GE Washer Error Code 318

Error code 318 on a GE washer means the compressor motor inverter board has detected and reported a fault. The inverter board controls the compressor motor by converting power into the correct form for motor operation. The code can result from incorrect supply voltage, a bad connection at the board, a failed inverter board, or a faulty compressor motor. Diagnostic work should begin by verifying the voltage at connector CN8, pin 4 to pin 1, which should read between 102 and 132 VAC.

It is not recommended to continue running the washer while error code 318 is active. The fault indicates a problem with the compressor motor inverter system, and operating the appliance with a known electrical fault could cause additional component damage or create a safety risk. The washer should be inspected and repaired before returning it to regular use.

A reset may temporarily clear the code, but if the underlying fault condition still exists, the code will return once the machine attempts to operate the compressor motor again. Resetting without addressing the root cause, whether it is a voltage issue, a bad connector, or a failed component, will not resolve the problem. A proper diagnostic is needed to determine why the inverter board is reporting a fault.

Some causes of error code 318 can be addressed without professional help, such as checking and reseating the connector at CN8 or verifying that your home's electrical supply voltage is within range. However, testing inverter board input voltage and inspecting motor windings requires a multimeter and comfort working around live electrical components. If those checks point to a failed inverter board or compressor motor, replacement is best handled by a qualified technician.

Repair costs depend on the root cause. If the issue is a loose connector or wiring problem, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the compressor motor inverter board requires replacement, parts and labor together can range from $200 to $450 or more depending on the specific model and local labor rates. A compressor motor replacement would generally fall at the higher end of repair costs.