burner startup cycle, ensuring precise ignition timing and continuous flame supervision. This module is the official service replacement for the 64420 002, designed to resolve common field issues such as intermittent ignition, flame failure lockouts, or complete no start conditions