Question about Aprilaire 550 Humidifier

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The unit makes a water mess which seems the result

The unit makes a water mess which is the result of water passing right through the pad and splashing on the inside wall of the unit and then flowing freely down the inside of the unit and to the floor.. This is a new situation and I have had the unit for eight or nine years without any problem. The pad used is supplied by you specifically for a 550 model which , of course, is appropriate for my unit.The unit is connected to the warm air opening of the oil heated furnace. Thus its the warm air that goes through the pad and as soon as the pas is installed in its bracketand water is connected to the to the yellow plastic 90 degree fitting, and the water begins to filter through the pad I can observe water being blown right through in large drops and is not being somewhat vaporized as in the past. In addition to the pad, the plastic fitting, the bracket to hold the pad , the rest of the unit is solidly fixed to the side of the furnace.

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  • bertrand_roy Feb 05, 2010

    Slowing the water supply flow did not help. Consider that for eight years, I had no such problem . The quantity of water going down the pad has not changed over the years.
    The drain works properly and, while there is no damper or any other mechanism to control the airflow from the furnace, this did not cause a problem in the past.
    I am at a lost. This unit which has served me well is a very simple apparatus and yet all of a sudden we have this frustrating problem !

  • bertrand_roy Feb 05, 2010

    Thank you.

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  • Aprilaire Master
  • 2,461 Answers

Hi is the tube at the bottom blocked or can you turn the flow down going in

Posted on Feb 04, 2010

  • 1 more comment 
  • paulcarew Feb 05, 2010

    I take slowing the flow down through the pad made no change to the water going in to the unit ?

  • paulcarew Feb 05, 2010

    Hi trying to work this out will sorry that did not help will see what i can find

  • paulcarew Feb 05, 2010

    I googled this found there wed site they have a toll free number for help you can also down load manuals see if this helps

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