Amana Refrigerator Crisper Drawers Too Cold:... | appliancefaults.com

Technical Background:

The refrigerator's MCU monitors temperatures via thermistors and controls the damper door to regulate cold airflow. The MCU adjusts compressor run time based on the set temperature. Erroneous sensor data or MCU failure can result in continuous cold air being directed to the crisper drawers.

Symptoms:

US homeowner observations of Amana refrigerator crisper drawers being too cold, leading to vegetables freezing.

Possible Causes:

Thermistor malfunction affecting temperature sensing.
Damper door stuck open, allowing too much cold air in.
MCU (Main Control Unit) failure misinterpreting sensor data.
Air leaks around the crisper drawer seals.
Incorrect temperature setting (too cold).
Blocked return air vents restricting airflow.

Solution:

1

Unplug the refrigerator or turn off the breaker. Use appropriate Lock Out Tag Out (LOTO) procedures.
2

Inspect the crisper drawer seals for damage or gaps. Replace if necessary.
3

Locate the damper door assembly (usually in the back of the fridge). Manually check if it moves freely. If stuck open, try lubricating the hinge with silicone grease.
4

Using a multimeter, test the thermistor resistance. Refer to the Amana service manual for the correct resistance value at a specific temperature (e.g., 5k ohms at 77°F). Replace if out of range.
5

Check the air vents (both supply and return) for obstructions. Clear any ice or debris.
6

Verify the refrigerator's temperature setting. A setting of 37°F is typically recommended. Use a refrigerator thermometer to confirm the internal temperature.
7

If issues persist, suspect a faulty MCU. This requires licensed technician diagnosis and possible replacement.

Safety Warning:

Disconnect power before working on any electrical components. Refrigerators operate on 120V AC. Use caution when working with electrical circuits. Lock Out Tag Out procedures are mandatory before servicing to prevent accidental energization.

Prevention:

Periodically clean the refrigerator, including wiping down the door seals. Inspect air vents for obstructions. Avoid overpacking the crisper drawers, as this can restrict airflow. Annually check the temperature using a thermometer.

Expert Tip:

Some Amana refrigerators have a service mode. Entering this mode (check the service manual for the specific sequence, it may involve pressing and holding certain buttons on the control panel) allows you to run diagnostic tests and view sensor readings directly.

Frequently Asked Questions

•What is the typical resistance range for the thermistor at room temperature?

The resistance range varies depending on the specific thermistor model, but a common range is between 5k and 10k ohms at 77°F (25°C). Consult the Amana service manual for the exact specifications for your refrigerator model.

•Where is the damper door typically located, and how do I access it?

The damper door is usually located in the back of the refrigerator compartment, often near the top. You may need to remove a rear panel or housing to access it. Refer to the Amana service manual for detailed disassembly instructions.

•If the thermistor tests good, what is the next most likely cause of the freezing problem?

If the thermistor is functioning correctly, the next most likely cause is a faulty damper door mechanism or a failing MCU (Main Control Unit). The damper might be stuck open, or the MCU might be misinterpreting sensor readings and not regulating the airflow properly. A professional appliance technician is best suited to troubleshoot the MCU.

Amana Refrigerator Crisper Drawers Too Cold: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range for the thermistor at room temperature?

•Where is the damper door typically located, and how do I access it?

•If the thermistor tests good, what is the next most likely cause of the freezing problem?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: