I have the same display in my Force 37TS and I am pretty sure mine says the same thing when plugged into 50 amp. Never understood why, but it's not accurate. The 50amp service works just fine.
Never have plugged into 30 amp so can't say about that.
I put the 30A in my storage shed, did not realize we were going to do this at the time of the build... Seems to be running just fine on 30, actually sitting in it right now typing this .
I was just mainly wanting to make sure that it didn't do anything weird with power shedding, or couldn't due to it not knowing what it's plugged into.
I have the same display in my Force 37TS and I am pretty sure mine says the same thing when plugged into 50 amp. Never understood why, but it's not accurate. The 50amp service works just fine.
Never have plugged into 30 amp so can't say about that.