GE Washer Error Code 364

Error code 364 on a GE washer indicates an Air Outlet Temperature Sensor Fault, specifically the NTC 4 thermistor in the heat pump system. The sensor is reporting a temperature reading that falls outside the acceptable operating range. This can be caused by a defective sensor, a wiring problem, or an issue within the heat pump assembly itself.

It is not recommended to continue using the washer while code 364 is active. The control board flags this fault to prevent operation under abnormal temperature conditions, which could damage the heat pump or other internal components. Continuing to run the machine while ignoring this fault may lead to more extensive and costly repairs.

A power reset may temporarily clear code 364, but if the underlying fault with the NTC 4 sensor or heat pump system is not corrected, the code will return. Resetting the machine without addressing the cause does not fix the problem and could mask a developing issue. Proper diagnosis using Service Mode test 15 is the correct approach before assuming the fault has been resolved.

Some causes of code 364, such as a loose wiring connector, can be addressed by a knowledgeable DIYer after unplugging the machine and carefully inspecting the connector at the NTC 4 sensor. However, diagnosing the fault accurately requires running Service Mode test 15 to read live thermistor values, which involves navigating the service menu. Replacing the thermistor or addressing a heat pump system problem may require professional service.

Repair costs depend on the root cause. A replacement NTC thermistor typically costs between $15 and $50 for the part alone. If professional labor is required, total repair costs including diagnosis and labor can range from $100 to $300 or more. A heat pump system issue would generally fall at the higher end of that range.