Troubleshooting a variable frequency drive (VFD) is crucial for ensuring the reliability and safety of industrial equipment. By effectively diagnosing and addressing issues within the VFD, you can prevent downtime, reduce maintenance costs, and extend the lifespan of critical machinery. In this comprehensive guide, we will walk you through the essential steps of troubleshooting a VFD using a multimeter. This process allows you to assess the condition of key components such as the rectifier and inverter circuits before powering on the device.