GE Profile GFW850 UltraFresh: Loud Rattling Noise from... | appliancefaults.com

Technical Background:

The UltraFresh vent system is designed to remove excess moisture from the washer drum after a wash cycle. The MCU (Main Control Unit) controls the vent fan motor based on cycle selections and sensor readings. A 120V AC signal is sent to the fan motor relay, activating the fan. Voltage and amperage are monitored.

Symptoms:

The homeowner reports a loud rattling noise coming from the UltraFresh vent area of their GE Profile GFW850 washing machine, especially during the spin cycle.

Possible Causes:

Debris lodged in the vent fan assembly.
Loose vent fan motor mounting screws.
Damaged vent fan blades.
Worn or failing vent fan motor bearings.
Obstruction in the vent ductwork.
Resonance from unbalanced load during spin cycle affecting vent components.

Solution:

1

Disconnect power: Unplug the washing machine from the outlet or turn off the breaker at the breaker panel.
2

Access the vent assembly: Typically accessed from the rear panel. Remove the rear panel using a 1/4-inch nut driver.
3

Inspect for obstructions: Visually inspect the vent duct and fan for any debris (lint, small objects). Remove any obstructions.
4

Check fan blades and motor: Inspect the vent fan blades for damage. Try manually spinning the fan; it should spin freely. If not, the motor bearings may be failing.
5

Test the vent fan motor: Disconnect the vent fan motor connector. Use a multimeter to check for continuity through the motor windings. An open winding indicates a faulty motor. Also, with the machine plugged in and set to a drain/spin cycle, carefully measure the voltage at the connector – should be around 120V AC. Be extremely cautious when working with live voltage.
6

Replace components: If the fan blades are damaged or the motor is faulty, replace the vent fan assembly (part number can be found on the machine’s model sticker).
7

Reassemble and test: Reassemble the washing machine, ensuring all screws are tightened. Plug in the washer or turn on the breaker and run a test cycle to verify the rattling noise is gone.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Use Lock-Out/Tag-Out (LOTO) procedures to prevent accidental re-energizing of the circuit. High voltage is present when the machine is plugged in; exercise extreme caution.

Prevention:

Regularly clean the washing machine's detergent dispenser and run a washer cleaning cycle with a washing machine cleaner every month. Ensure proper leveling of the washing machine to minimize vibrations. Periodically inspect the vent area for lint build-up and clear it out.

Expert Tip:

To access the service mode on the GFW850, press and hold the Start/Pause and Soil Level buttons simultaneously for approximately 3 seconds. This will allow you to run diagnostic tests on individual components, including the vent fan. Refer to the service manual for specific test codes.

Frequently Asked Questions

•What is the part number for the vent fan assembly on my GE Profile GFW850?

The part number can vary slightly depending on the exact sub-model. Check the model number sticker on the washer (usually located inside the door or on the back panel) and then search for the vent fan assembly part specifically for that sub-model. A common part number is WH49X30515, but confirm before ordering.

•How do I properly level my washing machine to prevent future issues?

Use a bubble level on top of the washing machine. Adjust the leveling feet on the bottom of the machine until the bubble is centered. After adjusting, run a spin cycle to check for excessive vibration. If it still vibrates, re-adjust the feet until it's stable. Tighten the lock nuts on the leveling feet to secure them.

•What type of washing machine cleaner is recommended for the UltraFresh vent system?

Use a washing machine cleaner that is specifically formulated for high-efficiency (HE) washing machines. Affresh is a commonly recommended brand. Follow the instructions on the cleaner packaging for proper usage. Run a cleaning cycle monthly or as recommended by the manufacturer.

GE Profile GFW850 UltraFresh: Loud Rattling Noise from Vent - Repair Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the part number for the vent fan assembly on my GE Profile GFW850?

•How do I properly level my washing machine to prevent future issues?

•What type of washing machine cleaner is recommended for the UltraFresh vent system?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: