How does the obvs work. It has real sense installed also? On this occasion, I will admit, I was draining the batteries for storage, but it does it a lot in the field.
I have seen that a lot after switching between different saved models and in that case it indicates that the controller needs to be re-bound to the H. When I have got this warning I have also not been receiving telemetry back from the H (no battery voltage, GPS status, etc). Go into advanced settings --> Binding menu and see if shows you are bound to the Typhoon H.
I have seen that a few times from the very beginning on both of mine. Sometimes it is from when I forget to put it back into single mode from team mode, other times if the obs avoid switch is in the on position it will give a failure, other times its just random and I restart the aircraft. It doesn't seem to affect anything once it goes away and it has never happened in flight (knock on wood.)
Reading and learning from a 2 year old post is great, but posting to it brings it back to the top of the heap and unless you look at the dates of the post most think it a recent topic.
I’ve caught myself posting a reply to an OP that hasn’t been active for two years because someone posts to the thread. I then delete the post I started because it has no relevance after that length of time other than as a reference for knowledge.