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Thread: Need help on accessing drain pan

  1. #1
    DIY Junior Member
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    Dec 2009
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    VA
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    Default Need help on accessing drain pan

    Okay, we have a musty smell coming from our a/c unit. From what I've read, it could be water collecting in the drain pan or the growth in condensate line. I did the easy thing first and checked the condensate line. No sign of a blockage. I added a cup of bleach followed by 2 cups of water. I was hoping this would help wth the smell. It hasn't. The other thing I was told to check was the drain pan. My question is how do I access it. I've attached a pic of my unit. Yes, the filter size is too big. I can't seem to find the right size at any local store, so I decided to put a bigger one rather than a smaller one. Anyway, back to the point.... The furnace is on top, the air handler in the middle, and blower on the bottom. I see some screws for the panel for the air handler, but can I remove it due to the fact that the refrigrant lines and condensate lines are attached? Or do I remove the furnace panel and look down? Even if I do that, will I be able to see the drain pain. I removed the filter and looked up. I could see the coils, but that was about it. I tried to see if I could find a manual or something for this particular air handler, but nothing came up. Its 10+ years old. Or is this better left to a professional.
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  2. #2
    Plumber jimbo's Avatar
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    Aug 2004
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    Default

    What is the brand name and model number of the air handler.

  3. #3
    DIY Junior Member
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    Dec 2009
    Location
    VA
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    Default

    It is a U.S. A/C product, model USM330AP, PART NO. 813330AP. When I googled the model number, it directed me to First Co. I did a quick search and all it tells me is to maintain the drain pan, but not how to access it.
    Last edited by ineedhelp; 09-23-2010 at 07:59 PM.

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