After 4 years of use today I've got the same red blink and sound beeps, the aircraft was on the table at home and I was able to start and stop the motors. Power cycle of the RC and drone didn't helped. Power off and wait for about 3-4 min and all is back to normal. I went to the stiks callibration and all where perfect. Very strange indeed and if it is related to stick callibration why it was resolved only with a bit of cool down? Does anyone knows what the controller does when it overheat?
I found in the user manual that slow red light blink and 3 beeps mean controller error (Slow Blinking Red D-D-D...... Remote controller error.) In my case it is D-D-D-D for ever but no description about that in the manual. Also in djigo warnings there is a warning "Altitude is above 3,000m (9,842ft). Please be aware that the power system may be affected". The drone and controller was at home sitting on the table but powered on for about an hour. I was doing some RF measurements.
Does somebody knows something new related to this error code?