3. If clicking on a "Bad comms" warning button does not fix the problem, the SiTech software will need to be stopped and restarted. It is vital that all the SiTech GUIs are closed, and that they are reopened in the correct order, so follow [[#Starting SiTech software| this procedure.]]
4. The most common issue is '''loss of dome comms'''. There is a watchdog on the dome that causes it to close after five minutes of bad comms - sometimes the warning message does not appear before the dome automatically closes. After following fixing the problem with step 2 above (then or step 3 if step 2 doesn't help), take control of the dome (click "Remote Control" in the SiTech Dome GUI, or "Take Control" on the browser TCS Advanced tab), and make sure the dome is open and tracking the telescope ("Follow scope" on SiTech, or "Tracking" ON on the browser TCS Advanced tab).