I having a problem with my is 250 I recently repair the touch screen becouse didn't work but now is being fix I put it back myself and everything works but when I push the climate button shows at message on the screen "Check the connection to the air conditioner " and the ac don't work ! Please can somebody tell me what to do!!

 

You might need to remove the unit again and double-check that you reconnected everything properly and tight.

 

I believe there are 2 plugs that look the same and can be swapped. Make sure they didn't get crossed.