Frigidaire Refrigerator Error Code E8: Humidity Sensor... | appliancefaults.com

Technical Background:

The refrigerator's Main Control Unit (MCU) monitors the humidity sensor, a thermistor-like device. The sensor's resistance changes based on humidity levels. The MCU reads this resistance and adjusts the refrigerator's operation to maintain optimal humidity. An E8 error indicates that the MCU is receiving an out-of-range or no signal from the humidity sensor. Voltage typically runs at 5V DC.

Symptoms:

The homeowner notices an E8 error code on the refrigerator's display panel. The refrigerator may be running warmer than usual, or showing excessive frost build-up. The fresh food section may have issues maintaining proper humidity.

Possible Causes:

Faulty humidity sensor
Wiring harness damage or loose connection to the humidity sensor
Control board failure
Excessive moisture build-up near the sensor
Condensation drain blockage.

Solution:

1

Disconnect power to the refrigerator at the breaker panel.
2

Locate the humidity sensor; typically near the evaporator fan or in the fresh food section. Refer to the service manual for exact location.
3

Inspect the wiring harness and connector to the humidity sensor for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
4

Use a multimeter to test the humidity sensor's resistance. Compare the reading to the values specified in the service manual. An open or short circuit indicates a faulty sensor.
5

If the sensor is faulty, replace it with a new, OEM Frigidaire humidity sensor.
6

Check the condensation drain tube for blockages. Clear any debris using warm water and a small brush or pipe cleaner.
7

Reconnect power to the refrigerator and monitor for the E8 error code. If the error persists, the control board may be faulty and require replacement or licensed technician repair.

Safety Warning:

Always disconnect power to the refrigerator before performing any repairs. Use Lock Out Tag Out (LOTO) procedures to prevent accidental re-energizing. Some components may retain a high voltage charge even after disconnection. Wear appropriate safety gear, including eye protection and gloves.

Prevention:

Regularly clean the refrigerator's interior and check the condensation drain tube for blockages. Avoid placing hot foods inside the refrigerator, as this can cause excessive moisture build-up.

Expert Tip:

Some Frigidaire models have a service mode that allows you to manually test the humidity sensor. Consult the service manual for the specific key sequence to enter service mode on your model.

Frequently Asked Questions

•What is the typical resistance range for the humidity sensor on this Frigidaire refrigerator model?

The typical resistance range for the humidity sensor is between 5k and 20k ohms at room temperature (70-75 degrees Fahrenheit). Refer to the service manual for the precise specification for your specific model.

•How can I access the service mode on my Frigidaire refrigerator to test the humidity sensor?

The service mode access varies by model. Typically, it involves pressing a specific sequence of buttons on the control panel, such as 'Up-Down-Up-Down' or 'Freezer Temp - Refrigerator Temp - Freezer Temp'. Consult your refrigerator's service manual for the correct sequence.

•If the humidity sensor tests within the correct resistance range, what other components could be causing the E8 error?

If the humidity sensor tests good, the issue may lie with the wiring harness between the sensor and the control board, or a faulty control board itself. Check the wiring for continuity and shorts to ground. If the wiring is good, the control board is likely the issue and may require replacement or professional repair.

Frigidaire Refrigerator Error Code E8: Humidity Sensor Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range for the humidity sensor on this Frigidaire refrigerator model?

•How can I access the service mode on my Frigidaire refrigerator to test the humidity sensor?

•If the humidity sensor tests within the correct resistance range, what other components could be causing the E8 error?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: