What are the potential causes of error code 702 and how can they be resolved?

Error code 702 often signals a problem with the system's compressor. This can be caused by a failing compressor, a refrigerant leak leading to low refrigerant, or a problem with the compressor's electrical components. Troubleshooting requires checking the compressor's electrical connections, verifying the refrigerant charge, and potentially testing the compressor's windings. Replacing a compressor is a complex and costly repair, often requiring professional assistance.