Originally Posted by Asrabbit
You might want to check the gasket and make sure it is tight. You do not want to over tighten it, but it needs to be snug. These get loose over time. Take the cover off and you will see 4 bolts, one in each corner. Check and make sure they are tight.
Must be a 2014 thing. My 2104S had the same AC and same issue when the humidity was high. Found two problems. First, the drains on top were somewhat restricted / plugged. That allowed water to pool around the AC unit and not run off. Second, the opening in the roof was cut slightly too much on one corner allowing water to seep in.
It was really only noticeable when the AC shut off. Looks as if the fan on top was keeping the water away from the opening until it shut off. At that point, water rushed up against the AC until it drained some.
I pulled the inside cover, slightly tightened the bolts on that corner and opened up the drains a little. Traded it in right after that and never did see if it fixed the issue or not. It only happened on two trips though in 2.5 years, both when it was extremely humid.