EAU57945601 Genuine DC Stepping Motor Assembly for LG Appliances, LG Stepper Motor Replacement Part

EAU57945601 is a genuine LG stepping motor assembly, often called a stepper motor. Instead of spinning freely, it moves in small, precise steps on command from the control board, which makes it ideal for positioning parts. We don't have the appliance or models on file for this number, so check that the label on your old motor reads EAU57945601 before you order.

What an LG stepper motor does and how it fails

Stepper motors are used wherever a part has to move to an exact position and stay there. In LG products that can mean swinging air conditioner louvres or vanes, opening and closing an air damper, or moving a flap or valve. The board sends a series of pulses and the motor turns a set amount for each one. When it fails, the part it drives stops moving or sticks in one position, you might hear clicking or buzzing without movement, or the appliance may show an error. A broken gear or seized linkage can cause the same symptoms, so check those too.

Part details

• Genuine LG part number EAU57945601
• DC stepping (stepper) motor assembly
• Moves in precise steps under board control
• Appliance and model fit not on file, match the old motor's label

Fitting a stepper motor

Isolate the appliance before opening any covers, and use a licensed electrician for hard-wired equipment. Before removing the old motor, note the position of the part it drives and how the shaft engages it, as the new motor needs to line up the same way. Route the lead away from moving parts. Power up and watch it run through its full travel.

Questions about this part

How can I tell if the stepper motor is the problem?

With the power isolated, check the part it drives moves freely by hand and the plug on the board is seated properly. If movement is free and the connection is good but nothing moves when the appliance asks it to, the motor is the likely fault.