Hotpoint Fridge Crisper Drawer Too Cold: Freezing... | appliancefaults.com

Technical Background:

The refrigerator's MCU (Main Control Unit) relies on thermistors to monitor temperature. These thermistors provide a variable resistance signal to the MCU, which then adjusts the damper control assembly to regulate airflow between the freezer and refrigerator compartments. Improper voltage readings to the MCU due to failing thermistors or damper motor can cause this.

Symptoms:

US homeowner observations indicate that the crisper drawers in their Hotpoint refrigerator are excessively cold, leading to the freezing of vegetables.

Possible Causes:

Thermistor malfunction
Damper control assembly failure
MCU (Main Control Unit) issue
Airflow obstruction
Incorrect temperature setting

Solution:

1

Unplug the refrigerator from the 120V AC outlet and engage Lock Out Tag Out (LOTO).
2

Locate the thermistor, typically near the evaporator coil. Use a multimeter to test its resistance. Compare the reading to the tech sheet's resistance chart at the fridge's current temperature. Replace if outside tolerance.
3

Inspect the damper control assembly. Ensure it opens and closes freely. If it's stuck open or closed, replace the damper.
4

Check for any obstructions blocking airflow from the freezer to the refrigerator compartment. Clear any ice buildup or debris.
5

Verify the refrigerator's temperature setting. It should be set between 37-40°F. Adjust as needed.
6

Access the MCU (Main Control Unit). Inspect for any burned components. Replace if damaged.
7

Reassemble the refrigerator and plug it back in. Monitor the temperature for 24 hours to ensure it stabilizes.

Safety Warning:

Always disconnect power to the refrigerator before performing any repairs. Use Lock Out Tag Out (LOTO) procedures. Be aware of potential high voltage components within the appliance. Improper repairs can lead to electrical shock or appliance damage.

Prevention:

Regularly clean the refrigerator's interior, ensuring no food debris blocks the vents. Periodically check the temperature settings. Annually inspect the door seals for proper sealing.

Expert Tip:

To quickly diagnose a damper motor, listen closely when you adjust the fridge temperature setting. You should hear the motor actuating the damper door. Also, a common service mode sequence is pressing and holding the 'Freezer' and 'Power Freeze' buttons simultaneously for 3 seconds. This might show error codes related to temperature sensors or damper function.

Frequently Asked Questions

•What is the typical resistance range for a refrigerator thermistor at 35°F?

The resistance will vary based on thermistor type. Consult the tech sheet. A common range at 35°F is 5,000-10,000 ohms.

•How do I access the damper control assembly in my Hotpoint refrigerator?

Typically, you'll need to remove the light housing or rear panel inside the refrigerator compartment. The damper is often located near the top vent.

•Where is the main control unit (MCU) located in this refrigerator model?

The MCU is usually found behind the refrigerator, often in a housing accessible after removing the back panel. Disconnect power before accessing.

Hotpoint Fridge Crisper Drawer Too Cold: Freezing Vegetables Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range for a refrigerator thermistor at 35°F?

•How do I access the damper control assembly in my Hotpoint refrigerator?

•Where is the main control unit (MCU) located in this refrigerator model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: