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The genuine OEM Lennox 11K56 (Copeland ZP16KAE-PFV-830) is a 15,650 BTUH scroll compressor for 208/230V, single-phase, R-410A systems. Scroll technology compresses refrigerant with two interleaved scrolls, delivering quieter, more efficient, and more reliable operation than older reciprocating designs. Built to Lennox factory specification, it matches the exact capacity and electrical characteristics your unit requires.
Common failure symptoms: the outdoor unit runs but cooling drops off, the compressor hums and trips on start, breaker or overload tripping, a loud metallic knock from a broken scroll, or locked-rotor amp draw with no start. Open, shorted, or grounded windings are common electrical failure modes that condemn a scroll compressor.
Why OEM matters: Lennox rates efficiency (SEER), refrigerant charge, and warranty coverage around the factory compressor. Installing the matched 11K56 preserves rated R-410A performance and protects the sealed system, while generic substitutes risk oil-return problems, lost capacity, and voided warranty. Always replace the liquid-line filter drier, pull a deep vacuum, and weigh in the correct R-410A charge. Never mix R-410A and R22 components — this compressor is designed exclusively for R-410A operation.