My Kenmore air con (bought in 2005) is no longer cooling efficiently. Is there anything I can check before calling in the repair person? Is it even worth calling for repairs? I have a window unit in a high rise so I am unable to wash the coils or take it out.
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(of an air conditioning system) alone can have a substantial impact on system
operation costs. A few percentage points of over-or undercharge can raise
electricity consumption significantly and shorten the life of the compressor."
<span style="font-weight: bold;">You must invest
in the proper tools, training and methodology to accurately charge an Air Conditioning system so that it works at maximum efficiency. Using the Thermocharge
method to charge your air conditioning systems to the exact charge needed will save
hundreds to thousands of dollars in electricity and maintenance costs over the years!
Thermocharging method<span style="font-weight: bold;">
<p style="font-weight: bold;">Skilled technicians will <b>"Thermocharge"</b>
your air conditioning system with an exact refrigerant charge. This procedure
produces an exact charge . . .not approximate, but exact.
The Thermocharge method requires special equipment and training to use.
Your installer uses the following instruments:<br />
<p style="font-weight: bold;"><br />
<li>1. An electronic thermometer</li>
<li>2. Sling psychrometer or electronic humidity measuring device</li>
<li>3. Refrigerant pressure gauges</li>
<li>4. Accucharge slide rule calculator</li></ul>
<p style="font-weight: bold;">
Here the tech is using the sling psychrometer to obtain the indoor humidity and
indoor air temperature. He will double-check his figures with the electronic
thermometer laying on the table. He will also verify the readings with an
<p style="font-weight: bold;">
After recording the indoor humidity and temperature the tech will go to the outside
condensing unit to take additional readings. These are the following:
<li>1. Outdoor temperature</li>
<li>2. Indoor humidity</li>
<li>3. Temperature difference, between air entering the evaporator coil, and the air leaving the evaporator coil</li>
<li>4. Suction line temperature</li>
<li>5. Suction line pressure</li>
<li>6. Liquid line pressure (smaller copper line)</li></ul>
<p style="font-weight: bold;">Enter this information
into his special slide rule calculator to determine the exact amount of refrigerant
to put into your air conditioner.
<p style="font-weight: bold;">Let it run for about ten
minutes to verify his figures. If there are any discrepancies, start the
procedure all over again from the beginning.
<p style="font-weight: bold;">
This Thermocharging method of charging an air conditioning system takes time
and patience, but it guarantees that theair conditioning system will operate at
peak efficiency all season long.
How does accurate refrigerant charging help?
<span style="font-weight: bold;">
<li><b>Improved comfort</b> - A improperly charged air
conditioner will not dehumidify properly.<br /><br /></li>
<li><b>Lower maintenance costs </b> - A poorly charged
system will not properly cool or lubricate the compressor . . .significantly
shortening its life.<br /><br /></li>
<li><b>Better cooling and efficiency</b> - Improper
charging means that the air conditioner will not provide enough cooling on hot
days, causing the system to run longer.<br /><br /> </li>
<li><b>Improved efficiency and lower electric bills</b> -
Poor heat transfer from improper charging results in increased power consumption.
A 15% undercharge or overcharge can result in a 25% decrease in efficiency.
This means that the homeowner's electric bill will be 25% higher than necessary.
As the charge drops farther, efficiency decreases faster to 50% or more.<br /><br /></li>
<li><b>Increased reliability</b> - A poorly charged
system will not properly cool or lubricate the compressor . . . significantly
shortening its life. Even if you have extended warranty by a heating company,
you will either be greatly inconvenienced or even end up paying for the repair
if the company stalls and you end up paying another company for the work . . .a $300-$700
repair that will void the warranty. </li></ul>
Energy consumption for home air conditioning accounts for almost 5% of all the electricity produced in the USA.Energy Policy Act mandates minimum energy efficiency standards for commercial buildings, using research and standards developed by the American Society of Heating, Refrigerating, and Air Conditioning Engineers.Energy Star qualified central air conditioners have a higher seasonal efficiency rating (SEER) than standard models, which makes them about 14% more efficient than standard models.Energy efficiency specialists with certified training on retrofits and energy savings on both residential and light commercial units may enable you to save up to 50 percent on your air conditioning bills with the use of a high efficiency energy system.Substantial energy savings can be obtained from more efficient systems.
SEER (Seasonal Energy Efficiency Ratio) is related to the Energy Efficiency Ratio (EER), which is the ratio of output cooling in Btu/Hr and the input power in watts W at a given operating point and also to the coefficient of performance (COP) commonly used in thermodynamics.SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations.
The SEER rating is the Btu of cooling output during a typical cooling-season divided by the total electric energy input in watt-hours during the same period.SEER is related to the Energy Efficiency Ratio (EER), which is the ratio of output cooling in Btu/Hr and the input power in watts W at a given operating point and also to the coefficient of performance (COP) commonly used in thermodynamics.SEER rating more accurately reflects overall system efficiency on a seasonal basis and EER reflects the system’s energy efficiency at peak day operations.The higher the SEER number, the greater the efficiency of your unit. Therefore you will realize greater energy savings.The higher efficiency your product, the lower your long-term energy costs will be.Both central AC and air source heat pumps are rated according to seasonal energy efficiency ratio (SEER).
Before you consider upgrading your cooling equipment, the cheapest way to save money and energy from cooling is to reduce the need for mechanical air conditioning in the first place.Ask your contractor about a variable speed air handler, which will improve comfort and efficiency and allow continuous air filtering at minimum energy cost.Also, because ducts are often responsible for a lot of wasted energy, make sure you hire a contractor who knows about high-efficiency installations.If your central air conditioning unit is more than 12 years old, replacing it with an Energy Star qualified model could cut your cooling costs by 30 percent.
One thing that I am not seeing in your description is that the coil sensor has been replaced. I find it strange that a phone tech could diagnose this, send out a technician and not replace this component. Was the service tech an authorized LG repairman? That is where I would start. I would call LG and ask them for a certified technician supported by LG in your area. I feel you will have better luck with that approach.
Sears sells fridgidair parts. Go to sears .com under there appliance parts. You should
Find the part you need. You might want to check to make sure the sensing bulb for the
Thermostat is in front of the cooling coil just behind your air filter. If it not located properly
It can't properly sense the air temp. And may not shut down .
These is because you have not service your air-con for a long time. The cooling fins are clotted with dirt & dusts accumulated for a long period of time, and the water vapour caught between the cooling fins turn into ice when you set lower the temperture for the air-con. Moreover cool air from the blower/fan cannot pass thru', the cooling fins to regulate the cool air into your room.
You have to get the professionals to do a service on your air-con.
You're right! It's receiving sensor problem with your PCB. Only repairman who knows electronic tech could only repair. I could say the cost of repair in Indian Rupees IRS.850/- maximum. Hope it's helpful?
please make sure first your air con,s compressor is working if it, working and it,s not getting cold then it can be low gas problem or if compressor is not working then please check the thermostat settings and make tempreture correct and setting on cool mode
then i hope if it,s only normal problem then your air con will work again .
after that if not get cold then contact to air con technician for repair it (it,s need to repair and only air con special maintenance person can do it)
First please clean the air filter and ensure that there is no dust settled on the filter which could chock the circulation of air. To throw cool air the unit got to **** the air from the room and in case the air filter is blocked with dust then there will be no cooling at all. Please ensure the thermostat knob is turned to the desired cooling level and try running the unit. Ensure there is no escape route for the cool breeze. Minimize the frequency of the door or window opening in the area to retain cooling efficiency. I am sure your unit will work on taking the above precautions before operating it.