GE Washer Error Code 303

Error code 303 on a GE washer indicates a Compressor Motor Inverter Fault. The inverter board that controls and powers the compressor motor has reported an internal fault condition. This stops machine operation to prevent further component damage. Diagnosis begins by checking line voltage at connector CN8, pins 4 to 1, for a reading between 102 and 132 VAC.

You should not continue using the washer while error code 303 is active. The fault indicates a problem with the inverter board that drives the compressor motor, and operating the machine under this condition could cause additional component damage or create an electrical hazard. Discontinue use until the fault has been diagnosed and resolved.

A power reset may temporarily clear the 303 code, but if the underlying fault condition still exists, the code will return once the machine attempts to operate the compressor motor again. Resetting should be used as a diagnostic step to see if the fault was a one-time event, not as a permanent fix. A thorough diagnosis of the line voltage and inverter board is needed to resolve the issue.

Some causes of the 303 code are accessible to a knowledgeable DIYer, such as inspecting and reseating connector CN8 or checking the outlet voltage with a multimeter. However, replacing the compressor motor inverter board or diagnosing motor winding faults requires comfort working with AC voltage and electronic components. If you are not experienced with appliance electrical systems, a qualified technician is recommended.

Repair costs vary depending on the root cause. If the issue is simply low line voltage or a loose connector, costs may be limited to a service call fee, typically in the range of $75 to $150. If the inverter board itself needs replacement, parts and labor combined can range from $200 to $450 or more depending on your location and the specific model.