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The genuine OEM Lennox 84M91 is a Copeland ZP67KCE-TFE-830 scroll compressor rated at 67,500 BTUH, built for 575V three-phase commercial power and R-410A refrigerant. This high-capacity compressor is the core of larger Lennox rooftop and commercial condensing units, pressurizing refrigerant vapor to drive the cooling cycle with the durability and efficiency of Copeland Scroll technology.
Common failure symptoms: A failing three-phase compressor may trip breakers or overloads on startup, run without cooling, produce loud knocking or grinding, or fail to start at all. Watch for phase-imbalance faults, overheating, oil around the base, and windings that test open, shorted, or grounded. Reversed rotation on three-phase units can also indicate a wiring or contactor problem worth checking first.
Choosing the OEM Lennox 84M91 ensures an exact match to your unit's capacity, 575V electrical requirements, and refrigerant charge. Factory-correct parts protect warranty coverage and maintain rated performance, while generic substitutes risk voltage and displacement mismatches. Ships same day to minimize costly commercial downtime.