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The 19F83 is a genuine OEM Lennox ZP42K6E-TF5 Copeland scroll compressor, rated at 3.5 tons for 208-230V, 3-phase operation. Serving as the pump at the center of your Lennox condensing unit, the compressor raises refrigerant pressure and circulates it through the system to reject heat and drive the cooling cycle. This ZP-series scroll compressor is designed for R-410A systems and delivers quiet, energy-efficient, high-capacity performance calibrated to Lennox specifications.
Common failure symptoms: the unit powers on but blows warm air, the compressor hums or clicks without starting, tripped breakers, hard starting, loud knocking or grinding, or repeated tripping on the thermal overload. A worn or seized compressor is the leading cause of a total loss of cooling.
Why OEM matters: choosing the factory-specified 19F83 ensures the correct 208-230V 3-phase electrical draw, tonnage, and internal oil charge for your Lennox system, protecting your warranty and restoring rated efficiency. Aftermarket compressors can mismatch electrical or capacity requirements and fail early. This component must be installed by a licensed HVAC professional using proper refrigerant recovery procedures.