Nope - live in UK, so only use aircon in hottest days. Kept out of direct sunlight, display only. Its bizarre - ninjago city fir example is still in mint condition next to it.
I find lego are great - I sent pictures and box number and they have sent replacements for all plus extra. It maybe helps that I bought from them the set directly, so they'd have even more of a record I'm a genuine buyer? Plus, while I don't pretend do be near their number 1 customer but I spend wayyyyy to much on lego lol