Whirlpool Refrigerator Display Says 'Cooling Off' and... | appliancefaults.com

Technical Background:

The "Cooling Off" message typically indicates that the main control unit (MCU) has detected a problem with the cooling system. This could be due to low voltage to the compressor, a faulty thermistor providing incorrect temperature readings, or a malfunction within the MCU itself. Voltage paths and sensor readings are critical inputs to the MCU's decision-making process.

Symptoms:

The Whirlpool refrigerator display shows "Cooling Off" and the unit is not turning on. The compressor is not running, and the refrigerator is not cooling.

Possible Causes:

Power supply issues (no power at the outlet).
Faulty main control board (MCU).
Defective thermistor(s) (open or shorted).
Compressor malfunction (locked rotor).
Start relay failure (open or shorted).
Wiring harness problems (loose connections).

Solution:

1

Disconnect the refrigerator from the 120V AC power outlet.
2

Verify the outlet is functional using a multimeter. Expected reading: 120V AC.
3

Access the main control board (MCU), typically located behind an access panel. Use a 1/4-inch nut driver to remove the panel.
4

Visually inspect the board for burned or damaged components.
5

Using a wiring diagram, trace the 120V AC power supply to the compressor start relay. Test for voltage using a multimeter.
6

Disconnect the thermistors and measure their resistance using a multimeter. Compare readings to the service manual specifications. Replace if out of range.
7

If the above steps don't resolve the issue, replace the main control board.

Safety Warning:

Disconnect the refrigerator from the power source before performing any repairs (LOTO - Lock Out/Tag Out). Be aware of high voltage present on the main control board and compressor circuits. Use caution when working with electrical components.

Prevention:

Regularly clean the condenser coils (located at the back or bottom of the refrigerator) to ensure proper heat exchange. Avoid overloading the refrigerator with food, which can strain the cooling system. Check the door seals for leaks, replacing as needed.

Expert Tip:

Some Whirlpool refrigerators have a service mode that can be accessed by pressing and holding specific buttons on the control panel simultaneously. Consult the service manual for the correct sequence. This can provide diagnostic codes and test functions.

Follow-up Questions:
• Question 1: Where exactly is the main control board located in my specific Whirlpool refrigerator model?
• Answer: The main control board's location varies by model. Generally, it's behind an access panel at the rear of the refrigerator, either near the bottom or towards the top. Consult your refrigerator's service manual or search online for a parts diagram to pinpoint its exact location.
• Question 2: How do I interpret the resistance readings I get from the thermistors?
• Answer: Thermistor resistance changes with temperature. You'll need the refrigerator's service manual or a thermistor resistance chart for your specific model. The chart will show the expected resistance value at different temperatures. Compare your measured resistance to the chart to determine if the thermistor is functioning correctly.
• Question 3: What is the best way to clean the condenser coils?
• Answer: Unplug the refrigerator. Locate the condenser coils (typically at the back or bottom). Use a vacuum cleaner with a brush attachment to remove dust and debris. You can also use a condenser coil brush, available at appliance parts stores, to gently scrub the coils. Always vacuum up any loosened debris.

Frequently Asked Questions

•Where exactly is the main control board located in my specific Whirlpool refrigerator model?

The main control board's location varies by model. Generally, it's behind an access panel at the rear of the refrigerator, either near the bottom or towards the top. Consult your refrigerator's service manual or search online for a parts diagram to pinpoint its exact location.

•How do I interpret the resistance readings I get from the thermistors?

Thermistor resistance changes with temperature. You'll need the refrigerator's service manual or a thermistor resistance chart for your specific model. The chart will show the expected resistance value at different temperatures. Compare your measured resistance to the chart to determine if the thermistor is functioning correctly.

•What is the best way to clean the condenser coils?

Unplug the refrigerator. Locate the condenser coils (typically at the back or bottom). Use a vacuum cleaner with a brush attachment to remove dust and debris. You can also use a condenser coil brush, available at appliance parts stores, to gently scrub the coils. Always vacuum up any loosened debris.

Whirlpool Refrigerator Display Says 'Cooling Off' and Won't Turn On: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where exactly is the main control board located in my specific Whirlpool refrigerator model?

•How do I interpret the resistance readings I get from the thermistors?

•What is the best way to clean the condenser coils?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: