A/C leaking in under condenser

[Irestone]

I have an Amana furnace which is about 12 years old. I have and A/C unit which is about the same age. 2 years ago I had a guy drain the freon, move the A/C unit, and connect new pipes running back to the air moving unit when I was building a deck and needed the A/C unit in a different place. Last summer toward the end of the year I noticed that water was leaking out of the air main duct area. There is a drain connected to the unit which is 1/2" PVC that a plastic drain tube is connected to. This tube drains into the basement floor drain. I replaced that tube in the hopes that the issue was a blockage in the drain tube, but that didn't seem to have any effect.

Now when I run the Air Conditioner the basement floor gets wet when the unit leaks, but there is a little trickle of water which does drain out of the drain tube. I'm wondering if I'm missing some kind of drain pan which funnels the waste water into the drain tube or something. How do I verify something like this? When I take one of the side panels off the main air delivery section above the main furnace area I can see the condenser (I hope I'm referring to it with the correct name....I'm talking about the radiator-looking thing that the air is forced past to cool it), but can't quite see any drainage pan or anything. Here's a picture of what I'm talking about:
http://www.irestone.com/HVAC/WaterLeak.jpg

Any help is much appreciated!

[Ed Imeduc]

Looks to me like the water is comeing from the small liquid line on the case. can you be low on freon? Is the big copper line cold and wet out side by the condenser coil and unit. Most of the time you call the indoor coil the A coilor or evaporator-coil. You filter clean inside coil clean?

ED ;)

[Irestone]

I would doubt I'm low on freon as the guy who moved it a couple of years ago "completely recharged the freon". I guess anything's possible though. So, I may be out of freon, but I would lean towards doubting it.

OK, so the coil piece inside the air moving unit above the furnace is the "A-Coiler" or "Evaporator Coil"? Sounds good. That unit looks clean. I opened up a side of the duct to take a peek and the coil looks very clean in there.

I haven't had a chance to check if the big copper line is cold and wet outside, but will take note of that as soon as it's hot enough to turn the A/C back on. Thanks for your advice, I'll keep you posted on what I find!

[mattison]

Try useing a wet vac and sucking the drain line real good. You could have gunk built up inside the drain pan causing it to overflow. Also inspect the pan itself if you can, they will sometimes crack or if metal get rust holes in them.

[Jay11J]

When you checked the coil, did you see frost/ice on it?

and did you check the drain pan on the coil to see if it was clear at the drain outlet area?

[Irestone]

When I opened up the side of the duct to look at the coil there was no frost on it, but I couldn't get a good look at the pan (assuming the pan is directly below the coil). My coil is shaped like an "A" or a tent and I would assume the pan would be directly below the coil structure. I didn't see anything that looked like it was designed to collect condensation and funnel it toward the drain pipe. I'll try to use a wet/dry vac to ensure the drain line is clear and will take another look inside the ducting to locate the drain pan. I'll try and take pictures to better show what I'm dealing with. Thanks for all of your continued help!

[Irestone]

Thanks for everyone's help. It looks like my drain pan is a little rusty in places, but seems to be OK. I shop-vac'd the drain line and a lot of blockage came out. I have been running the A/C for a few hours now with no condensation. I think you helped me find the problem. Thanks again...