Multi stack chiller with turbo core compressors. We have a bearing fault on one of the compressors and are running through the troubleshooting sequence. When we measure voltage at HV+, +17HV, and +5v test points what is our reference point, is one lead supposed to go to a common or ground?

Posted by Deleted (a88d361b) at 2021-04-12 17:39:21 UTC