Universal Inverter Air Conditioner Control System QD85U
The QD85U is a universal inverter control board designed for AC/DC inverter air-conditioning systems across multiple brands and models. Engineered for flexibility, precision, and reliability, this board provides advanced features such as dual-sensor monitoring, independent outdoor fan control, automatic restart, and comprehensive operating modes.
It is ideal for OEM, ODM, retrofit, and maintenance applications, offering professional performance and wide compatibility.
Specifications
| Model | Product Type | Compatibility | Working Modes | Fan Speeds |
| QD85U | Universal AC/DC Inverter A/C Control Board | Split Air Conditioner (up to 24000BTU) | Auto / Cool / Dry / Fan / Heat | Low / Medium / High |
| Temperature Range | Maximum input voltage | Minimum input voltage | Maximum output current | Maximum output frequency |
| 16°C – 30°C | AV240V | AC180V | 20A | 100Hz |
| Packing components | ||||
| Universal indoor board | Indoor unit sensors | Display panel | Fan motor wire | Plug-in start capacitor |
| Remote control | Universal outdoor board | Four-way valve wire | Compressor exhaust temperature sensor |
Features
Customization Options
• Branding: PCB logo printing, labeling, and packaging customization
• Firmware Adjustment: Brand-specific logic or temperature curve modifications
• Wiring Customization: Connector layout, harness length, or pin type
• Packaging: User manual, barcode, and retail box design
• Functional Expansion: Optional add-on modules for extended compatibility
Frequently Asked Questions
Find answers to frequently asked questions quickly. If you have any further questions, feel free to contact us.
QD85U
Does it include sensors?
Yes, it features dual sensors for ambient and coil temperature detection.
How long is the compressor restart delay?
The board includes a 3-minute safety delay before compressor restart.
What happens during a power outage?
The board automatically saves the last working mode and resumes after power returns.
What types of air conditioners can QD85U control?
It is compatible with most AC/DC inverter wall-mounted split A/C units for 24000BTU service power. Also we have different choice for another model; QD85 compatible with most AC/DC inverter wall-mounted split A/C units for 12000BTU service power. QD85C compatible with most AC/DC inverter standing cabinet A/C units for 24000BTU service power.
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