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We have central air system that turns on but does

We have central air system that turns on but does not cool

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  • John Fourteen Six May 11, 2010

    Need more info, Does the fan outside run, are any copper lines outside at the wall cool or cold to touch, any other noise comming from main unit outside, (compressor running sounds a bit like a dinging noise). Is the fan inside running? Have you changed the filter? Does it turn on/off with thermostst? Is thermostat in cool mode or just in on postiion?

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  • Expert
  • 92 Answers

Sounds like th outdoor unit is not turning on.check to see if the motor and compressor is on.

Posted on Jul 16, 2009

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Posted on Jan 02, 2017

  • 74 Answers

SOURCE: central air conditioner doesn't cool

A central air conditioner that runs but doesn't cool may just need to be cleaned. Plan to do this on a relatively warm day. First look for your owner's manual and, if you can find it, follow its instructions. If you can't find it, request one from the manufacturer (see Resources). To clean the filter, remove it from the furnace or air handler (it?s usually located inside or very near the air inlet side). Replace a disposable filter or clean a reusable filter according to the manufacturer?s directions. 1) Before you begin, check the thermostat to make sure it is set to "cool" rather than "heat." Then turn off the power to the unit; there is normally a shut-off or disconnect panel on the house wall next to the outdoor compressor. Otherwise, shut off the air conditioner's 240-volt circuit at the main electrical panel. 2) Rake leaves and debris away from the outdoor condenser. 3) Remove any protective grille or cover from the condenser's fins. 4) Use a soft brush to clean dirt and debris from the fins, then vacuum them with a brush attachment (be careful not to bend or damage them). If you accidentally bend fins, you can buy a comb made for straightening them at an appliance parts store. 5) Unscrew and lift the top grille off the unit, if possible. If the fan is attached to the grille, be careful not to pull any wires loose. 6) From inside the unit, hose out the fins (protect the wiring and motor with plastic). If your owner's manual calls for lubricating the motor, do that now--don't over-lubricate. 7) Then reassemble the unit. 8) To test it, turn the power on and set the thermostat to turn the unit on. Let it run for a few minutes, then feel the two pipes that connect to the condenser unit (slide any insulation back). One should feel warm, the other cool. Otherwise, call an air conditioning technician--the refrigerant may need to be recharged. NOTE: Avoid straining an air conditioner's compressor by waiting at least five minutes between turning it off at the thermostat and turning it back on. Air conditioner or heat pump still giving you trouble? To Home Problem Solver Main Page Copyright. All rights reserved. Interested in licensing this DIY Content? Related terms: what to do if, how to fix, troubleshooting, DIY, air conditioner doesn't cool, air conditioner too warm, warm air from air conditioner, air conditioner not cold enough, how to clean air conditioner, cleaning air conditioner, air conditioner cleaning

Posted on Jan 18, 2006

MNTECH
  • 1543 Answers

SOURCE: central air conditoner unit doesnt

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.

Posted on Sep 01, 2008

  • 8 Answers

SOURCE: no heat coming from central air unit when heat is turned on.

check t stat make sure its set up for you system some stats have to be set up for a heatpump or iits gas or electric heat

Posted on Mar 13, 2009

  • 14 Answers

SOURCE: Central air system blows cool air not cold and

your indoor unit is only circulating the air in the house. for your condensing unit. check your breaker in the electric panel. your contactor or your capacitor.

Posted on Aug 09, 2009

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2 Answers

What type of refrigerant should be used in a Mitsubishi ms09tw 2001 air conditioner?


The answer is R410A.

Refrigerant Types in a Central Air Conditioner
There are 2 different types of air conditioning refrigerant currently used in residential cooling systems. R-22, commonly referred to a Freon and R410A, a blend considered to be more environmentally friendly, sometimes called Puron.

R410A (sometimes known as Puron), is the industry's choice to replace R-22 in central air conditioning systems. It is less reactive with the environment while having the same home cooling characteristics of R-22. R410A is not interchangeable with R-22-you choose one or the other and your air cooling equipment is designed to operate with it. When you purchase a R-410A system, a new line set is included with your central air installation as well as a new evaporator coil. Our experience with R-410A has been excellent. New cooling systems have been dependable and efficient, as well as operating quieter! R-410A is the refrigerant of the future!

Less reactive with the environment
Replaces R-22 in the year 2020
Cannot be used with R-22 systems
Quiet and dependable
Freon, R22, heat pump refrigerant
R-22 also known as Freon has been used for decades as the refrigerant in central air conditioning systems. However it has been linked to Ozone depletion and has therefore been banned from being manufactured after the year 2010. It's price will increase as the supply decreases.

Good luck,

Marty

May 27, 2014 | Mitsubishi MSH09TW Air Conditioner

1 Answer

Condenser shuts down after a couple of hours.


check capacitors, make sure the condensor coil is clean. sounds like the compressor is overheating. is the condensor fan motor still turning when it stops cooling. if not check low voltage wires to condensor, furnace and t-stat

Aug 19, 2009 | Amana Haier AP125HD Air Conditioner

1 Answer

Central air system blows cool air not cold and


your indoor unit is only circulating the air in the house. for your condensing unit. check your breaker in the electric panel. your contactor or your capacitor.

Aug 09, 2009 | Carrier Heating & Cooling

1 Answer

No heat coming from central air unit when heat is turned on.


check t stat make sure its set up for you system some stats have to be set up for a heatpump or iits gas or electric heat

Feb 25, 2009 | Heating & Cooling

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 Heating & Cooling

1 Answer

Central air and heating, not cooling


Need to have checked out by a diagnostic ac man.

Aug 08, 2008 | Haier Energy Star ESA3183 Air Conditioner

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