Is the pan with the water the back up collection tray? Have you had several days of high temperatures and humidity?

I suspect the PVC drain pipe may have a clog and is not draining properly. Is the a trap which can be cleaned? Is there an opening you can pour water into to determine it is draining properly?

You need to take care of this or you are eventually going to have an overflow problem.

It is the back up collection tray. I ran water through the PVC and it's running through fine. Actually the past week has been in the low 80's with low to mid humidity but before that is has been hot and humid...I dunno how long the water has been there. I sucked the water up and I'm going to keep and eye on connections and when it starts to fill up again. I suspected it could be the pvc clog too but other than that, I don't know.