Christie Hunter on May 25, 2022 at 5:07 pm Whenever I get a source error like that, the first thing I do is check my gas supplies. Make sure you have enough pressure on the Air supply for running the source exhaust. If that air supply looks fine, then you probably want to reach out to the SCIEX technical support team (https://sciex.com/support/request-support) and they will be able to view the system with you and hopefully find the source of the the problem! Log in to Reply