GE Refrigerator TurboCool vs TurboFreeze: Best Settings... | appliancefaults.com

Technical Background:

The TurboCool and TurboFreeze features on GE refrigerators are controlled by the Main Control Board (MCU). The MCU monitors temperature sensors (thermistors) and controls various components, including the compressor, evaporator fan, condenser fan, and damper. Voltage paths within the MCU control the relay for compressor operation and the opening/closing of the damper for the TurboCool/TurboFreeze function.

Symptoms:

The refrigerator is either not cooling sufficiently, or the freezer is not freezing properly. The TurboCool or TurboFreeze feature may not be activating, or is running constantly. The refrigerator may also be cycling on and off frequently.

Possible Causes:

Defective thermistor
Faulty damper control assembly
Compressor relay failure
Evaporator fan motor malfunction
Main Control Board (MCU) failure
Blocked defrost drain

Solution:

1

Unplug the refrigerator or turn off the breaker.
2

Locate the thermistor (usually near the evaporator coil) and test its resistance using a multimeter. Refer to the service manual for the correct resistance value at room temperature. If out of range, replace it.
3

Inspect the damper control assembly. Check for physical damage or obstruction. Test the damper motor with a multimeter for continuity. If faulty, replace it.
4

Locate the compressor relay. Check for burnt contacts or loose connections. Test the relay with a multimeter. If faulty, replace it.
5

Inspect the evaporator fan motor. Ensure it spins freely. Test the motor windings with a multimeter for continuity. If there is no continuity, replace the motor.
6

Examine the defrost drain for ice blockage. Use a hair dryer or hot water to melt the ice.
7

If the above steps don't resolve the issue, suspect a faulty Main Control Board (MCU). Replacement may be necessary after verifying all other components.

Safety Warning:

Disconnect power to the refrigerator at the breaker panel before performing any repairs. Use proper Lock-Out/Tag-Out (LOTO) procedures. Some components may carry 120V AC, so exercise caution when testing electrical circuits.

Prevention:

Regularly clean the condenser coils (located at the back or bottom of the refrigerator) every 6 months. Ensure proper ventilation around the refrigerator. Avoid overloading the refrigerator with food, which can restrict airflow. Check and clear the defrost drain annually.

Expert Tip:

Enter service mode by pressing and holding the 'Freezer Up' and 'Refrigerator Down' buttons simultaneously for 3 seconds. This will allow you to run diagnostic tests on various components.

Frequently Asked Questions

•What is the proper resistance range for the thermistor at 70 degrees Fahrenheit?

The proper resistance range for the thermistor at 70 degrees Fahrenheit typically falls between 5k ohms and 10k ohms. Consult the specific service manual for your model for the precise value.

•How do I access the Main Control Board (MCU) on this model?

The Main Control Board is usually located behind a panel on the back or top of the refrigerator. You will likely need to remove screws or clips to access it. Consult the service manual for specific instructions.

•What voltage should I expect to see at the compressor relay when the compressor is supposed to be running?

You should expect to see 120V AC at the compressor relay when the compressor is signaled to run by the Main Control Board.

GE Refrigerator TurboCool vs TurboFreeze: Best Settings for 2025 Models

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the proper resistance range for the thermistor at 70 degrees Fahrenheit?

•How do I access the Main Control Board (MCU) on this model?

•What voltage should I expect to see at the compressor relay when the compressor is supposed to be running?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: