GE Washer Error Code E49: Motor Overheat Troubleshooting... | appliancefaults.com

Technical Background:

The MCU (Motor Control Unit) monitors the motor temperature via a thermistor. When the motor temperature exceeds a pre-set limit, the MCU generates the E49 error and shuts down the motor to prevent damage. The MCU controls motor operation via relays and monitors feedback from the thermistor.

Symptoms:

The washer displays an E49 error code and may stop mid-cycle. The motor may feel hot to the touch, or the washer may not start at all.

Possible Causes:

Overloaded washer exceeding weight capacity.
Obstruction in the tub or pump impeller restricting motor movement.
Worn motor windings causing excessive heat generation.
Faulty motor control board (MCU) relay.
Defective thermistor on the motor.
Low line voltage to the washer.

Solution:

1

Unplug the washer from the outlet and allow the motor to cool down for at least 30 minutes.
2

Check the motor for any obstructions. Remove the back panel using a 1/4-inch nut driver to access the motor. Inspect for foreign objects.
3

Verify the motor thermistor resistance. It should read approximately 10k ohms at room temperature (70°F). Use a multimeter to measure resistance across the thermistor terminals.
4

Inspect the wiring harness and motor connector for loose connections or damaged wires.
5

Check the line voltage at the outlet. Use a multimeter to ensure you have 120V AC.
6

If the motor appears damaged or the thermistor is faulty, replace the motor assembly.
7

If all checks pass, the motor control board (MCU) may be faulty and require replacement.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. High voltage is present even when the appliance is turned off. Use proper Lock Out/Tag Out (LOTO) procedures to ensure safety.

Prevention:

Avoid overloading the washer. Regularly inspect and clean the tub and pump filter to prevent obstructions. Check the drain hose for kinks or clogs.

Expert Tip:

Enter service mode by pressing and holding the Start/Pause button while simultaneously pressing the Power button. Cycle through the diagnostic tests to further pinpoint the fault.

Frequently Asked Questions

•What is the proper resistance range for the motor thermistor at different temperatures?

The thermistor resistance varies with temperature. Generally, it's around 10k ohms at 70°F. Consult the service manual for the precise resistance-temperature chart for your specific GE washer model. A significantly different reading indicates a faulty thermistor.

•How do I test the motor windings for shorts or opens?

Use a multimeter to check the resistance between the motor windings. A shorted winding will have very low resistance (near zero ohms), while an open winding will have infinite resistance. Consult the wiring diagram to identify the correct winding terminals.

•Where is the motor control board (MCU) located, and how do I replace it?

The MCU is typically located behind the control panel. To access it, you'll need to remove the top or front panel of the washer (refer to the service manual for your specific model). Disconnect the wiring harnesses from the MCU, then remove the mounting screws. Install the new MCU and reconnect the wiring harnesses, ensuring they are securely attached.

GE Washer Error Code E49: Motor Overheat Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the proper resistance range for the motor thermistor at different temperatures?

•How do I test the motor windings for shorts or opens?

•Where is the motor control board (MCU) located, and how do I replace it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: