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  1. #1
    Join Date
    Dec 2007
    Location
    morrison, illinois
    Posts
    111

    mini split water leak

    i am not a do it yourselfer for starters, i have a mini split that leaks water down the front of the coil and leaks out the front of the unit, i checked the drain line and it is open, coil is not freezing up, refrigerant charge is fine, filter is clean. i sprayed coil cleaner on coil and seemed to help for a day or two, i am at a loss as to why this leaks.any suggestions would be nice. if it makes a differance this unit is located in a subway restaurant.

  2. #2
    Join Date
    Jun 2008
    Location
    fort myers, florida
    Posts
    25
    one reason this may happen is that the coil is not level, which can be fixed temporarily by propping it up at an angle with a type of shim. What kind is it?

  3. #3
    Join Date
    Dec 2007
    Location
    morrison, illinois
    Posts
    111
    Quote Originally Posted by dwepproductions View Post
    one reason this may happen is that the coil is not level, which can be fixed temporarily by propping it up at an angle with a type of shim. What kind is it?
    comfort air, installed 2 years ago with no problems till now

  4. #4
    Join Date
    Jun 2008
    Location
    fort myers, florida
    Posts
    25
    Quote Originally Posted by workhc View Post
    comfort air, installed 2 years ago with no problems till now
    first thing I would do is make undoubtedly sure that drain line is clear...not sure what most use but I use bluestreak with the help of a vacuum to clean out drain lines, it breaks apart slime sludge, algae, dead frogs n stuff. If you have had it serviced professionally I would call them back and tell them the problem is not fixed.

    2 years you may still have a good warranty on it also never hurts to ask them.

  5. #5
    Join Date
    May 2010
    Location
    Santa Clarita, CA
    Posts
    54
    Quote Originally Posted by workhc View Post
    i am not a do it yourselfer for starters, i have a mini split that leaks water down the front of the coil and leaks out the front of the unit, i checked the drain line and it is open, coil is not freezing up, refrigerant charge is fine, filter is clean. i sprayed coil cleaner on coil and seemed to help for a day or two, i am at a loss as to why this leaks.any suggestions would be nice. if it makes a differance this unit is located in a subway restaurant.
    What kind. Did you rinse?

  6. #6
    Join Date
    Dec 2007
    Location
    morrison, illinois
    Posts
    111
    Quote Originally Posted by dwepproductions View Post
    first thing I would do is make undoubtedly sure that drain line is clear...not sure what most use but I use bluestreak with the help of a vacuum to clean out drain lines, it breaks apart slime sludge, algae, dead frogs n stuff. If you have had it serviced professionally I would call them back and tell them the problem is not fixed.

    2 years you may still have a good warranty on it also never hurts to ask them.
    i am in the business, i mostly do residential and lite commercial. i know the drain line is open because the drain line runs down the outside of the wall inside the building, i disconnected the hose from the drain pipe and water is flowing fine. do u think that shimming the bottom of the unit to prop the top up more to flow water to the back would help, i have only installed a handfull of these units, there just is not a big demand for them in my area.

  7. #7
    Join Date
    Nov 2001
    Location
    Seattle, WA
    Posts
    7,760
    You sure it's not condensation buildup from the refrigeration lines?
    "The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
    - Alexis de Toqueville, 1835

  8. #8
    I have the exact problem, it drains fine through the wall and out. but water drips inside.
    it appears that water droplets slide down from behind of the blower(fan).

    Any suggestion? just tilting?
    filter is clean, no freezing. it just drips.....

  9. #9
    Join Date
    Nov 2001
    Location
    Seattle, WA
    Posts
    7,760
    Quote Originally Posted by coolwanny View Post
    I have the exact problem, it drains fine through the wall and out. but water drips inside.
    it appears that water droplets slide down from behind of the blower(fan).

    Any suggestion? just tilting?
    filter is clean, no freezing. it just drips.....
    Read above suggestion.
    "The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
    - Alexis de Toqueville, 1835

  10. #10
    drain line is clear and drains well, the water droplets come from the behind of the linear fan, one by one. it's not that much, but it is enough to wet the floor.

    i opened the front cover to see if the pan is full of water, but it's not full either.
    Tilting the unit seems counter intuitive, since the water comes behind of the pan.

    thanks,

  11. #11
    Join Date
    Nov 2001
    Location
    Seattle, WA
    Posts
    7,760
    Most likely the refrigerant lines run across the unit in the back right below the drain pan. If any of the length of line is exposed to the rooms atmosphere there is a very good chance that condensate will build up on those refrigeration lines if they were not insulated properly.

    When the lines get condensate on them the condensate has no place to go except out of the bottom of the unit and onto the wall.
    "The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
    - Alexis de Toqueville, 1835

  12. #12
    DeltaT. thanks for your answer.
    First, it's one of two identical units, both are set on the wall in the same fashion (in a different room), but only one drips water.
    I see the refrigerant lines are against the wall(behind the plastic housing), but the water droplets coming from inside blower cavity behind of the fan), it's hard to explain.

    if I look up behind of the air guide vane, I can see blower spinning, and the water droplets coming from behind of the fan gliding the plastic wall.

  13. #13
    Join Date
    Nov 2001
    Location
    Seattle, WA
    Posts
    7,760
    Best bet is to have a technician take a look. It could be that the drain slope is just not allowing all the water to drain our. Or that the location of this particular unit is involved in way too much humidity from the air or from the refrigerant line hole. Either way you need someone who is familiar with it to take it apart and perhaps re-level or slope the system or repair the humidity input from the walls if that is the case.

    I'll bet if you only allow the fan to run at medium to high speed the drip will go away after a while.
    "The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
    - Alexis de Toqueville, 1835

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