Aoa failure

[Alex-lloyd]

Hi, the aoa has stopped working. I’ve tried re calibrating , but no change. I’ve checked the pitot and aoa tubes from the dynon heated pitot back to the connections on the adahrs and they seem ok. Definitely no blockage and I think no leaks. The display shows one red chevron at the top of the aoa display and doesn’t appear to change.

Is this likely to be a adahars failure? Are there any diagnostics I can use to help identify the problem?

Thanks for any suggestions

 

[SkippyDiesel]

"Definitely no blockage ...."

Are you sure ?- use compressed air (with care) to blow clear.

".....no leaks."

Again - Are you sure? If you use a small 12V compressor/ with interrogated gauge, an insistent should be able to momentarily block the tube for you to see a immediate positive pressure rise. No rise or slow rise indication of a leak(s).