Fridge PCB Invertor EBR73944222

Description

Product Description: LG EBR 79344222 Refrigerator Inverter Control BoardThe LG EBR79344222 (also stamped as structural board part number EBR793442) is a genuine factory-original manufacturer main power and frequency-conversion control assembly.As part of LG’s “Smart Inverter” appliance family, this PCB functions as the core power regulator. It monitors data from internal thermal sensors and translates it into variable-frequency voltage cycles. This variable output dictates the exact rotational speed of the compressor—allowing the fridge to smoothly scale its cooling power up or down rather than constantly shutting off and drawing massive power spikes to restart.Key Technical FeaturesModule Type: Smart Inverter Main Logic & Compressor Drive Board.Component Framework: Integrated high-capacity filtering inductor coil, smoothing capacitors to filter noisy grid lines, and a dedicated aluminum heatsink for cooling the onboard Power Intelligent Module (IPM) switching transistors.Voltage Input: Designed for standard single-phase AC grids ($220text{V–240V, 50Hz/60Hz}$).Compatible Mechanisms & Appliance ComponentsThe EBR79344222 is programmed with proprietary LG firmware and connection paths. It is strictly compatible with LG Smart Inverter compressors and specific multi-door or single-door refrigeration mechanisms:1. LG Smart Inverter Compressors (The Primary Load)Compatible Mechanisms: Highly specific LG BLDC/Three-Phase AC variable-speed hermetic compressors (such as the LG BSA075NHMV or similar Smart Inverter series models).Application: The onboard three-wire high-voltage harness outputs directly to the compressor’s $U, V, text{ and } W$ terminal pins. It is completely incompatible with LG’s premium Linear Inverter compressors or older fixed-speed 220V induction compressors.2. Specific LG Refrigerator ModelsThis board is widely deployed across a series of LG’s modern Top-Mount Freezer (Double-Door) and specific premium Single-Door configurations, notably:GL-B272SMTL (Commonly found in regional double-door models).GL-B282SLHG / GL-B282SLHL series double-door fridges.3. Cross-Compatible Part VariantsIn the appliance service trade, this module interacts with or replaces components across the same production chassis:Interchangeable Board Prints: EBR793442, EBR78083378, EBR797283, and EBR75686726.4. DC Brushless Fan & Defrost MechanismsCompatible Components: 12V DC evaporator fan motors, defrost heater tubes, and bimetal thermal fuses.Application: Since this is a unified control motherboard, it directly drives the timing of the mechanical defrost heaters and cycles the fan speed to push cold air across the cooling coils dynamically when the compressor ramps up.