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What are the major reasons that my fan doesn't turn on on my central air conditioning unit?

The furnace is turned on--the fan inside works, but the fan on the outside unit isn't working. What might the problem be? We changed the fuses and tripped the power but still not working.

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Wire,fan motor or capacitor.If the compressor runs its prolly not the capacitor.If it doesnt,may also be the contactor.

Posted on Aug 20, 2008

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How to fix central air conditioning


HI.please you check thermostat and electrical fan.

Jul 16, 2014 | Carrier Air Conditioners

Tip

Central Air Conditioning or Window Air Conditioner


Many people look into installing air conditioning in their home every year. There are many options to consider when it comes time to make that decision. To help make that decision more clear, I will explore some of the positives and negatives of the two major options. Ductless Split A/C type units lately are also becoming more of a popular option. I will do another “Tips and Tricks” on that option. To include that in this one would just be more confusing. So for now we will just look at window air conditioners and central air conditioning.

Central air conditioning is usually the best way to go if you already have a central hot air heating system already installed in your house or building. The advantage that you have is that you already have the air handler or blower part already installed. The ductwork for the distribution of the air is also all ready in place. The ductwork may need some modification to make it work well for air conditioning, but the major part of it should be adequate. To use the existing furnace and ductwork an A/C coil will need to be installed at the furnace. An outdoor condenser unit will be installed outside and copper tubing will be used to connect the coil to the outdoor unit. Some electrical wiring will need to be done to power the outdoor unit. Low voltage wiring will also be needed to hookup the thermostat, the furnace, and the outdoor unit together so that they can talk to each other. Basically the thermostat will just tell the furnace to run the blower on high speed and the outdoor condenser to start up.
If there is no central hot air heating, then the installation of central air conditioning can be much more difficult. Many homes that do not have hot air heat also do not have the room to install ductwork. This would eliminate this possibility. If you are in this category you should get a professional to look at your situation to see if central air conditioning can be done. If it is the room available is to enough to do a good job and get large enough ductwork installed, then do not force the issue and go another option. Ductless split type air conditioning may be your best option.

A window air conditioner in my opinion is a last resort for air conditioning your house or building. There are many down sides to window air conditioning units. There are two good things that window air conditioners have going for them. They are very inexpensive when it comes to cost per BTU of cooling. They also install very quickly and easily. That is where the good part of them ends.

Window air conditioners are security risks. If a thief wants to get into your house, the thin sheet metal box that holds the unit in the window can easily be pulled apart to get in through the window. I have seen many units that are not even screwed fast. If the window air conditioner is just there, balancing in the window frame, it becomes very inviting for a unexpected guest. The window air conditioner is also very inefficient. These units use more power per BTU of cooling than any other type of air conditioner. If you are a light sleeper, than chances are you will not want one of these window shakers. Window air conditioners are one of the loudest forms of air conditioning.

The fan for these units is very loud when running. Then add the noise of the compressor and you have enough decibels to keep many people wide awake all night long. If you choose to use a window air conditioner, than you should also look for a place that it can be secured and placed in a room that you will not be sleeping in.


As you can tell by now, I am not a big fan of window air conditioners. They do have a place for some people. However, you do need to be aware of the problems that you may encounter with them. The low initial cost can be offset by the fact that they typically do not last as long as a central air conditioner.

Central air conditioning will last much longer, be quieter during operation, be more efficient, be more secure, but the initial cost will be higher. How much depends on each situation. When considering your options for air conditioning installation you need to get prices for everything and then decide what type of unit will work the best for you.


http://www.fixya.com/support/r3850183-condenser_coil_cleaning_condenser_coil

http://www.fixya.com/support/r3636751-air_conditioner_seer_seasonal_energy

http://www.fixya.com/support/r3636709-size_air_conditioner_need

http://www.fixya.com/support/r3633369-portable_air_conditioning_great_portable

http://www.fixya.com/support/r3623253-window_air_conditioners_clean_every_year

on Jan 01, 2010 | Air Conditioners

1 Answer

I've got a Air condition unit model BV124 30-10L16, which is the part of Lennox furnace unit. The indoor fan stops working now. The outside fan works fine. I checked the capacitor, fine too. Cooling...


Hello, a blower motor will not run for one of theese three reasons 1) No power to motor 2) bad capacitor 3) the motor itself is bad. One test you could do is take the wire of the L1 terminal on the control board and use a jumper wire and connect it to the wire on the high speed motor tap , if this gets the unit running then the control board must be replaced if it does not work then the motor is shot......make suremwhen disconnevting wires the power is off.

Sep 04, 2011 | Air Conditioners

1 Answer

I HAVE A CARRIER CENTRAL AIR, THE OUTSIDE FAN IS BLOWING INWARD AND WON'T SHUT OFF WHEN THE FURNACE SHUTS OFF AFTER TEMP IS REACHED


Check the t-stat to make sure that the "fan" switch is st to auto. If not the fan is in the "on" position and is always on. Otherwise, It sounds like your "Central Air" is a packaged unit(Furnace and air all one unit outside the home) and the fan relay inside the unit is stuck. This need to be replaced. It is the rectangular unit with the leads from the fan motor attached to it.

Jul 29, 2011 | Air Conditioners

1 Answer

Hello We have a Trane central air


Bad thermostat, improper wiring or bad circuit board in furnace. Turn off the disconnect outside.

Dec 30, 2009 | Air Conditioners

1 Answer

I want to know the conection between the thermostat and the fan and compressor in the central air conditions


r and rc @stat to r on furnace
w @stat to w on furnace
g @ stat to g on furnace
y @ stat to y on furnace
from furnace 2wires going to out side unit typical red & white wire. red goes to y @ furnace and white goes to the neutral of the trans former . BE SAFE turn off power.

r = Red wire Hot
w= White wire heating
g = Green Fan
y= yellow cooling

if their is a B or C @ the furnace terminal board that the neutral . Tom

Jun 14, 2009 | Fujitsu 24C1 Air Conditioner

1 Answer

Central air conditoner unit doesnt blow cool air into home has some ice on the inlet heat and cooling lines going into the central air unit


Change the furnace filter. Make sure you use a cheap one when air conditioning, as the better ones restrict airflow when they filter out so much stuff and then plug up, not allowing enough air to pass over the cooling coil in the furnace's air plenum. Turn the A/C off for a few hours (with only the furnace fan on if possible) to melt the ice off the cooling unit inside the furnace.

Sep 01, 2008 | Carrier Air Conditioners

1 Answer

Air Condition will not come on. We have tried to flip the breaker but no success. The fan on the air condition inside and on the outside is not turning.


If you have one of those new digital thermostats try changing the battery. If your air conditioning is run through a central heating system the power must be on to the furnace. 24 volt control circuit gets its power from the furnace in this kind of case.

Jun 30, 2008 | Air Conditioners

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