【Air Conditioner Mainboard】Specifically designed to perfectly match the listed models; all connectors, mounting holes, and component layouts are consistent. No splicing, soldering, or bracket modifications are needed. To ensure compatibility, please compare the printed number and physical shape of your old board with our product photos — order only if they fully match. 【Air Conditioner Circuit Board】All large through-hole components, including capacitors and transformers, are secured with high-melting-point solder and reinforced with silicone glue at the bottom. This prevents connection failures caused by continuous fan vibration — a common weakness of low-cost circuit boards. 【Air Conditioner Control Board】Despite its affordable price, this board includes overcurrent protection and a compressor delay timer to prevent damaging short cycles. The onboard fuse is replaceable, providing extra safety for the compressor and fan motor. 【PCBA Circuit Board】Each mainboard is fully powered on and functional tested, including relay timing, sensor inputs, and fan outputs, to ensure no surprises during installation. The PCB has large, clear terminal labels, making it easy even for first-time DIY users to replace. No programming or additional adapters are required. Air conditioner mainboard replacement parts，For E123995 A010283 V1.1, Manufacturer: bcmy