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water draining from collection pan turned black
September 4, 2013
10:48 am
New Member
Forum Posts: 1
Member Since:
September 4, 2013
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The exterior water drain flow from the main AC unit has been rust colored at times, but has lately turned almost black.  Might that be from some type of oil drip from the unit?  I occasionally put a few drops of bleach in the drip pan to prevent drain blockage.  Dark water doesn't have an oily feel to it.  Unit seems to be working fine.  Any ideas?