GE Washer Error Code E51: Voltage Fluctuation... | appliancefaults.com

Technical Background:

The E51 error code on a GE washer indicates that the main control unit (MCU) has detected a fluctuation in the incoming power supply voltage. The MCU monitors the voltage and triggers this error if it falls outside of a pre-determined acceptable range. Voltage paths from the outlet, through the power cord, to the MCU must be stable.

Symptoms:

The GE washer displays an E51 error code on the control panel and may stop mid-cycle or fail to start. The lights on the control panel may flicker.

Possible Causes:

Unstable or low voltage from the wall outlet
Loose wiring connections in the washer's power circuit
Faulty main control board (MCU)
Power cord damage
Tripped breaker at the breaker panel
Overloaded circuit (too many appliances on the same circuit)

Solution:

1

Unplug the washer from the wall outlet.
2

Check the voltage at the wall outlet using a multimeter. It should read approximately 120V AC.
3

Turn off the breaker at the breaker panel that supplies power to the washer.
4

Inspect the power cord for any signs of damage (cuts, frays, burns). Replace if damaged.
5

Open the washer's control panel and inspect all wiring connections to the main control board for looseness or corrosion. Tighten or clean as needed. A 1/4-inch nut driver and 5/16-inch socket are typically required.
6

Using a wiring diagram, check the voltage at the input terminals of the main control board. It should match the incoming voltage (approx. 120V AC).
7

If the voltage is correct at the board, the main control board (MCU) may be faulty and require replacement.

Safety Warning:

Disconnect power to the appliance before performing any diagnostic or repair procedures. Lock Out/Tag Out (LOTO) procedures should be followed. High voltage is present in the appliance; exercise caution.

Prevention:

Avoid overloading the electrical circuit. Ensure that the washer is plugged into a dedicated outlet. Periodically inspect the power cord for damage and the outlet for signs of wear.

Expert Tip:

Some GE washers have a service mode that allows you to view the actual voltage readings detected by the MCU. Consult the service manual for your specific model for instructions on how to enter service mode. Typically, this involves pressing a specific sequence of buttons on the control panel.

Frequently Asked Questions

•What is the acceptable voltage range for the wall outlet?

The acceptable voltage range for a standard 120V AC wall outlet is typically between 108V and 132V. Consult your local electrical code for specific requirements.

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

The location of the main control board varies by model. Typically, it's located behind the control panel or within the base of the washer. You may need to remove screws or clips to access it. Consult the service manual for your specific model.

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

You can find replacement main control boards at appliance parts retailers online or at local appliance parts stores. Be sure to have your washer's model number handy to ensure you get the correct part.

GE Washer Error Code E51: Voltage Fluctuation Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the acceptable voltage range for the wall outlet?

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

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

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: