The Whirlpool W11266621 ACUASM is the main electronic control board for select high-efficiency top-load washing machines. Also known as the Appliance Control Unit (ACU), it manages critical operations such as wash cycle selection, spin speed, water temperature, and overall appliance functionality. If your washer is experiencing erratic behavior, won't start, or shows error codes, a faulty control board may be the cause. Key Features Genuine OEM Whirlpool part ensures compatibility and performance Manages all washer functions electronically Designed for precise cycle timing and power control Factory-tested for durability and stability Plug-and-play compatibility with factory connectors Specifications Part Number: W11266621 Type: Appliance Control Unit (ACUASM) Voltage: 120V Board Style: HERMY MID, AGI, PR Installation: Internal board behind control panel (requires access to control housing) Functionality: Controls motor, valve, sensors, and user interface Compatible Models MVWB765FC0 / MVWB765FC1 / MVWB765FC2 MVWB765FW0 / MVWB765FW1 MVWB766FW0 / MVWB766FW1 Why Choose This Item Fixes issues like non-starting washer, cycle errors, or flashing codes Ensures your washer runs efficiently and reliably OEM-grade construction ensures longevity and precision Restores original factory performance A cost-effective solution to avoid full appliance replacement Would you like help identifying symptoms of a failing control board before replacing it?