Wow, the 400 is exactly like the 200 in that, except in seasons! Super hot in the summer. All the tricks, none of them really worked. Only thing that sort of worked was going to cabset mode on the pressure controller and dialing in like 9,500 feet. The only reason that works is it delays your pressurization. The winter on the 200 it is either uncomfortably cold or nuclear hot. No real middle ground there, so they did make a little bit of an improvement. Best to just give the FA the temp control.

If they would just bite the bullet and make it a new type rating they could make a whole lot nicer in the 400, but too late now I guess.