Whirlpool TruCool™: Too Much Humidity in Crispers -... | appliancefaults.com

Technical Background:

The Whirlpool TruCool system uses an electronic control board (MCU) to manage temperature and humidity. The MCU regulates a damper that controls airflow to the crisper drawers. Voltage paths from the MCU to the damper motor are crucial for proper operation. Incorrect voltages or faulty components can lead to excessive humidity.

Symptoms:

Homeowners report that the crisper drawers in their Whirlpool TruCool refrigerator are consistently too wet, leading to premature spoilage of fruits and vegetables. The humidity control settings do not seem to be effective.

Possible Causes:

Faulty humidity control damper
Blocked or restricted drain line
Defective crisper drawer seals
Incorrect temperature settings
Air leaks into the refrigerator compartment
Malfunctioning electronic control board

Solution:

1

Unplug the refrigerator from the 120V AC outlet.
2

Inspect the humidity control damper for proper operation. Check for physical damage or obstructions. Measure the damper motor voltage using a multimeter (expect approximately 12V DC when the damper should be open). Replace if necessary.
3

Locate the drain line, typically at the back of the refrigerator. Clear any clogs using a flexible wire or warm water. Ensure water drains freely.
4

Examine the crisper drawer seals for tears or damage. Replace any damaged seals.
5

Verify that the refrigerator temperature settings are correct. The ideal temperature range is 35-38°F. Use a thermometer to confirm the actual temperature.
6

Check for air leaks around the door seals. Replace worn or damaged seals.
7

If the issue persists, the electronic control board may be faulty. Consult a qualified technician for diagnosis and replacement.

Safety Warning:

Always disconnect the refrigerator from the power source before performing any repairs. Use appropriate safety precautions when working with electrical components. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization.

Prevention:

Regularly clean the refrigerator interior and check the drain line for clogs. Inspect the door and crisper drawer seals for damage. Avoid overfilling the refrigerator, as this can restrict airflow.

Expert Tip:

To enter service mode on some Whirlpool TruCool models, simultaneously press and hold the 'Freezer Temp' and 'Light' buttons for 3 seconds. This allows for advanced diagnostics and testing.

Frequently Asked Questions

•How do I access the humidity control damper in my Whirlpool TruCool?

The humidity control damper is usually located behind the crisper drawers. You may need to remove the drawers and any surrounding trim to access it. Refer to your refrigerator's service manual for specific instructions.

•What voltage should I expect to see at the damper motor?

You should expect to see approximately 12V DC when the damper is supposed to be open, and 0V DC when it's closed. Use a multimeter to measure the voltage at the damper motor terminals.

•Where is the drain line located on my Whirlpool TruCool refrigerator?

The drain line is typically located at the back of the refrigerator, often behind a panel or near the compressor. It's usually a small rubber tube that carries condensation away from the evaporator coil.

Whirlpool TruCool™: Too Much Humidity in Crispers - Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the humidity control damper in my Whirlpool TruCool?

•What voltage should I expect to see at the damper motor?

•Where is the drain line located on my Whirlpool TruCool refrigerator?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: