Amana Washer Not Spinning Fast Enough: Troubleshooting... | appliancefaults.com

Technical Background:

The Amana washer's Motor Control Unit (MCU) controls the motor speed during the spin cycle. The MCU receives feedback from sensors to adjust the motor's voltage and current, ensuring proper spin speed. Voltage paths from the MCU to the motor, clutch solenoid, and speed sensor need to be verified.

Symptoms:

US homeowner observes that their Amana washing machine isn't spinning fast enough, especially when washing heavy loads of towels. Clothes are excessively wet after the cycle.

Possible Causes:

Worn or loose drive belt.
Failing motor coupling.
Clogged drain pump or drain hose.
Worn clutch assembly.
Defective motor or motor windings.
Issues with the main control board (MCU).

Solution:

1

Unplug the washer from the 120V AC outlet.
2

Visually inspect the drive belt for wear, cracks, or looseness. Replace if necessary.
3

Check the motor coupling for signs of damage. A cracked or broken coupling indicates a need for replacement.
4

Examine the drain pump and drain hose for any obstructions. Clear any blockages.
5

Test the clutch assembly. A worn clutch may slip during high-speed spin. Replacing the clutch may require special tools.
6

Test the motor windings with a multimeter. Check for continuity and resistance per the service manual. Measure resistance with the unit unplugged and the wires disconnected.
7

Inspect the wiring harness connecting the motor to the MCU. Look for loose connections or damaged wires. Using a multimeter, verify the voltage to the motor from the MCU during the spin cycle. Consult the service manual for expected voltage (likely around 90-120V AC).
8

As a last resort, replace the MCU. Ensure the new MCU is programmed correctly. Use a 1/4-inch nut driver to remove the control panel screws.

Safety Warning:

Always disconnect power to the appliance before attempting any repairs. High voltage is present when the washer is plugged in. Use proper Lock-Out/Tag-Out (LOTO) procedures.

Prevention:

Avoid overloading the washer. Regularly clean the drain pump filter. Check the drive belt and hoses periodically for wear. Use appropriate amount of HE detergent.

Expert Tip:

Amana washers often have a service mode that allows you to run diagnostic tests, including a high-speed spin test. Consult the service manual or search online for the specific key sequence to enter service mode on your model.

Frequently Asked Questions

•What is the proper belt tension on this model?

The belt tension should allow for approximately 1/2 inch of deflection when pressed midway between the pulleys.

•What are the typical resistance values for the motor windings?

Typical resistance values vary by motor model. Refer to the service manual. Expect low resistance (a few ohms) between windings and very high resistance (open circuit) to the motor frame.

•How do I access the drain pump to check for clogs?

Typically, the drain pump is accessible through a service panel at the bottom front of the washer. You may need a 5/16-inch socket or nut driver to remove the panel.

Amana Washer Not Spinning Fast Enough: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the proper belt tension on this model?

•What are the typical resistance values for the motor windings?

•How do I access the drain pump to check for clogs?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: