Occasionally in the middle of a flight, my Tunigy 9XR will suddenly start rapidly beeping, making a similar sound to the idle alarm it makes if not used for 10 minutes. This will go on for 5 minutes or so and then it will stop. Nothing is indicated on the screen to show the reason of the alarm, and it's not low battery because every time it's been over 11 volts, and I have the low voltage alarm set at more like 10v.
Anybody have any idea what might be causing this? I have all other alarms turned off besides voltage and inactivity. This only happens maybe one out of 10 flights and appears totally randomly. It does not seem to affect the functionality of the radio at all. I usually just ignore it, but I'm always a little worried my radio might shut off and the plane drop out if the sky.
Anyone else experienced this?