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The OEM Lennox 18W47 is a Copeland ZP31K5E-TF5-830 scroll compressor rated at 31,200 BTUH, 200/230V, R-410A, three-phase. Engineered for Lennox systems running high-pressure R-410A refrigerant, its scroll design delivers smooth, efficient, and reliable compression with fewer moving parts and lower vibration than reciprocating alternatives.
Common failure symptoms include a system that runs without cooling, a compressor that buzzes or clicks but won't start, repeatedly tripped breakers, overload or phase-loss lockouts, and loud grinding or knocking. On three-phase units, incorrect phase rotation after service can cause noisy operation and poor cooling until the wiring is corrected.
Why OEM matters: Because R-410A runs at much higher pressures than legacy refrigerants, the genuine 18W47 is matched precisely to the 200/230V three-phase, R-410A specifications of your Lennox equipment. The correct OEM compressor ensures proper amperage, correct rotation, sufficient oil return, and full compatibility with your unit's contactor and controls — protecting performance and your warranty. Refrigerant recovery and installation should be handled by a licensed HVAC technician.