I have the simple.tv dual-tuner version (which I love) and for months, I saw the primary light blinking red 3 times over and over again. I searched all over the internet but couldn’t find anything about it. I was afraid of rebooting the machine since it was working well – I didn’t want to screw it up if something was indeed wrong. After contacting support, they came back with this:
#define ERROR_NO_WAN "red-fast 3"
#define ERROR_NO_DNS "red-fast 3"
So, the box was just having issues getting DNS or something. After a reboot, the machine came back up fine. I figured that since there was no mention of this on their site or anywhere on the internet, I’d make a blog post in case anyone else has the same issue.