Classic 150 anomally

[homeskillet]

1 of my 4 Midnight Solar Classic 150 Charge Controllers is acting in a way that i have never seen. My system uses 4 CC's that are 8 years old and I have never had ANY issue with them. Presently 1 of them has 3 lights blinking on the circuit card and on the side of the display every few seconds. Also, the fan starts up for a few seconds while the lights are flashing and I get a GOT COMMS message flashes at the same time message. Has anyone seen this? I appreciate all the help i can get.

[ClassicCrazy]

Did you try doing a factory VMM restore  ?
details how to do that here for both button push method and jumper method
https://www.midnitesolar.com/firmwareReport.php?firmware_ID=19&firmwareProduct_ID=1&act=edit
Are your Classics in Follow Me mode ?
Larry