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  1. #1
    Join Date
    Jun 2001
    Location
    DFW
    Posts
    683

    plugged condensate drain on mini-split

    Is there something safe to use, that will not hurt the aluminum fins on the indoor coil, that can be used for preventative maintenace to keep a condensate line from plugging? I would plan on using it when the system says the filter needs to be cleaned which is based on hours of operation.

    We woke up about 2:30 this morning to find that our four month old Fujitsu 18RLQ was dripping water on our hardwood floor - not a good thing.

    I got the line unplugged by disconnecting the drain line at the sink trap, putting in a short piece of flexible conduit that fit quite nicely into the end of the pipe, and blowing back through the line. I then flushed out the line from the top with about a half gallon of very warm water.

    Our house has been remarkably dust free, and when the Fujitsu says to clean the filter, there has been very little to clean. So, I suspect that the installation is less than optimal. Getting the contractor to change the installation from less than optimal to optimal doesn't seem likely.

    So, what can I do to keep it from happening again?

    Edited to add
    Another thought for maintenance- Would disconnecting the drain line at the trap and using a wet/dry vac to clean out the pipe about every two months be better than chemicals?

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,755
    Simple Green works.

    Add a small amount every filter cleaning.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Jun 2001
    Location
    DFW
    Posts
    683
    Quote Originally Posted by beenthere View Post
    Simple Green works.

    Add a small amount every filter cleaning.
    Thanks!

    Sounds like a very workable answer.

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