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The Lennox 55W24 is a genuine OEM ZP36K5E-PFJ-830 scroll compressor rated at 29,100 BTU/h, configured for 220/240V single-phase 50 Hz service in international and export Lennox systems. It pressurizes and circulates R-410A refrigerant through the outdoor unit, delivering the mechanical work at the core of the cooling cycle. This factory replacement matches the original's 50 Hz electrical rating and capacity exactly.
Common failure symptoms: The system runs without cooling, the compressor hums but fails to start, breakers trip on startup, you hear loud grinding or rattling from the condenser, or the unit short-cycles due to internal overload protection. Oil staining and burnt terminals point to compressor burnout.
Why OEM matters: The 50 Hz, 220/240V rating makes correct part matching essential — a compressor built for a different frequency or voltage will run inefficiently or fail. The genuine Lennox 55W24 ensures the right displacement, POE oil charge, and electrical characteristics, preserving efficiency and warranty coverage where generic substitutes cannot.