Question about Carrier BCA101R Air Conditioner

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My air conditioner expels black fuzzy pieces of a dust like stuff. It is only noticed after it has been on, laying in the general area.What is it? And how do i get ride of it. We have a Major Highway behind our house.

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Hi and welcome to FixYa. I am Kelly. Using the model number BCA101R this is a through the wall Air Conditioner. With long term use Air Conditioners build up dirt on the blower fan even IF you clean the filter on a regular basis. The particulate that builds up on the blower wheel is very fine. If you look closely at the particulate it appears black but most of the time is a very dark brown. That is dirt build up that is loose on the blower wheel and passes freely out the louvers when it comes loose from the blower wheel. When an Air Conditoner is on for long periods day after day there should be a routine maintenance cleaning schedule for the unit. Light use you can get by with cleaning it every 6 to 9 months. With heavy use you will have to clean it every 90 - 120 days. Cleaning involves removing the blower motor and power washing the evaporator and condenser coils along with the blower wheel and the rear fan blades. Anytime a power washer is used it is VERY important never to spray pressurized water at an angle other than straight on as it will bend the fins of the coils. Once the fins are bent straightening the coil fins can be a major hassle. This cleaning can be done by the home owner but.... the home owner must be able to follow electrical safety precautions by making sure the unit is not powered and that the run capacitor has been safely discharged. The control panel must also be disconnected and removed to perform proper cleaning.

Thanks for using FixYa.

Kelly

Posted on Jul 13, 2010

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