Thanks guys, for the responses.

I will get the dedicated 220V converted to 110V and use that to feed
the AC. If that doesn't solve the issue then I will persue to
warranty voiding issue. I'm not sure if the manual explicitly
mentions no wall mounting but I did find an FAQ on LG's repair site
that mentions this. I agree! If the manual doesn't state it then
there is a valid argument.

Thanks again.

Bob