Description
The Welling RPG20D / RPG20B is an OEM-standard, single-phase Asynchronous AC Induction Blower Motor (20W). It is a resin-packed indoor fan motor engineered specifically for the high-wall evaporator (indoor unit) of residential mini-split air conditioning systems. This motor operates on standard mains alternating current (220V−240V) and features an integrated PG (Pulse Generator) Hall Effect Sensor, distinguishable by its secondary small 3-wire control plug. Rather than using multiple physical wires for different fan speeds, the air conditioner’s main PCB reads the PG speed feedback data and smoothly scales the voltage to deliver seamless transitions between Low, Medium, High, and Turbo fan modes. Technical Specifications Model Code: Welling RPG20D / RPG20B Motor Type: Single-Phase AC Induction Motor (Asynchronous) Power Output: 20W Operating Voltage: 220V−240V AC Frequency: 50Hz Poles: 4-Pole (Running speeds typically scale between 1100 to 1350 r/min) Current Draw: 0.21A to 0.27A Insulation Class: Class ECL / Class B (thermal overload protected) Enclosure: Molded Resin Pack (moisture-proof, dust-proof, and vibration-dampening) Compatible Brands & Systems Manufactured by Guangdong Welling Motor Manufacturing Co., Ltd. (one of the largest global suppliers of HVAC fan components), this 20W platform is a universal service component used across a massive range of 9,000 BTU to 12,000 BTU (0.75 to 1.0 Ton) non-inverter split systems. 1. Direct Part Number Interchanges If your original failing motor features any of the following alternate model numbers on its label, this motor is a direct functional replacement: YYW16-4-2631 (The base factory framework code) YKFG-20-4-10L (Midea internal parts inventory catalog code) RPG18F / RPG18H-2 / RPG18H-15 (Directly universal swaps sharing the exact same chassis) C7815M220SCF-01 2. Supported Air Conditioner Brands This specific motor design is widely utilized inside the indoor wall units of: Midea (The primary user of the Welling RPG motor series) Carrier TCL Voltas Toshiba (Specific regional residential air handler lines) Essential Replacement Checklist: When swapping out this motor, verify that the shaft configuration (the D-cut flat edge where the blower wheel screw tightens) matches the depth of your existing internal cylinder fan wheel. Additionally, always connect the wiring based on the color schematic printed directly on the new motor’s sticker label, as factory harness color orders can occasionally vary between production generations.






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