GE UltraFresh Vent Smells: How to Clean the Internal... | appliancefaults.com

Technical Background:

The GE UltraFresh washing machine utilizes an internal vent system to dry the wash drum and prevent moisture buildup, which inhibits mold and mildew growth. The MCU (Main Control Unit) controls the operation of the wax motor to open and close the vent door. Voltage is supplied to the wax motor through a relay controlled by the MCU. A thermistor provides temperature feedback to the MCU.

Symptoms:

US homeowners are reporting a persistent musty or moldy smell emanating from the vent area of their GE UltraFresh washing machine, even after running cleaning cycles. This odor is particularly noticeable after washing loads and can transfer to clothing.

Possible Causes:

Biofilm buildup in the vent path due to inadequate drying cycles.
Clogged drain pump filter restricts proper drainage, leading to stagnant water and odor.
Detergent residue accumulation in the vent and drain lines.
Insufficient hot water usage promotes bacterial growth.
Improper loading practices impede airflow.
Faulty wax motor failing to open the vent door fully.

Solution:

1

Disconnect power to the washing machine by turning off the 20-amp breaker in the breaker panel.
2

Locate and remove the drain pump filter. Clean thoroughly under running water and reinstall. Ensure it is seated correctly.
3

Mix 1 cup of bleach with 1 gallon of hot water. Carefully pour the solution into the detergent dispenser and run a complete wash cycle on the 'Clean Washer' setting or the hottest water setting available.
4

Manually inspect the vent path. Access the vent assembly by removing the top panel (typically held by screws at the rear). Use a flashlight to inspect for blockages or biofilm. Clean with a brush and the bleach/water solution.
5

Check the wax motor functionality that operates the vent door. Disconnect the wire harness. With a multimeter, test for continuity. Replace if necessary. The wax motor should measure around 1.3K ohms.
6

Verify proper water temperature using a thermometer. Hot water should reach at least 120°F during the hot water cycle. Adjust your water heater if needed.
7

Run an empty wash cycle with Affresh washing machine cleaner to remove any remaining residue.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Lock-out/Tag-out (LOTO) procedures should be followed to prevent accidental re-energization. High voltage is present within the appliance; exercise caution when working near electrical components.

Prevention:

Run the 'Clean Washer' cycle monthly with Affresh. Ensure proper detergent dosage. Leave the washer door slightly ajar after each wash to promote airflow. Periodically inspect and clean the drain pump filter. Use hot water cycles regularly.

Expert Tip:

To force a vent cycle for testing, enter service mode by pressing and holding the Start/Pause and Temp buttons simultaneously for 3 seconds. Then, navigate to the vent test function using the cycle selector knob and press Start/Pause to activate. Listen for the wax motor energizing and observe the vent door opening.

Frequently Asked Questions

•How often should I run the 'Clean Washer' cycle?

It is recommended to run the 'Clean Washer' cycle at least once a month, or more frequently if you notice an odor.

•What type of detergent is best to prevent odor buildup?

Use HE (High Efficiency) detergent and avoid overdosing. Liquid detergent is generally better than powder detergent for preventing residue buildup.

•Where is the wax motor located and how difficult is it to replace?

The wax motor is typically located near the vent assembly, usually on top or in the rear of the machine. Replacement involves removing the top panel and disconnecting/reconnecting the wiring harness and mounting screws. The difficulty level is moderate.

GE UltraFresh Vent Smells: How to Clean the Internal Vent Path

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How often should I run the 'Clean Washer' cycle?

•What type of detergent is best to prevent odor buildup?

•Where is the wax motor located and how difficult is it to replace?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: