GE Washer Error Code E48: Motor Drive Circuit Failure... | appliancefaults.com

Technical Background:

The E48 error code on a GE washer indicates a failure in the motor drive circuit. The Main Control Unit (MCU) monitors the voltage and current flow to the wash motor. If the MCU detects an anomaly, such as a short circuit, open circuit, or overcurrent, it will trigger the E48 error code. The MCU logic has error checking routines built-in, that measure input versus output voltage.

Symptoms:

US homeowners report the GE washer displays an E48 error code on the control panel. The washer may not start, or it may start but stop mid-cycle.

Possible Causes:

Faulty motor control board (MCU).
Wiring harness issue between the MCU and motor.
Defective motor.
Loose or corroded connections.
Overload condition causing the motor to shut down.

Solution:

1

Disconnect power to the washer at the breaker panel.
2

Locate the motor control board (MCU), typically behind the control panel or in the base of the machine.
3

Inspect the wiring harness between the MCU and the motor for any damage, kinks, or loose connections. Pay close attention to the connector pins. Use a terminal pick to gently tighten loose female terminals.
4

Using a multimeter set to AC voltage, check the voltage to the motor from the MCU during a wash cycle. You should see approximately 120V AC. No voltage or erratic voltage indicates an MCU problem.
5

Check the motor windings for continuity using a multimeter set to Ohms. Open windings (OL reading) indicate a defective motor. Also, check the motor for shorts to ground.
6

If the wiring and motor appear good, replace the motor control board (MCU). Use the exact OEM replacement part.
7

Reconnect power and test the washer through a complete wash cycle.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed. High voltage components are present and can cause serious injury or death.

Prevention:

• Avoid overloading the washer with excessive laundry.
• Regularly inspect the wiring harness for damage.
• Use high-efficiency (HE) detergent as recommended by the manufacturer.

Expert Tip:

After replacing the MCU, you may need to run a calibration cycle. Refer to the service manual for the specific procedure for your model. Usually involves entering service mode by pressing specific button combinations. For example, pressing and holding Start and Stop simultaneously for 3 seconds may enter service mode on some models.

Follow-up Questions:

Frequently Asked Questions

•How do I access the motor control board (MCU) on my GE washer?

The MCU location varies depending on the model. Typically, it's behind the control panel or inside the base of the washer. You'll likely need to remove screws and panels to access it. Refer to the service manual for your specific model.

•What type of multimeter should I use to test the voltage and continuity?

A standard digital multimeter with AC voltage, DC voltage, and Ohms (continuity) settings will work. Ensure the multimeter is rated for at least 600V AC/DC.

•Where can I find a replacement motor control board (MCU) for my GE washer?

You can find replacement MCUs at appliance parts retailers online, local appliance parts stores, or directly from GE's parts website. Make sure to order the correct part number for your specific washer model.

GE Washer Error Code E48: Motor Drive Circuit Failure Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the motor control board (MCU) on my GE washer?

•What type of multimeter should I use to test the voltage and continuity?

•Where can I find a replacement motor control board (MCU) for my GE washer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: