Viking Refrigerator Error Code E5: Ambient Temperature... | appliancefaults.com

Technical Background:

The E5 error code on a Viking refrigerator typically indicates a problem with the ambient temperature sensor circuit. The Main Control Unit (MCU) monitors the voltage signal from this sensor to determine the surrounding air temperature. If the voltage is outside the acceptable range, the MCU interprets this as a fault and displays the E5 error. Voltage may be as low as 5V DC on the sensor circuit.

Symptoms:

The homeowner reports the refrigerator is not cooling properly, and the display shows an E5 error code. The unit may also be cycling on and off more frequently than usual.

Possible Causes:

Faulty ambient temperature sensor
Wiring harness issue to the sensor
Loose connection at the control board
Control board failure
Extreme ambient temperature outside refrigerator operating range

Solution:

1

Disconnect power to the refrigerator at the breaker panel.
2

Locate the ambient temperature sensor, typically near the top front of the refrigerator compartment. Access may require removing trim panels using a 1/4-inch nut driver.
3

Inspect the wiring harness and connector to the sensor for any signs of damage or corrosion.
4

Using a multimeter, measure the resistance of the ambient temperature sensor. Refer to the service manual for the correct resistance value at the current ambient temperature. A reading significantly outside this range indicates a faulty sensor.
5

If the sensor is faulty, replace it with a new, OEM Viking ambient temperature sensor.
6

Reconnect the wiring harness and reassemble any removed trim panels.
7

Restore power to the refrigerator at the breaker panel.

Safety Warning:

Always disconnect power to the refrigerator at the breaker panel before performing any repairs. Lock Out / Tag Out (LOTO) procedures should be followed to prevent accidental re-energizing of the circuit. Be aware of high voltage components within the refrigerator's control panel.

Prevention:

Regularly clean the refrigerator's condenser coils to ensure proper airflow and prevent overheating. Check the door seals for leaks to maintain consistent internal temperature and reduce stress on the cooling system.

Expert Tip:

After replacing the sensor, you may need to clear the error code from the control board. Some Viking models allow you to enter a service mode by pressing and holding specific button combinations (consult the service manual for the correct sequence for your model). From the service mode you can clear the error history.

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 certified Viking appliance repair technician. The model number is usually located inside the refrigerator compartment.

•What is the correct resistance range for the ambient temperature sensor at 70 degrees Fahrenheit?

Refer to the service manual for your specific model, as the resistance values can vary. However, a typical range is between 5,000 and 10,000 ohms.

•How do I test the wiring harness for continuity?

Disconnect power to the refrigerator. Using a multimeter set to continuity mode, place one probe on one end of the wire and the other probe on the other end. A beep or a low resistance reading indicates continuity. Check each wire in the harness.

Viking Refrigerator Error Code E5: Ambient Temperature Sensor 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?

•What is the correct resistance range for the ambient temperature sensor at 70 degrees Fahrenheit?

•How do I test the wiring harness for continuity?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: