Frigidaire Refrigerator Freezing Food: Troubleshooting... | appliancefaults.com

Technical Background:

The refrigerator's Main Control Unit (MCU) manages temperature by monitoring thermistors and controlling the compressor, evaporator fan, and damper. The thermistors send voltage signals to the MCU, indicating the temperature. The MCU then adjusts power to the various components based on programmed logic. A faulty thermistor or damper can disrupt this cycle, leading to over-cooling.

Symptoms:

The homeowner observes that food items in the fresh food compartment of their Frigidaire refrigerator are freezing. Vegetables, fruits, and even liquids are turning into ice. The freezer section seems to be operating normally.

Possible Causes:

Faulty Thermistor
Damper Control Malfunction
Airflow Obstruction
Temperature Control Board Failure
Overly Cold Setting

Solution:

1

Check the Thermistor: Use a multimeter to measure the thermistor's resistance. It should vary with temperature. Compare your reading to the refrigerator's service manual specifications. Replace if out of range.
2

Inspect the Damper Control: Ensure the damper door opens and closes smoothly. If it's stuck open, manually close it (if possible) and observe if the temperature normalizes. A faulty damper needs replacement.
3

Clear Airflow Obstructions: Remove items blocking vents inside the refrigerator. Ensure proper air circulation.
4

Verify the Temperature Setting: Make sure the temperature isn't set too low. Adjust the setting to a slightly warmer level, typically 37°F.
5

Test the Temperature Control Board: If other components test okay, the temperature control board might be the issue. Replacement requires disconnecting power and carefully swapping the board.
6

Check Door Seals: Ensure door seals are clean and create a tight seal to prevent warm air from entering. Replace if damaged.

Safety Warning:

Always disconnect power to the refrigerator at the breaker panel before attempting any repairs. Use proper Lock-Out/Tag-Out (LOTO) procedures. Internal components may carry 120V AC.

Prevention:

Regularly clean the refrigerator coils (condenser coils) located at the back or bottom of the unit. This prevents overheating and ensures efficient operation. Check door seals every six months and clean them with a mild detergent. Ensure proper airflow by not overcrowding the shelves.

Expert Tip:

Many Frigidaire models have a diagnostic mode accessible through a specific button sequence. Consult the service manual to activate this mode and retrieve error codes that may pinpoint the issue more accurately.

Frequently Asked Questions

•How do I find the service manual for my specific Frigidaire refrigerator model?

The service manual is often available online from appliance parts retailers or the manufacturer's website (Frigidaire). You will need your model number to find the correct manual. Search for "Frigidaire [Your Model Number] Service Manual."

•What resistance reading should I expect from a functioning thermistor at room temperature (70°F)?

The resistance value varies depending on the thermistor type. However, a common value is around 5,000-10,000 ohms at 70°F. Refer to the service manual for the exact specifications for your refrigerator model.

•How can I tell if the damper is electronically controlled or mechanically controlled?

An electronically controlled damper will typically have wires connected to it. A mechanically controlled damper will usually be adjusted by a dial or slide mechanism.

Frigidaire Refrigerator Freezing Food: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I find the service manual for my specific Frigidaire refrigerator model?

•What resistance reading should I expect from a functioning thermistor at room temperature (70°F)?

•How can I tell if the damper is electronically controlled or mechanically controlled?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: