Err31 code - any ideas?

I’m running a couple of year old 65mm aircooled spindle on my oneFinity Journeyman x50 - and have done reliably for sometime.

Today when I powered it up and ran a longer V Carve job, about 15mins in, my bit stopped spinning and started dragging - ultimately ruining the workpiece. I had error code Err31.

I hit stop, start - and it span for a bit before Err31 again.

I went through and confirmed all the cables are secure, and blew air through the controller to make sure it was dust free. Powered it off and on - and was still getting this - after the system ran for some time.

Without any changes I can tell - it stopped - and I was able to get some new wood, and run the job sucessfully.

So now I’m left without confidence in the system. Google tells me this could be a short in the wiring - but nothing is rubbing, no wires are exposed and nothing had changed from countless prior runs.

Any ideas?

Have you shot support an email at support@pwncnc.com ?

Have you been able to resolve the Err31 problem?