{"product_id":"original-main-control-board-subassembly-17122300003977-for-us1-kfr78w-bp3t3n1-d31-outdoor-unit-17122300001076","title":"Compatible with Midea Air Conditioner - Main Control Board Subassembly 17122300003977 For US1-KFR78W\/BP3T3N1-D31 Outdoor Unit \/ 17122300001076","description":"\u003cp\u003eRestore dependable, high-efficiency heating and cooling performance to your tri-zone ductless mini-split system with this genuine OEM Outdoor Main Control Board Subassembly. Engineered to exact factory specifications, this heavy-duty inverter board ensures precise compressor frequency modulation, synchronous multi-zone electronic expansion valve management, and reliable year-round thermal stability.\u003c\/p\u003e\n\n\u003ch3\u003eWhy HVAC Professionals \u0026amp; Technicians Choose This Board\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% Direct Drop-In OEM Replacement:\u003c\/strong\u003e Manufactured to identical factory mounting dimensions, terminal points, and plug-and-play wiring connectors for seamless installation with zero field modifications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Tri-Zone Inverter Management:\u003c\/strong\u003e Advanced multi-core microprocessors dynamically regulate 3-port refrigerant distribution, ensuring rapid temperature pull-down and energy-saving variable-speed operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Weather \u0026amp; Thermal Protection:\u003c\/strong\u003e Industrial-grade conformal moisture coating, reinforced heat sinks, and surge-protected circuits safeguard against humidity, condensation, and summer heat stress.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Factory Quality Verification:\u003c\/strong\u003e Every unit undergoes 100% automated electrical load testing, high-voltage insulation checks, and full functional cycle verification prior to dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px; margin-bottom: 20px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold; width: 40%;\"\u003ePrimary Part Number\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e17122300003977\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCompatible Unit Model\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eUS1-KFR78W\/BP3T3N1-D31\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePCB Reference Number\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e17122300001076\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eUnit Application\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eTri-Zone Outdoor Condenser Inverter Control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e230V AC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eZone Configuration\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMultizone (3-Zone \/ Tri-Zone, 27K–28K BTU)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePhysical Dimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e8-9\/16 × 7-1\/16 × 1-13\/16 in (218 × 180 × 46 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePackage Dimensions \u0026amp; Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e12 × 10 × 8 inches | 4.0 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n\u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProduct Condition\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBrand New Factory Original Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCross-Reference \u0026amp; System Compatibility\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 10px; margin-bottom: 20px;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"border-bottom: 2px solid #e1e3e5; text-align: left;\"\u003e\n      \u003cth style=\"padding: 8px; width: 40%;\"\u003eSystem Series\u003c\/th\u003e\n      \u003cth style=\"padding: 8px;\"\u003eCompatible Condenser Models\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e1e3e5;\"\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eMulti-Zone Outdoor Mini-Split\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px;\"\u003eUS1-KFR78W\/BP3T3N1-D31 and compatible 27K\/28K 3-Zone outdoor condensers\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFitment Assurance Guarantee\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eUnsure if this control board matches your outdoor unit?\u003c\/strong\u003e\u003cbr\u003eOutdoor inverter boards must match exact factory revision numbers and terminal layouts. Avoid costly downtime and return shipping delays—simply take a quick photo of your existing board barcode label or outdoor unit nameplate and contact us. Our HVAC technical specialists will verify exact compatibility for you within 12 hours.\u003c\/p\u003e","brand":"HVAC Parts Center","offers":[{"title":"Default Title","offer_id":67613883301999,"sku":"17122300003977","price":118.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/9113\/8927\/files\/main-control-board-subassembly-17122300003977-for-us1-kfr78w-bp3t3n1-d31-outdoor-unit-17122300001076-1.jpg?v=1790951217","url":"https:\/\/hvacrefrigerationparts.com\/products\/original-main-control-board-subassembly-17122300003977-for-us1-kfr78w-bp3t3n1-d31-outdoor-unit-17122300001076","provider":"HVAC Parts Center","version":"1.0","type":"link"}