GE Washer Error Code E43: Inverter Control Board... | appliancefaults.com

Technical Background:

The E43 error code indicates a communication fault between the main control board (MCU) and the inverter control board. The main control board sends signals to the inverter board to control the motor speed and direction. This communication typically occurs via a low-voltage serial communication link. A voltage interruption or fault in the circuit can trigger the E43.

Symptoms:

The washer displays an E43 error code on the control panel and may not start, or the motor may not run properly during a wash cycle. The washer may also intermittently stop during a cycle.

Possible Causes:

Loose wiring harness connections between the main control board and the inverter board.
Faulty inverter control board.
Defective main control board.
Damaged wiring harness.
Voltage fluctuations at the outlet supplying power to the washer.

Solution:

1

Disconnect power to the washer at the breaker panel.
2

Locate the inverter control board, typically near the motor, and the main control board.
3

Inspect all wiring harness connections between the two boards. Reseat any loose connections.
4

Use a multimeter to check the wiring harness for continuity. Repair any broken wires.
5

Restore power to the washer and monitor the voltage at the inverter board. You should see approximately 120V AC at the power input.
6

If the error persists, replace the inverter control board.
7

If the error still persists, replace the main control board.

Safety Warning:

Always disconnect power to the washer at the breaker panel before performing any repairs. High voltage is present in the control circuits. Lockout/Tagout (LOTO) procedures should be followed.

Prevention:

Periodically inspect the wiring harness connections for any signs of damage or looseness. Ensure the washer is plugged into a dedicated outlet to prevent voltage fluctuations. Consider using a surge protector.

Expert Tip:

Some GE washers have a service mode. Entering service mode allows you to run diagnostic tests and view error history. To enter service mode, consult the tech sheet located inside the washer cabinet, usually near the control panel. Typically involves pressing a sequence of buttons on the control panel.

Frequently Asked Questions

•How do I access the inverter control board?

The inverter control board is typically located near the motor at the bottom of the washer. You may need to remove the front or rear panel of the washer to access it. Consult the service manual for specific instructions for your model.

•What voltage should I expect to see on the communication wires between the boards?

The communication wires typically carry a low-voltage DC signal, often around 5V DC. Check the wiring diagram for the specific voltage levels for your model.

•Where can I find replacement control boards?

Replacement control boards can be purchased from appliance parts retailers online or from local appliance parts suppliers. Make sure to order the correct part number for your specific model of washer.

GE Washer Error Code E43: Inverter Control Board Communication Fault Repair Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the inverter control board?

•What voltage should I expect to see on the communication wires between the boards?

•Where can I find replacement control boards?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: