This may be
impossible to answer without seeing first hand, but I'll give it a try. I
recently moved into a home that has central air. It's a pretty old unit (circa
1983?), up on the rooftop. BDP (Carrier) model 585CJ030050. Yes, it is old and
needs to be replaced, but let's put that aside for now. I know the filter must
be due for cleaning and/or changing. But I can't find the filter! First I
checked the intake -- the only large vented opening inside the house. I removed the vent
cover, and it's just big empty space... no place for a filter, nothing! So I
went up on the roof, looking to see if the filter was in the rooftop unit. Nope.
Every side panel seems permanently bolted on, and I couldn't find anything that
moved or lifted out of the way. Am I missing something obvious? I'd hate to pay
for a service call just to locate the filter, but I'm almost to that
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Re: Where is my a/c filter?
If your rooftop unit is self contained with no pipes leaving it except the condensate drain line there should be a narrow removable panel to access where the filters are located. If you have three pipes exiting the roof top unit two will go to an air handler located in the attic of the home. The filters will be located in the air handler.
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I'm pretty sure those work just like the AC unit in a home or car/truck/SUV. If they are low on Freon the cooling unit (compressor) will not engage...so the air that it IS blowing is just recirculated air (the air from the room). Try looking for a HVAC company in your air...see if they can give you a (free) estimate. If it's not the Freon, then it's possible it could be the compressor is bad. Good luck! Jason
If the filter looks like metal mesh, you can clean it in a tub of soapy water. If it looks like cotton, you'll need to get a new one. You can pick one up at Home Depot et al. Either bring in the old one or get the measurements of it to give to the salespeople.
to me it sounds like filter are dirty, need to be cleaned or replaced,
home systems, packaged or otherwise are hermetically sealed and should
not need freon recharge. Always start with airflow and/or unit being set
too low. An AC unit of any type will build ice if a) the filter is
plugged up and can't move enough air, b) it has been run without the
filter, clogging the coil, again, not moving enough air, c) setting an
AC unit below 68 degrees F will almost ALWAYS cause icing, and d)
running a standard AC when it's warm inside and cold outside (unless
equipped for "low-ambient operation"). When in doubt, a bit of
maintenance(thorough cleaning) by someone with AC skills can cure a b,
common sense will cure c d.
Without knowing more information here are some quick checks. First check the return vent and filter to see if it is blocked or clogged as well as the vents to see if they are open as well. I have seen filters in two locations in one home.
Second, if your thermostat has a "FAN" setting, then try this and see if anything happens. If not then several things control the fan itself. The fan relay, and the limits inside the unit.
The fan should turn freely by hand WITH ALL POWER OFF TO UNIT FROM ALL SOURCES. If it is hot then chances are it has failed, If it is cool but turns freely by hand then I would suggest replacing the capacitor first if there are no obvious broken wires or such. Discharge cap to chassis and replace only with exact microfarad (MFD) ane equal or higher voltage.
For a competent expert to be able to answer your problem, you will need to givea specific make and model of your unit. Also include as much as possible about what you have already tried to do toresolve the problem along with exactly what is not working or what the unit isnot doing that it is supposed to do. This will help us experts to be able to give you the correct advise the firsttime, without having to guess so much as to what is actually happening.
Hi, Without knowing what was there and what you are trying to install exactly it is impossible to give a definite answer... My feeling that you are replacing a single speed motor with a multispeed motor and that the wires are just extra speeds... if so hook up the black wire, white, and browns,and tape of the other colored wires... heatman101
There are so many different types of units that it is really hard to answer this question. If you have the manual it may help. The filter can probably be removed without taking the face plate off. The filter may be all that needs cleaned. It usually slides up out of the face plate. Clean it with soap and water and replace it. The face plate its self may have some screws holding it on. Many of them just come off after removing the screws. Others pop off from the bottom first, some from the top. If this is a unit still being sold, You could go to the store and have someone there show you how to take it off. Home Depot usually have some helpful people that may just show you how a few of them come off. That may help you to understand more about what you need to do to get it off. You could ask a friend, relative or neighbor to give you a hand. Usually two minds work better than one on such maters. I hope I have helped you.