Hotpoint Washer Loud Jet Engine Noise at 1200 RPM: How... | appliancefaults.com

Technical Background:

The Motor Control Unit (MCU) controls the motor speed through pulse width modulation (PWM). Incorrect motor speed or excessive vibration due to mechanical issues will cause noise. The MCU monitors motor feedback via a tachometer. Voltage paths to the motor, drain pump, and water inlet valves must be intact and within specified voltage ranges (typically 120V AC).

Symptoms:

The homeowner reports a very loud, high-pitched noise, described as a jet engine, occurring during the 1200 RPM spin cycle of their Hotpoint washing machine. The noise is significantly louder than usual operation.

Possible Causes:

Worn or damaged drum bearings.
Foreign object lodged between the spin basket and outer tub.
Damaged or loose drive pulley.
Worn or loose motor coupling.
Damaged or unbalanced spin basket.

Solution:

1

Disconnect power to the washer at the breaker panel. Verify 0V AC at the outlet with a multimeter.
2

Remove the top panel of the washer using a 1/4-inch nut driver.
3

Inspect the drive pulley for any signs of damage or looseness. Tighten or replace as needed. Check the motor coupling.
4

Remove the spin basket. Carefully inspect for any foreign objects (coins, clothing) lodged between the basket and the outer tub.
5

Manually rotate the inner tub. Listen for any grinding or unusual noises that would indicate worn drum bearings. Check for excessive play in the drum shaft.
6

If bearings are suspected, disassemble the washer to access the outer tub and bearing assembly. Replace the bearings with a new bearing kit. You may need a spanner wrench for the tub nut.
7

Reassemble the washer and test the spin cycle. Verify the noise is eliminated.

Safety Warning:

Lock Out/Tag Out (LOTO) the power source before performing any repairs. High voltage is present inside the washer. Always use caution and proper safety procedures.

Prevention:

Regularly check for and remove any foreign objects from the washer tub. Avoid overloading the washer. Use the correct type and amount of detergent. Inspect the washer periodically for signs of wear or damage.

Expert Tip:

Enter diagnostic mode by pressing and holding the Start/Pause button for 3 seconds, then simultaneously pressing the Water Level and Soil Level buttons three times in rapid succession. This will allow you to run individual component tests to help isolate the source of the noise.

Frequently Asked Questions

•What type of grease should I use when replacing the drum bearings?

Use a high-quality, waterproof bearing grease specifically designed for washing machine applications. A lithium-based grease is generally recommended.

•How do I remove the spin basket if it's stuck?

You may need a spin basket removal tool. Penetrating oil can also help to loosen a stuck spin basket. Apply penetrating oil around the base of the basket and let it sit for several hours before attempting removal.

•What torque should I use when tightening the tub nut after replacing the bearings?

Refer to the service manual for the specific torque specification for your model. Generally, it's between 40-50 ft-lbs. Using a torque wrench is crucial to prevent over-tightening and damaging the tub or nut.

Hotpoint Washer Loud Jet Engine Noise at 1200 RPM: How to Fix

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What type of grease should I use when replacing the drum bearings?

•How do I remove the spin basket if it's stuck?

•What torque should I use when tightening the tub nut after replacing the bearings?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: