17122300003982 Outdoor Main Control Board Subassembly For US1-KFR78W / 17122300001076
17122300003982 Outdoor Main Control Board Subassembly For US1-KFR78W / 17122300001076
SKU:17122300003982
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Restore intelligent system regulation, fault diagnostics, and multi-circuit electronic expansion valve control to your multi-zone ductless heat pump condensing unit with this authentic OEM Outdoor Main Control Board Subassembly (Part 17122300003982 / PCB Reference 17122300001076). Engineered specifically for Midea and compatible OEM multi-zone inverter systems, this advanced master control board integrates an on-board two-digit LED diagnostic display, 4 dedicated EEV drive ports (A, B, C, D), high-current dual line chokes, and factory-routed wiring leads for stable all-weather operation.
Why HVAC Professionals & Technicians Choose This Board
- 100% Direct OEM Replacement: Built to exact mechanical mounting dimensions, terminal positions, and wiring harness pinouts for seamless drop-in installation with zero field alterations.
- Dedicated Multi-Zone EEV Stepper Control: Features 4 color-coded, labeled stepper motor headers (A, B, C, D) for precision individual metering to each indoor evaporator head.
- On-Board Two-Digit LED Fault Display: Provides direct real-time readout of system operating codes and diagnostic error definitions for rapid on-site troubleshooting.
- Comprehensive Quality Benchmarking: Every board undergoes 100% automated electrical load testing, high-voltage endurance checks, and full functional cycle verification prior to dispatch.
Technical Specifications
| Primary Part Number | 17122300003982 |
| PCB / Superseded Reference | 17122300001076 |
| Compatible Unit Model | US1-KFR78W Series |
| Unit Type | Outdoor Condensing Unit (~27,000 – 36,000 BTU / Multi-Zone) |
| Operating Voltage | 208-230V AC, 50/60 Hz |
| Zone Capability | Multi-Zone (Up to 4 Indoor Ports: A, B, C, D) |
| Diagnostics | Integrated 2-Digit LED Digital Code Display |
| Physical Dimensions | 11 × 8 × 2-1/2 in |
| Shipping Dimensions & Weight | 13 × 10 × 6 inches | 3.5 lbs |
| Product Condition | Brand New Factory Original Replacement |
Cross-Reference & System Compatibility
| Brand / System Line | Compatible Equipment |
|---|---|
| Midea & OEM Inverter Systems | Compatible with US1-KFR78W multi-zone ductless mini-split heat pump outdoor condensing units specifying part 17122300003982 |
Fitment Assurance Guarantee
Unsure if this main board matches your outdoor unit?
Multi-zone control boards must match exact factory firmware revisions 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.
