Drain pan water should be drained outside immediately. Check your drain pipe make sure they are not clogged.

"My problem is I am getting excess water coming out of PVC drain pipe on the outside of my house. "

It is a condensate drain, and will produce water as long s the AC s running and removing humidity from the house.

It is not "excess water" in any way, but the normal condensate of an AC system.

It is marginally aggressive water since it is cold distilled by the AC system.

It should be dripping on the ground, not running down any part of the house.

Standing water in a drain pan (especially one you can see) likely means the main drain for the pan inside the equipment is clogged.

A show vac with a wet rage to make a seal on the outside end of the drain should pull it clear.