Mitsubishi mini split troubleshoot inverter board 

Thanks for the video, informative.

Hello, when you replaced the board did it work?

"jumpered with a jumper.." lol.

hello what is the type of signal that is getting out from the mother board of the vrf or inverter air conditioning to the inverter electronic card the type of signal from the mother board to toward inverter card responsible for increasing and decreasing the output frequency toward compressor

Those have a self diagnoses on the remote. I wonder how many know about it.

Bad sound recording on video

Did u jump s1 to s3 from the in-door tb?

have problem whith my mine split ac gets to hot shuts of to quick then stars agen

Yes

I have no power at all to my unit out side it was running fine and shut down

Anyone know what it could be?

Very bad sound quality