Hi Mr. Amazing,
to All Things Plants!
Money Tree (Pachira aquatica) is a tree that likes water. In it's natural habitat it is a wetland area tree sometimes growing along the waters edge.
https://en.wikipedia.org/wiki/... and when grown as a houseplant it needs consistent moisture but good drainage. The leaf issue with your plant could very well be from lengthy, intense sun exposure but to my eyes the leaves look chlorotic rather than sunburned. Chlorosis can have a few causes as listed here:
https://en.wikipedia.org/wiki/... More images of chlorotic leaves can be seen here:
http://www.bing.com/images/sea...
If the problems with the plants leaves happened suddenly I doubt it is due to Chlorosis so sunburn is possibly the culprit. I agree with what Dr. Dawg/Ken suggested, the plant should be moved away from any vent that blows air (hot or cold) which will can cause the plants soil to dry very quickly. Misting daily will help raise humidity levels and the tree should sprout new leaves before long.
