My Thermomix TM5 is having this error every now and then. 



C 161
Device switches off. Please confirm and restart.



After I click OK, the machine shuts down.
I can restart it immediately, but the same error appears if I try to operate/cook/mix something at once again.
It works fine again after it rests for about 10 minutes.

There is nothing about the error in our TM5 manual.
Anyone has this problem? Any official explanation about this?