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My air conditioner blows cold air, but when the compressor starts up the lights dim several times, like the motor is having problems starting. In addition, after it does start the compressor only runs for a couple of minutes then shuts off before reaching temp.

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<span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN">Hi,</span><br /> <span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN">Probably have a bad capacitor....replace that and see if it helps...if not then you got a compressor dying...</span><br /> <span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN"> </span><br /> <span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN">Here is a tip about troubleshooting your air conditioner...</span><br /> <span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN">There are many things that can cause your air conditioner not to cool&hellip;<br /><br /><a rel='nofollow' href="http://www.fixya.com/support/t4975332-c_run_only_humming_noise_when_turned" target="_blank">Air Conditioner</a> Trouble -Review the <a rel='nofollow' href="http://www.fixya.com/support/t5003406-compressor_failure_sends_out_hot_air" target="_blank">Possibilities</a> <br /><a rel='nofollow' href="http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi" target="_blank">http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi</a><br /><br />heatman101 <br style="mso-special-character: line-break" /><br style="mso-special-character: line-break" /></span>

Posted on Aug 25, 2010

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Posted on Jan 02, 2017

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How do I fix a comfort aire rad-123g air conditioner that won't blow cold air?


Check the thermostat. It turns on the compressor and fan in the outside unit. Check the relay for the compressor and the start capacitor too. If it's bad the motor inside the compressor will pull too much current and will open the thermostatic safety switch mounted on the compressor.

May 28, 2016 | Heating & Cooling

1 Answer

Air compressor on Heil air conditioner is humming but not kicking in


Capacitor Failure Symptoms are sometime harder to identify without the right tools and expertise. Capacitors can be found in several different sizes and shapes. There may be one or multiple capacitors included in your ac with regards to the design. While the most popular capacitors are the types found on circuit boards, the ones most associated with air conditioning will be the bigger capacitors that assist start and run your motors. There are several motors present in an conditioner and heater systems:
  1. Compressor Motor Run Capacitor: Here is the most popular capacitor that fails. Most of the time these are duel capacitors, which means that there are 2 capacitors built into one. A duel capacitor will have three terminals on the top where a single capacitor will simply have two terminals on top.
  2. Outside Fan Motor Run Capacitor: That is the smaller capacitor found with or part of the Compressor Motor Capacitor. It helps start and run the outside fan that blows air through the outside coils.
  3. Indoor Blower Motor Run Capacitor: Similar to the outdoor fan motor capacitor, it is a small, single (two terminals) capacitor that will help start and run the indoor blower motor.
  4. Start Capacitor: Some models include an auxiliary start capacitor that helps jump start the motors. Most are found on the compressor. These are less common.

You may need to get that checked out.
Air Conditioning

Oct 16, 2012 | Heating & Cooling

2 Answers

My ac central air is blowing air but not cold


Problem #1:Outdoor condensing fan motor has stopped running. This problem could be caused by a bad motor run capacitor. If your motor capacitor is not the problem, then more than likely you need a new motor. Is the fan blade tight, stiff or hard to turn? If the fan blade is hard to turn then you probably need a new motor. Problem #2: Air conditioner compressor will not start. When power is applied to the air conditioning outdoor unit the fan starts, but you hear a sound like the compressor is trying to start, "UGGG"..., for about 5 to 10 seconds and then all you hear is the outdoor condenser fan run. The compressor is locked and will not start. What is happening is the compressor is trying to start, but because the compressor motor is locked it tries to start for a few seconds and then because of the high amperage being drawn goes off on internal overload. The internal overload protects the compressor windings from overheating and burning up. I see this many times during the start of the air conditioning season. Some compressors just have a hard time starting after sitting all winter long. Some compressors are locked up so bad that I can not start them and must tell my customer that they need a new compressor . Many times I can get the compressor started again without having to buy a new compressor or new air conditioning system by using the device known as a "Super-Boost." I keep two or three of these on the truck. They have saved many of my customers from having to buy new air conditioning compressor. Another good device is called a "5-2-1" kit.

Jun 22, 2011 | Goodman CKL36AR36 Air Conditioner

1 Answer

I have a Dometic 57915.531 air conditioner in my camper. When the compressor goes on the lights go dim. Then if left on it will trip the circuit breaker. When I reset the breaker and turn the AC back on...


Hi,
The compressor is not always starting...sometimes it tries but does not start...
It could be a capacitor and relay problem... or the compressor could be going bad...
Change the capacitor and start relay first and then see if that gets it going...

Here is a tip about trouble shooting your air conditioner...

Air Conditioner Trouble -Review the Possibilities
http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi

heatman101

Aug 04, 2010 | Dometic 57915531 Air Conditioner

1 Answer

How do I know if compressor of my house air conditioner is turning on when I start my air conditioner? When I start my air conditioner the fan outside the house turns on, the air is blowing from the vents...


if the compressor is starting there will be a very small dimming in the house lights,if you go outside to the unit and start it from the outside disconnect when the compressor starts you will hear a whine type noise coming from the outside condenser unit that is the hermetic compressor motor operating,no cold air can be a number of issues,low on refrigerant(not likely on the new sealed systems) a bad motor start/run capacitor(quite likely) a bad contactor on the outside unit that supplies power to the compressor,one leg of the 240volts that supplies the compressor power,the fan will run on 120 volts,but the compressor needs 240 volts check the fuses.breaker in the power panel

Apr 02, 2010 | Heating & Cooling

1 Answer

My freezer is not working properly with clicking sound.


The clicking sound is probably the compressor relay trying to start the compressor. When the lights dim, the compressor is trying to start and hence, pulling power from the rest of the unit. If the compressor has a start capacitor, that could possibly be the problem. If not, the compressor itself should be replaced.

Mar 26, 2010 | Maytag MSD2454G Side by Side Refrigerator

1 Answer

Not blowing cold air


Is the thermostat knob turned to the proper setting? Is the compressor motor running? The compressor is a football-sized case with no apparent moving parts. It is located inside the air conditioner at the center. Is it humming or making any kind of continuous noise or causing the lights to dim? If it is making a continuous noise, and your air conditioner is still not cooling at all, there may be a serious problem with one or more of these areas:

  • Compressor

  • Condenser

  • Evaporator

These items are not user serviceable. You will need to contact a qualified appliance repair technician to repair these components.

If the compressor is not running but you do have power to the air conditioner there may be a problem in one or more of these areas:

  • Compressor

  • Overload and/or relay

  • Thermostat (Open thermostat)

  • Burnt wiring

  • Bad selector switch

  • Capacitor

Aug 15, 2009 | Heating & Cooling

1 Answer

Maytag M6Y18F7A Air Conditioner troble light turns off


you have to open the unit up or atleast see if the fan is failing. The blower motor is usually a double shaft and cool the compressor and also blows the air across the evaporator. Look for the air to stop blowing then the compressor to shake from overheating.

Aug 12, 2009 | Fedders AEY08F2FCOM Wall/Window Air...

1 Answer

No cold air


hi..
The evaporator coils on the front of the air conditioner get very cold during normal operation of the air conditioner. As the warm moist air in the room comes in contact with the cold evaporator the moisture in the air condenses out of the air and attaches to the evaporator coil. As more and more moisture condenses the water begins to drip down into the base of the air conditioner where it is evaporated to the outside of the house.... so the problem might be in ur evaporator coil.. try replacing the coil if u are an expert or else with the help of technician try to fix it..
Is the thermostat knob turned to the proper setting? Is the compressor motor running? The compressor is a football-sized case with no apparent moving parts. It is located inside the air conditioner at the center. Is it humming or making any kind of continuous noise or causing the lights to dim? If it is making a continuous noise, and your air conditioner is still not cooling at all, there may be a serious problem with one or more of these areas:
Compressor
Condenser
Evaporator
These items are not user serviceable. You will need to contact a qualified appliance repair technician to repair these components.

If the compressor is not running but you do have power to the air conditioner there may be a problem in one or more of these areas:

Compressor
Overload and/or relay
Thermostat (Open thermostat)
Burnt wiring
Bad selector switch
Capacitor..

Jul 02, 2009 | Campbell Hausfeld Maxus 30 - Gallon Air...

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