Fan Spin-Up Compilation of Japanese Air Conditioner Outdoor Unit【Part3 Induction Motor Era】

About five years since my last upload, and as Part 3 of the very well-received "Air Conditioner Outdoor Unit Propeller Fan Startup Compilation" series, this time I've gathered startup scenes of propeller fans driven by induction motors (so-called AC motors), which were used in outdoor air conditioner units of a bygone era. Please enjoy the bold, dramatic startup unique to induction motors without inverter control — spinning straight up to full speed all at once, accompanied by the "click" of the relay! Note that while the compressors themselves are inverter-controlled, many of these units date from the early days of inverter air conditioners, and each model produces its own distinctive magnetostriction hum. I'd love for you to pay attention to that as well ♪ 0:00 Introduction, digest 0:38 Sanyo SAP-CV23ED (has a bit of a "do-re-mi inverter" quality to it! One of the very earliest inverter models) 1:28 Sharp AU-H28GY (listen for the inverter sound, almost like a GTO-VVVF ♪) 2:02 Sharp AU-M22DBS 2:43 Toshiba HAS-A282T4 3:17 Toshiba RAS-225UAV 3:58 National CU-U22K1 (the combination of an induction motor with a 2-blade fan is extremely rare!) 4:35 Mitsubishi Heavy Industries NC2214G 5:28 LG RO-220A1 (the only unit in this lineup that spins up without a relay click! I wonder if it uses phase control instead...) 6:08 Fifty ACO-22W (the compressor is also fixed-speed!) 6:25 Daikin RCYJ160F (I wasn't able to capture the full fan in frame, but this is an impressively powerful commercial unit!) 6:45 There were also variable-speed types. The variable-speed mechanism works via tap control, switching between motor windings, and produces a relay click when switching. 7:25 The motor operating on its own. This makes the "straight to full speed" characteristic easy to see. Also, pay attention to the coasting rotation when it stops — the way an outdoor unit's fan spins loosely in the wind is something unique to AC motors, which have no cogging torque. 9:37 The way the fan revs up with a rising whine during startup is also something unique to AC motors ♪ Please also check out Part 1 and Part 2 via the links below! Part 1 (Brushless DC motor, sensorless) →    • Fan start-ups collection of Japanese air c...   Part 2 (Brushless DC motor, sensored) →    • Fan start-ups collection of Japanese air c...   ■ About This Channel Welcome to the world of Air conditioner Enthusiasts! This channel features operation footage and teardown analysis of a wide range of real air conditioning units I've collected and disassembled over the years. Drawing on professional experience at an HVAC manufacturer along with specialized knowledge built up over time, I aim to go beyond simple operation showcases — exploring the design intent and acoustic characteristics behind each unit. Videos are organized into playlists by category — browse the topics below if any catch your interest. ■ Playlists ・Indoor Unit Operation →    • Indoor Units Video エアコン室内機シリーズ   ・Outdoor Unit Operation →    • Outdoor Units Video エアコン室外機シリーズ   ・Outdoor Unit Teardown (Propeller Fan Feature) →    • Outdoor unit propeller fan spinning video ...   ・Outdoor Unit Component Breakdown & Compressor Start-up/Operation Sounds (Volume Warning) →    • Attention to Volume⚠️  Compressor direct s...   ・Operating Sounds by Manufacturer & Model →    • 三菱電機のマルチエアコン室外機 MXZ-6017AS 冷房時の運転音 Noise o...   ・Defrost Cycle Collection →    • 【霜取り運転】三菱エアコン ズバ暖霧ヶ峰 室外機 MUZ-KXV2818 霜取り運転...   ・Gas Heat Pump (GHP) Units — Engine-Driven Air Conditioners →    • 【室外機運転音】三菱重工ガスヒートポンプエアコン(GHP)室外機 始動音～運転音 S...   ■ About the Creator ・X: https://x.com/Aircon_Kosuke I post on topics related to air conditioner acoustics and internal structure, along with updates on which units I'm filming next. Follows are always appreciated. #AirConditioner #OutdoorUnit #IndoorUnit