Solar Startup Issues

The solar system got finished but on one of the first days something went wrong and in spite of the various sensors and pumps the circulator pump stopped working. Temperatures at the top of the collector reached nearly 350 degrees. So Ken put tarps up to shade it until the plumber could come and fix it. It's mostly working now, we still have some sort of air bubble or other problem if it gets too hot too fast and we are not using the heat because the storage tanks are full. Seems to go right through the emergency shutoff settings before the pumps have a chance to turn on and circulate it to the heat dump outside so we're still working on it.