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The genuine OEM Lennox 98W55 is an Interlink ABA051DAA scroll compressor rated at 53,500 BTUH, built for three-phase 380V (max) systems operating on R-410A across a 22–60 Hz range. This high-capacity scroll compressor is the core of larger commercial and light-commercial Lennox condensing units, compressing and circulating refrigerant to deliver dependable cooling with the smooth, low-vibration performance scroll technology is known for.
Common failure symptoms: Typical signs of compressor failure include a system that runs without cooling, tripped breakers or blown fuses, loud humming or grinding, phase-imbalance or locked-rotor faults, and repeated shutdowns on internal thermal overload. Grounded or open windings measured at the terminals confirm replacement is needed.
Why OEM matters: The 98W55 is matched to Lennox's exact three-phase electrical, displacement, and R-410A refrigerant specifications. A factory-authentic compressor preserves rated capacity and efficiency, ensures correct phase rotation and starting behavior, and keeps warranty coverage valid. Aftermarket units risk capacity and voltage mismatches. Confirm proper phasing, evacuate the system, and charge to spec during installation.