Kenmore Dryer Error Code Et: Communication Error... | appliancefaults.com

Technical Background:

The dryer's main control board communicates with the user interface (UI) board to relay settings and receive commands. error code Et indicates a breakdown in this communication. The main board sends signals (often 5V DC) to the UI board via a dedicated data line. If the voltage levels are incorrect or the data is corrupted, the error occurs.

Symptoms:

The homeowner reports the dryer displays an "Et" error code on the control panel and the dryer may not start or respond to commands. The display might be frozen or flickering.

Possible Causes:

Defective UI board.
Faulty main control board.
Wiring harness issue between the main board and the UI.
Loose wire connections.
Voltage supply problems to either board.
Software glitch on either control board.

Solution:

1

Disconnect power to the dryer at the breaker panel.
2

Locate the main control board and the UI board, typically behind the control panel and inside the back panel.
3

Inspect the wiring harness connecting the two boards for any visible damage (burnt wires, loose connections).
4

Using a multimeter, check the voltage supply to both boards. You should typically find 120V AC at the main board's input and 5V DC at the UI board's communication port.
5

Check the continuity of each wire in the harness using your multimeter to ensure no breaks. Repair or replace any damaged wires.
6

Reconnect the wiring harness and power on the dryer. If the error persists, replace the UI board first, as it is often the less expensive part.
7

If the issue remains after replacing the UI board, replace the main control board.

Safety Warning:

Always disconnect power to the dryer at the breaker panel before performing any repairs. Capacitors in the control boards can store a dangerous electrical charge even after the dryer is unplugged. Use caution when working with electrical components.

Prevention:

Regularly inspect the dryer's wiring harness for any signs of wear or damage. Ensure proper ventilation to prevent overheating, which can stress electronic components. Avoid overloading the dryer to reduce strain on the motor and control boards.

Expert Tip:

Some Kenmore dryers have a service mode. Check the tech sheet inside the dryer for instructions on how to enter the service mode. It can provide more detailed diagnostic information, including specific error codes and component tests.

Frequently Asked Questions

•How do I access the tech sheet for my Kenmore dryer?

The tech sheet is usually located inside the dryer, often taped to the back panel or tucked inside the control panel housing. You may need to remove a few screws to access it.

•What voltage readings should I expect at the main control board?

Typically, you should see 120V AC coming into the main control board. Check the wiring diagram on the tech sheet for the specific voltage requirements for your model.

•Where can I purchase replacement parts for my Kenmore dryer?

You can purchase replacement parts from appliance parts retailers like RepairClinic, AppliancePartsPros, or directly from the Kenmore parts website. Be sure to have your dryer's model number handy to ensure you order the correct parts.

Kenmore Dryer Error Code Et: Communication Error Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the tech sheet for my Kenmore dryer?

•What voltage readings should I expect at the main control board?

•Where can I purchase replacement parts for my Kenmore dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: