Work Performed: Responded to no-cooling complaint for Lennox ductless cooling-only unit (installed 2021 by another company) Tested system in cooling mode—no cool air from indoor unit, no hot air from outdoor fan discharge Connected gauges and found suction pressure at 220 psi, which is unusually high Suspected overcharge; attempted pump-down procedure by closing liquid line to force refrigerant into outdoor unit Suction pressure did not drop, indicating the compressor is not compressing or moving refrigerant Compressor was running but sounded noisy Removed top panel and disconnected compressor wiring from PCB Tested compressor windings: all three windings read 1.4 ohms with no short to ground—electrically OK Despite correct electrical readings, compressor is not functioning mechanically Inspected all other components—no issues found Compared performance to identical unit at front of home: pump-down worked normally, confirming fault isolated to rear compressor Cause of failure unknown—c