Wet carpet under system

Unfortunately, my experience with large areas of wet carpet requires the carpet and padding to be removed so the floor can completely dry out.
Padding most likely needs to be thrown out. Sometimes the carpet can be saved and other times its best to throughout and purchase new.
Regardless of what method you use, you are not going to dry out the carpet and floor without removing the carpet and padding.
I would not be more concerned with water damage to the floor, carpet, and components than electrical schock.

To bad that fan isn't going to stop the growth of mold because that carpet padding is never going to dry!