Qunda AC PCB With Display

Description

Product Description: QUNDA QD-U08PGC+ Universal A/C Control System The QUNDA QD-U08PGC+ is a highly reliable, universal electronic mainboard kit designed as an aftermarket replacement for wall-mounted split air conditioning units. It is specifically engineered to replace faulty or obsolete original equipment manufacturer (OEM) circuit boards, restoring full functionality to the AC system. A defining feature of this model is its compatibility with PG (Pulse Generator) fan motors, allowing for seamless, infinite/stepless indoor fan speed regulation just like an original factory setup. The kit comes complete with a main control board, a crystal-clear LED display receiver panel, a high-quality wireless remote control, dual temperature sensors (room and pipe coil), and a step-down power transformer. Key Technical Specifications Model: QD-U08PGC+ (Enhanced PG Motor Version) Application Scope: Wall-Mounted Split Air Conditioners (Non-Inverter / Fixed-Speed) Power Supply: 220V–240V AC, 50/60 Hz Fan Motor Control: Built-in PG motor feedback circuit for precise, stepless indoor blower fan control. Operating Modes: 5 core modes (Auto, Cooling, Dehumidify/Dry, Fan, Heating) Core Features: Auto-restart memory function (resumes settings after a power failure), time-delay compressor protection, periodic automatic defrost logic, and an independent outdoor fan relay. Compatible Machines & Brands Because it is a universal replacement system, its compatibility is determined by the electrical architecture of the air conditioner rather than a rigid brand name. It is fully compatible with fixed-speed (ON/OFF), non-inverter split AC systems ranging from 1.0 HP to 2.5 HP (approx. 9,000 BTU to 24,000 BTU). Compatible Component Requirements Indoor Fan Motor: Must be a PG (Pulse Generator) motor or a standard multi-tap motor adapted to the board’s feedback terminal wiring. System Type: Works strictly with conventional fixed-speed compressors (it will not drive 3-phase DC inverter compressors). Commonly Retrofitted Brands It is frequently used by HVAC technicians to fix wall-mounted split units from major manufacturers when original boards are discontinued or expensive, including: Midea & Carrier (Highly compatible with their massive catalog of PG-motor residential split units) Gree (A standard universal match for older fixed-speed fairy and viola series cabinets) LG & Samsung (Perfect for older generation conventional rotary compressor systems) Panasonic & National TCL, AUX, & Chigo Voltas, Lloyd, & Blue Star ⚠️ Installation Note: Replacing an AC mainboard involves configuring high-voltage lines, capacitor terminals, and feedback loops. Installation should always be performed by a qualified technician using the provided wiring diagram to prevent damage to the indoor blower motor.