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Central air conditioning problems
Read and Write Your Air Conditioner Problems

Central air conditioner problems

I hesitate to write the common central air conditioning problems homeowners had. I don’t know how homeowners will use this information.

Just to make this clear. This is for information only, it’s not meant to fix central air conditioner units. Now we’re done with that. Let’s get start.

Central air conditioning problems mainly fall into four situations: electrical problems, mechanical problems, refrigerant cycle problem, and air flow problem. If you have air flow problem, it will affect the refrigerant cycle and Ac components.

For example, homeowners will call us and said he needs an Ac Freon. We will always ask him basic question, like. Did you change the filter? Usually, it’s not the Freon, it’s the ac filters. He doesn’t know that air flow will affect the refrigerant.

Your central air conditioner units will have problem as it ages. We provide you the opportunity to submit your air conditioning problems here.

The lists below are just the tip of the iceberg. So, if you want to read more; you have to provide us the air conditioner problems.

Read This First:

On average we receive 14 or more questions a day and we can’t answer them all or post them online. It would just jam central air conditioning problems page with unanswered question.

If you’re really, really need an answer to your question. We ask that you help other homeowner first.

If you provide homeowners a review on your central air conditioner units, we’ll make sure your question is our first priority above all other question.

Pick the brand on the left and follow it guidelines. If we didn’t have a section for your brand, you can submit to any of the brand on the left.

Make sure you list the same name on the reviews and on this question page, so we know it your reviews. You only have to write one review and afterward you can ask many questions as you want.

Warning:

Most homeowner doesn’t understand how their air conditioner works and they’ll provide us the wrong information. We’re answering their question basis on that information.

So don’t follow anything you read in this page! We’re not responsible for any information you’re putting into action.

Submission Guidelines:

  • Provide the serial and model number of the central ac unit.

  • You’ll have to provide us a lot of details. You’ll need to tell us what you hear, smell, see or touch (If you’re not sure, don’t touch).

    Our answers are basis on the information you provide. So make sure your information is correct. If you provide us the wrong information, you’ll receive the wrong answers.

    Here is Do and Don’t

    For example:

    Do – I turn my central air conditioner units On and the condenser fan is running and I could also hear the compressor running, but I’m not getting any air inside my house.

    This is better!

    Provide us as much detail as you can. If you provide the wrong information, you will get the wrong answers.

    Don’t – My central air conditioner is not coming on, what wrong with it?

    We can’t determine your central air conditioning problems with that detail.

  • No DIY or FIY Question

Write Your Central Air Conditioning Problems

Or

Read Air Conditioner Problems


The links above is for central air conditioner problems only, if you have a general question. Here is the link:

Central air conditioning unit question


Central Ac Unit Is Running, But The Condenser Wouldn’t Turn-Off

You turn the thermostat to off position, but the condenser unit still running. The problem could be:

There is power supply to the condenser units. A switch that supposed to be in the Normally – Open position is actually in the Normally – Close position.

There is Frost Buildup On The Suction Line (big copper line) Or Near The Compressor

You’re getting cold air, but the central air condition kept cycling On and Off. Your central ac units cycle On and Off due to low pressure. The problem could be you have dirty filters and the evaporator coils or the Ac Freon is low.

Central Air Conditioning Units Not Blowing Cold Air

If the central air conditioner unit is blowing air, but it not cold. The possible central air conditioning problems could be:

    The condenser unit is not running, including the compressors.
  1. Refrigerant leaks or not enough refrigerant.
  2. Dirty condenser coils and the evaporator coils.
  3. There could be something wrong with the metering device.

The Condenser Fan Is Running, But The Compressor Doesn’t

We know the compressor is not short to ground. If it is short, the condenser fan shouldn’t run. Here are the possible problems:

    Some air conditioner compressor has hard start system that could be the problem.
  1. Bad electrical connect to the compressor.
  2. Internal safety switch within the compressor is open.
  3. The compressor is lock up due to foreign object or liquid refrigerant.
  4. Bad capacitor

Central Air Conditioner unit Is Running, But Not Enough Air

You have the outdoor units and the indoor units are running, but you’re not receiving enough air from the Ac system. The air is cold, but not enough to cool the house down.

The main device that supposed to move the air within the house is the indoor blower. The symptoms could be:

    The blower’s blade is dirty.
  1. Blockage within the duct.
  2. Duct leaks.
  3. Blower’s capacitor is damage.
  4. Blower’s motor is bad.
  5. Blower is on low speed.
  6. Dirty filters.

The Central Air Condition Is Making Noise

If the central air conditioner unit is making sound and the sound is from indoor. The only electrical part that is large enough to make that sound is the blower motor.

The sound could be from the blade or foreign object is trap in the blowers.

The Indoor Blower Is Running For A Short Time, Then It Stops.

If the indoor blower motor is cycling on and off, the problem could be the capacitor is bad. The internal thermal overload is causing the motor to do that.

The Condensing Unit Is Not Running.

If the central air conditioning unit is not running and the condensing unit breaker tripped. You try to reset the breaker and it trips again.

The problem could be the condenser fan, compressor and other electrical is grounded.

The Central Air Conditioner Unit Is Running Constantly.

If the central air conditioner unit is running and never stop. The possible central air conditioning problems could be:

    The ac filter, evaporator, condenser coil is dirty
  1. Low on Ac Freon

One Room Is Warmer Than The Other.

If you have one bedroom is warmer than the other bedroom. The possible problem could be:

    you had a lot of electronic that is producing heat on that specific room.
  1. Ducts Leak.
  2. The grille is closes.
  3. Object is blocking the air flow.
  4. Restriction within the duct.

These are the common central air conditioning problems homeowners might see within their central ac units. These are just random air conditioner problems; nothing special.

How do you avoid some of the air conditioner problem?

You can change the filter; clean the evaporator and the condensing coils to avoid unnecessary air conditioner problems. It’ll take extra pages to example why. But, it does help.

What Other Visitors Have Said

Click below to see central air conditioning problems from other visitors...

Air Handler Fan Relay   starstarstarstarstar
April 5, 2011
I have a 3 ton air handler in my attic. The fan relay chatters and the motor inside the air handler turns very slowly, and at the same ...

Fan blows, outside unit clicks, but doesn't turn on -- only at night?!  starstarstarstarstar
March 30, 2011
At the duplex we are renting, the technician has been out to service our central air conditioner unit multiple times. He has recently ...

Outside Unit Runs , Indoor Blower Sometimes Does  starstarstarstarstar
March 25, 2011

Ok, I have a Lennox central heat and air system in a house I just moved into. When I put the air conditioner mode on the outside ...

Buzz Noise Outside Motor  starstarstarstarstar
March 24, 2011

03/23 *if any way Possible need reply "a.s.a.p." , it's starting to get HOT here in Alexandria , La.71302*

We had this central ...

blower fan runs constantly  starstarstarstarstar
February 22, 2011
Thermostat switch is set to off. Fan switch is set to auto. I removed the thermostat and it still runs.

Blower Fan Doesn't Run  starstarstarstarstar
Central air conditioner compressor and fan outside starts and runs but the inside Fan (Squirrel Fan) doesn't run, the only way is if I open the cover and ...

No heat, no ac, no fan, no noise  starstarstarstarstar
It's not working at all. We've tried readying the breakers, waiting, and it's too cold to do anything else. We've switched the thermostat on and off, onto ...

Carrier central air conditioner shuts down all the time after only a short time  starstarstarstarstar
Room temp taken 26 cels air con on auto runs 1 hour sometimes less shits down and turns right off I have o climb up to the main switch to turn it off them ...

Central air blows hot to reach desired temp. then blows cold instead of turning off.  starstarstarstarstar
I set my central ac system to heat up to a certain temperature but instead of it turning off once it reaches the desired temperature it starts blowing ...

Outside unit running, but thermostat is off  starstarstarstarstar
We noticed that our outside ac unit runs (the fan) even though the thermostat control is set to "off" inside the house. Is this a problem with the unit,...

leaking  starstarstarstarstar
My central air conditioner unit on the inside of my house is leaking profusely. I checked the pipe for condensation and it is running water very well....

Central Air Compresior Not Working  starstarstarstarstar
Over the last several days the power has went out and come on real quick. On Saturday they blinked really quick. That is a problem with AEP. Sat. Morning ...

Top Fan Stopped  starstarstarstarstar
Well, it started when I got home and e house was HOT 91 degrees. It was blowing air out the vents so I checked the key pad it was on cold. I then went ...

Thermostat problem??  starstarstarstarstar
I am working on a heat pump. The inside does not come on when I put the thermostat to auto, but will if I put it in the on position. Now the inside comes ...

Outside Unit Not Coming On  starstarstarstarstar
I have a Carrier central air unit (model 38ed048300)manufactured in 1983. It has been serviced several times over the years. When I set the thermostat ...

Ruud 10 Seer Central Air Conditioner Unit  starstarstarstarstar
My outside Ruud air conditioning unit is having problems. The outside fan continues to run even if the thermostat is set to off. The only way to stop the ...

Central Ac Uni Blowing Warm Air  starstarstarstarstar
At first my copper line was freezing, so I called someone out to fix it. The service man said it was low on Freon and charged it. It worked fine for ...

Fan Works. Air Conditioner Compressor Will Not Start .   starstarstarstarstar
Started central air conditioner system and it was blowing nice cool air, and then started blowing warm air. I Checked outside. Outside unit was making ...

Intermittent Compressor Start  starstarstarstarstar
I have a York condenser (sorry no model number right now) that is about 6 years old. Lately, when I turn on the A/C, there's no issue, the compressor ...

Air conditioning units kicks on, but not blowing through the vents.  starstarstarstarstar
Turn A/c on thermostat with auto fan, A/C kicks on but there is no air blowing through vents, yet if Heat is turned on than there is air blowing through....

No Power To Air Conditioner  starstarstarstarstar
The air conditioner was working only if we messed w/the thermostat for awhile then we changed the thermostat and now it doesn’t work at all even w/the ...

Central Air Conditioner Not Staying Cool  starstarstarstarstar
When I turn my central air conditioner unit on it comes on and cool air comes out, but after 30 to 45 min, it stops blowing cool air but blows room temperature ...

Compressor Does Not Come On  starstarstarstarstar
My air conditioner compressor does not turn on.
Air handler goes on but not compressor. Could
it be the contactor? What else? It is an American ...

compressor runs for about 5 minutes then thermal shutdown  starstarstarstarstar
I have a construction trailer type air conditioner that I transported to another location. It is the type that hangs outside on the wall with a large intake ...

Central Air Conditioner Randomly Stops blowing cold air  starstarstarstarstar
1.25 year old RUUD 4-ton Condensing unit (3-phase)with Air Handler (UANL-048JAZ); 410a refrigerant.

When I come home and turn the thermostat down,...

Central Ac unit Running Constant With No Results  starstarstarstarstar
1,000 square foot house.

Goodman outdoor unit around 3 years old.

Outdoor temp. around 90.

Had no problems last summer.

Set on 75, runs constantly ...

blower turns on, but not the condenser  starstarstarstarstar
When I turn the central air conditioner On I can hear the blower come on but it just blows hot air. Out side the condenser unit doesn't come on.

I ...

Air Condition compressor will not start  starstarstarstarstar
When the central air conditioning unit is suppose to start the furnace fan does kick on but outside at the condenser unit the fan is humming and I ...

Cold air - hot air - cold air  starstarstarstarstar
My 4-ton central ac unit is 8 years old. The Ac unit works normally for up to an hour then starts to blow warm to hot air.

If I shut it down for ...

Central Air conditioner Unit  starstarstarstarstar
My air conditioner Unit is running. The fan is blowing outside in the unit. However I am not getting any air blowing inside the house.

Central Air conditioning Capacitor  starstarstarstarstar
We have power going to an central air conditioner,I think its the capacitor, I bypassed the capacitor and the compressor came on. but I'm still not sure,...

Central air conditioning unit is working, but no cool air  starstarstarstarstar
My central air conditioning unit appears to be working but there is no cool air. The filters are clean, there is no build up of ice on the lines and ...

Central Ac Indoor Blower Motor Section  starstarstarstarstar
My Central ac system is about 10 yrs old and has been maintained by professionals, since I purchased the home 3 yrs ago. However, I don't want to have ...

The compressor runs but the fan does not  starstarstarstarstar
March 12, 2011
Descripton - 5 ton 12 seer d.p.p. g/e
Model number DAYH-F060N110
Serial Number NALM010365

Problem: When the unit is turned on,...

Central Ac Not Cool Enough To Turn Off On Hot Days!  starstarstarstarstar
We moved in our newly built home in Feb 2003. The house is 4100 sq ft and we had a builder installed Goodman AC unit. The central ac unit worked fine until ...

MY AC RUNS BUT NOT ENOUGH AIR COMES OUT OF THE VENTS  starstarstarstarstar
We recently had our Trane serviced, freon added, pressure checked, new fan motor installed on outside unit, furnace coils have been cleaned but, every ...

Temperture Off and Unit/Furnace Running?  starstarstarstarstar
I recently moved into this apartment and the heating appeared to be off and we weren’t receiving any heat through are heat ducts. they are the small square ...

Air Handler Blower Fan  Not rated yet
April 12, 2011
Getting power to central air conditioning unit outside, nothing comes on. i pushed in on the contactors and everything comes on except ...

Blower Motor Goes Off And On  Not rated yet
My A/C unit works hard here in Phoenix AZ. The compressor starts up and the blower kicks in all like it should. However once in a while, not all of the ...

Central AC Unit Intermittently Makes Noise And Stops Cooling  Not rated yet
I have a Goodman model # SSZ140181AC central AC unit which was installed a little more than a year ago. The unit worked fine up until about 2 months ago ...

Central AC The Blower Motor Keeps On Shutting Off.  Not rated yet
I have had Ann Oil Company going to a house to fix a problem with the blower motor, it keeps on shutting down, they kept use a new excuse each time. I ...

Central Ac Unit Constant Running  Not rated yet
This morning my husband and I woke up to a freezing house. Our thermostat (which we set at 72 degrees) showed 62 degrees and the air conditioning was ...

Central Ac Unit Is Suspect, Not Working Properly But Told It Is.  Not rated yet


I have all three problems that is described on the CAC problems page. I live in Arizona and the house is six years old. Two Carrier Units two zones....

The air conditioner condenser  Not rated yet

The condenser unit is making a loud noise and the fan and the compressor is working. The inside unit is blowing. Also cold air is blowing inside the ...

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