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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Standard replacement motors typically require a new run capacitor (check the nameplate for MFD rating) to ensure proper starting torque and motor longevity
This board is a confirmed fit for the FK4BNF003000AAAA air handler series
ECMs do not utilize a traditional run capacitor
the universal style mounting bracket simplifies retrofitting by aligning with existing mounting holes
Lennox 38M77 Pressure Switch 318973-401 Standard replacement motors typically requireThe Lennox 38M77 High Pressure Switch is a critical OEM safety component designed for R 410A HVAC systems. Engineered to monitor discharge line pressure, this switch prevents compressor damage by interrupting the control circuit when pressures exceed safe operating limits. With a factory calibrated trip setting of 640 psi and a reset threshold of 475 psi, it ensures precise high limit protection in commercial and industrial rooftop units and split