I had the same problems with the door
, before. But it's happened to my R9 rig (we know that this series was prone to overheat). When my Mining room door's open, that rig was okay, but when closed, soon this rig will crash.
I add a few additional fans to this rig, and the problem was gone. But I'm not sure related to your issue, you have reasonable temps on your whole devices. Maybe you need to start troubleshooting with lowering your cards setting. Then also, do another analysis of what possible may causing this.