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Leaking AC condensate drain pan - Heating & Cooling

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  • Anonymous Nov 22, 2008

    I have a property service business and we're seeing a lot of cracked pans on the FV4BNF006000AAAA, FV4BNB006000AAAA, and FV4BNF005000AAA models. These have been installed by several different qualified contractors in multi-million dollar home.

    Is this a larger scale problem?



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Ok need a pan tool were can i find one

Posted on Aug 24, 2008


That's not the problem. It has a 1" crack in bottom of the thin plastic drain pan. I need to figure out how to seal that crack. Replacing the drain pan would be a major project, due to it's attic location and it sits in the drain pan.

Posted on Jul 06, 2008

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Check the drain line for possible plugged trap. Blow back through it in some way to try to clear it.

Posted on Jul 06, 2008

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Posted on Jan 02, 2017

SOURCE: Condensation leaks out front of unit into the house.

Hi, no don't drill holes in bottom tray, to make drain, that's design, you need to keep water there, the fan usually pick up water(moisture) and add to your air inside your home, otherwise the air in your home will become to dry, dry air will create static electricity all over your home, from your carpet to your clothes, you need to level your unit horizontally, put a spirit level, and you should have a slight pitch, from front to back, good luck.

Posted on Aug 04, 2009

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SOURCE: Duo Therm 1500 AC leaking water inside RV after

On your cold side air coming in, does the ductwork have any insulation on it? Also The evaporator (front part, up where your filter is ) may have a plugged drain tube, depending on year make & model. Not uncommon for some to have a cracked drain pan as well. Your best bet may be to pull plastic cover off unit, then look on side of evaporator housing & see if you notice a tube sticking out side for drainage. It may be plugged if there is one there, use a piece of coated wire or similar and try cleaning it ou, carefully, don't ram it in there and hit coils too hard.. You can remove the 5/16" head screws that hold cover over evaporator, and pull that cover forward & have a look as well.

Posted on Aug 13, 2009

  • 141 Answers

SOURCE: my condensate drain pan is cracked inside the air ...

If water was in it in the winter it could have froze.
If your pan has a heating element in it, and it didn't turn off. It could have the same effect as being in the Arizona sun. Or just old age.

Posted on May 19, 2010

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1 Answer

Furnace is leaking water

This is not a lot to go on.

I assume since you called it a furnace, you have hot air heat and central air conditioning. If so, the only way a furnace/AC unit can generate water is by condensing moisture from the air. This is common to all air conditioning and removes humidity from your home. If so, this water, called condensate, must drain. The condensate is collected at the AC cooling coil that is typically located on top of a vertical upflow furnace or downstream of a horizontal furnace. If the drain is clogged, it will overflow and create a mess in and around the furnace. If this is your problem, cleaning and clearing debris may solve the issue. I suggest starting with the easiest accessable part of the drain path. You may need to open the panels enclosing the AC coil and clean the small pans at the bottom of the coil and clear openings from above that look similar to a laundry tub drain. If you get that far and find rust holes in the pan, repairs are needed. If you have an electric condensate pump that may also be the cuprit and require cleaning. Check and clear all drain lines from the coil connection to the final dicharge - sump pit or outside.

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