Viking Fridge Error Code E21: Ice Maker Motor Failure... | appliancefaults.com

Technical Background:

The MCU (Microcontroller Unit) monitors the ice maker motor's current draw and position. The E21 error indicates that the MCU has detected a fault in the ice maker motor circuit, either an open circuit, a short circuit, or an inability of the motor to complete its cycle. Voltage is supplied to the ice maker motor via a relay on the main control board, typically 120V AC.

Symptoms:

The ice maker is not producing ice, and the display shows error code E21. The ice maker motor may be completely unresponsive, or it may attempt to cycle but fails to complete the ice-making process.

Possible Causes:

Failed ice maker motor
Ice maker module failure
Wiring harness damage to the ice maker motor
Blocked or frozen ice maker
Faulty ice maker water valve
Main control board malfunction

Solution:

1

Disconnect power to the refrigerator at the breaker panel. Always LOTO.
2

Locate the ice maker assembly inside the freezer compartment. Typically held in by screws, usually a 1/4-inch nut driver will work.
3

Inspect the wiring harness connected to the ice maker motor for any visible damage or loose connections. Repair or replace as needed.
4

Using a multimeter, check the ice maker motor winding resistance. Refer to the service manual for the correct resistance range. Expect to see something like 50-100 ohms. If open or shorted, replace the motor.
5

Manually cycle the ice maker to check for any obstructions or binding. Remove any ice buildup that may be preventing the ice maker from turning.
6

If the motor windings are open or shorted, replace the ice maker assembly. Complete assembly replacement is often more reliable than motor-only replacement.
7

After replacing the ice maker, restore power to the refrigerator and monitor for proper operation. Check for ice production within 24 hours.

Safety Warning:

Disconnect power to the refrigerator at the breaker panel before performing any repairs. High voltage is present in the control panel and ice maker area. Use proper safety precautions.

Prevention:

Regularly clean the ice maker and freezer compartment to prevent ice buildup. Replace the water filter every 6 months to ensure proper water flow to the ice maker.

Expert Tip:

Some Viking refrigerators have a service mode that allows you to manually cycle the ice maker. Refer to the service manual for instructions on entering service mode. This can help confirm the motor's functionality.

Frequently Asked Questions

•Where can I find the service manual for my Viking refrigerator model?

You can typically find the service manual on the Viking website, or through a reputable appliance parts supplier. You will need your model number.

•How do I manually cycle the ice maker?

With the power off, carefully rotate the ice maker ejection arm. This can help diagnose binding issues. Some models have a test button. Be careful not to damage any components.

•What is the proper resistance range for the ice maker motor windings?

Refer to the service manual for your specific model. Typically, you should see between 50-100 ohms. An open circuit or short circuit indicates a faulty motor.

Viking Fridge Error Code E21: Ice Maker Motor Failure Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where can I find the service manual for my Viking refrigerator model?

•How do I manually cycle the ice maker?

•What is the proper resistance range for the ice maker motor windings?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: