GE Profile Washer Error Code 71: Inverter Motor Failure... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) sends signals to the inverter board, which then controls the speed and direction of the inverter motor. error code 71 indicates that the MCU has detected a fault in the inverter motor circuit, typically related to voltage or current fluctuations outside of the programmed parameters. The voltage path includes 120V AC to the inverter board, DC voltage generated by the inverter, and feedback signals sent back to the MCU.

Symptoms:

The homeowner reports the GE Profile washer displays error code 71 and the motor does not run or spins intermittently during the wash cycle. The washer may hum or make clicking noises but fails to agitate or spin.

Possible Causes:

Inverter motor failure
Wiring harness damage between the MCU and inverter board
Faulty MCU (Main Control Unit)
Overload causing the inverter to shut down
Loose connections at the motor or inverter board
Failed motor windings

Solution:

1

Unplug the washer from the 120V AC outlet. Disconnect power at the breaker panel.
2

Locate the inverter board, typically behind the rear access panel. Use a 1/4-inch nut driver to remove the panel screws.
3

Inspect the wiring harness connecting the MCU to the inverter board and the inverter board to the motor. Look for any signs of damage, such as frayed wires or loose connections. Repair or replace as needed.
4

Using a multimeter, check the voltage at the inverter board input. You should see approximately 120V AC. If not, troubleshoot the power supply to the board.
5

Disconnect the motor connector from the inverter board. Check the motor windings for continuity using a multimeter. If any windings are open or shorted, the motor needs to be replaced.
6

If the wiring and motor windings are good, replace the inverter board.
7

After replacing the inverter board or motor, plug the washer back in and run a test cycle to verify the repair.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. High voltage is present within the appliance, and failure to disconnect power can result in electric shock. Follow LOTO (Lockout/Tagout) procedures.

Prevention:

• Avoid overloading the washer with excessive laundry.
• Regularly inspect the wiring harness for damage.
• Ensure the washer is properly leveled to prevent excessive vibration.

Expert Tip:

After replacing the inverter or motor, run the washer through a calibration cycle. This is accessed through the service mode. To enter service mode, simultaneously press and hold the Start/Pause and Temp buttons for 3 seconds. Then navigate to the calibration routine using the cycle selection knob.

Frequently Asked Questions

•How do I test the inverter motor windings with a multimeter?

Set your multimeter to the ohms setting. Disconnect the motor connector from the inverter board. Test the resistance between each pair of motor terminals. You should see a low resistance value (typically a few ohms) between each pair. An open circuit (infinite resistance) or a short circuit (0 ohms) indicates a faulty winding.

•Where can I find the wiring diagram for my GE Profile washer?

The wiring diagram is usually located inside the control panel or on the back of the washer. It is often folded and secured in a plastic pouch. You can also find it online by searching for the model number followed by "wiring diagram".

•What is the correct part number for the inverter board replacement?

The correct part number depends on the specific model number of your GE Profile washer. Refer to the parts breakdown for your specific model, or contact a parts supplier with your model number to obtain the correct part number. Be sure to verify the compatibility before ordering.

GE Profile Washer Error Code 71: Inverter Motor Failure Troubleshooting & Replacement

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the inverter motor windings with a multimeter?

•Where can I find the wiring diagram for my GE Profile washer?

•What is the correct part number for the inverter board replacement?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: