Wayne Combustion 64420-SER2 Ignition Control Els PW 17895 What causes this limit switch

What causes this limit switch to trip frequently

For technicians performing HVAC compressor maintenance or manifold repairs

the 511-624-404 is specifically rated for 0' to 1999'

The 90-T40M3 White-Rodgers model is built with a closed construction and includes a universal mounting plate (multi-mount) to facilitate easy installation in tight control cabinets

ensuring reliable switching for compressors and motors

Wayne Combustion 64420-SER2 Ignition Control Els PW 17895 What causes this limit switchThe 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