GE Washer GFW850SSNWW: E3 Error Code Troubleshooting... | appliancefaults.com

Technical Background:

The E3 error code on a GE GFW850SSNWW washer indicates a problem with the door lock circuit. The MCU monitors the voltage and signal from the door lock switch to ensure the door is securely closed before initiating the wash cycle. A fault in the door lock, wiring, or the MCU itself can trigger the E3 error.

Symptoms:

The washer displays an E3 error code on the control panel. The door may not lock, or the wash cycle may not start.

Possible Causes:

Door lock switch failure
Wiring harness issue between the door lock and the main control board
Main Control Unit (MCU) failure
Loose or corroded connections
Obstruction preventing the door from fully closing
Defective door strike

Solution:

1

Disconnect power to the washer at the breaker panel.
2

Inspect the door lock switch for physical damage or debris. Clean as needed.
3

Check the wiring harness between the door lock and the MCU for continuity using a multimeter. Repair or replace damaged wires.
4

Measure the voltage at the door lock switch connector. You should see approximately 120V AC when the door is closed. Verify power supply using a multimeter.
5

Use a 1/4-inch nut driver to access the MCU. Inspect the connections for corrosion or looseness. Reseat the connectors.
6

If the wiring and door lock appear functional, consider replacing the door lock assembly.
7

As a last resort, if all other components are good, replace the MCU. Reprogramming may be needed by a certified tech.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Use Lock-Out/Tag-Out (LOTO) procedures to ensure the power remains off. High voltage is present in the appliance, posing a risk of electrical shock.

Prevention:

Regularly inspect the door seal and remove any obstructions that might prevent the door from closing properly. Avoid slamming the door shut.

Expert Tip:

You can sometimes temporarily clear the E3 error by unplugging the washer for 5 minutes and then plugging it back in. This may reset the MCU. To enter service mode, press and hold the Start/Pause button for 3 seconds, then simultaneously press the Temp and Spin Speed buttons.

Frequently Asked Questions

•What resistance should I expect to see across the door lock switch when the door is closed?

You should see close to 0 ohms (continuity) when the door is properly locked.

•How do I access the door lock switch on the GE GFW850SSNWW?

Typically, you'll need to remove the top panel and the front panel to gain access to the door lock assembly. Use a Phillips head screwdriver and a 5/16-inch socket.

•Where is the Main Control Unit (MCU) located on this model?

The MCU is usually located at the back of the washer, behind the control panel. You'll need to remove the top panel to access it.

GE Washer GFW850SSNWW: E3 Error Code Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What resistance should I expect to see across the door lock switch when the door is closed?

•How do I access the door lock switch on the GE GFW850SSNWW?

•Where is the Main Control Unit (MCU) located on this model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: