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This 6-pin wire harness is a critical interface for the system’s control logic
fan control
this component ensures sustained electrical isolation during high-voltage sparking sequences
if the unit fails to sense flame after the trial period
Lennox 51M87 Pressure Switch 340793-762 This 6-pin wire harness isThe Lennox 51M87 is a precision engineered furnace pressure switch designed for critical venting safety within Lennox HVAC systems. This 1. 6" WC SPDT N. O. pressure switch functions as a fail safe, ensuring the inducer motor is generating adequate static pressure before allowing the ignition sequence to proceed. The 51M8701 is the identical direct replacement, maintaining the exact factory set point of 1. 60 inches of water column. As a Single Pole
