My core has been running fine for about a year. I don’t believe the code nor anything on the hardware side has been changed in many months but it’s started flashing cyan out of the blue lately. Technically there is a brief flash of red in between long periods of flashing cyan. It happened for the first time 2 days ago and the second time just now after running fine about 24 hours. Each time time the only way to resolve the issue is to press the reset button.