Question about Weather King 12AJA4801AH Air Conditioner

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How to take apart case and back flush heat exchange fins

I am trying to clean out the fan unit on my central air conditioner. I have removed all the sheet metal screws. The fan head is attached to the top cover of the heat exchange unit, I want to flush out the debri that is pulled into the fins of the heat exchanger. Is there an exploded view of the base unit - which side walls can be removed ? How do I remove the top with the fan head, so I can take the hose and back flush the debris ? Any help would be most appreciated. The system is a WeatherKing Scroll compressor - Select 12 unit. George

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  • George Kuhn May 24, 2009

    Are you saying that I need to disconnect the wiring from the fan motor to be able to remove the top of the unit ?

  • George Kuhn May 24, 2009

    I had to loosen the wiring that went to the fan motor - they were tied into a ty-wrap, so I pulled them loose and I was able to set the top to the side and back flush the fins.



    Thank you for the assistance . . .



    George

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You do not have to remove the coils. Just carefully lift the top with the motor and set it aside (power off). Spray the outside with a foaming cleaner (Dow bathroom) and flush from inside out.

Posted on May 24, 2009

  • Robert Moller
    Robert Moller May 24, 2009

    No, there should be enough slack to lift it and set ajar.

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I tried to run my air conditioner the other day, but the house started to smell like dust and dirt. If I pull the vent off and clean in there, how far back do I need to go to get all the dirt? I tri


Not all of your question was view-able, but sounds like your drain tube may be plugged if you are getting musty smells. Inspect the drain tube for clogging (lower right of unit). Pour a glass of water over the metal fins and watch to make sure it drains correctly down and out the tube. Look outside or at the far end where it drains and be sure water comes out. If not, try a bristle brush style pipe cleaner wire to insert and clean the opening. Once its draining well, you should use a mild bleach solution and spray bottle to hose down the entire inside heat exchanger. Never put anything into/between the metal fins except cleaning fluid. Using a brush on the fins will mostly just push the dust back and compact it so the water can't dislodge it. After a good cleaning, it will help to run just the fan or heat mode for a while so the vents dry before using cooling mode.
John

Jan 23, 2015 | GE Quiet-Aire Ductless Split System Air...

Tip

Cleaning Air Conditioner Condenser Coil with Pictures


The most important Air Conditioning maintenance that needs to be done every year is the cleaning of the condenser coil. Doing the job of cleaning the A/C coil is the best way to make sure that your air conditioning system is working efficiently and giving you the best performance possible.


The tools needed to do the air conditioner condenser coil cleaning will be:


Garden hose with nozzle
Garden pump sprayer
Condenser coil cleaner (can be purchased at HVAC Supply houses, or many hardware type stores)
Hand tools needed to remove condenser fan


To do the job correctly you will need to first turn off the power to the unit and remove the condenser fan.


heatman101_3.jpg





Once the condenser fan is removed then, you should wet down the condenser fins with a garden hose. Use nozzle that will give you a high volume spray but not with high pressure. Too much pressure will bend the fragile fins and cause them to shut off the ability of the air to flow through them, this is want you want to avoid. You want it to be as easy as possible for the air to get through the fins, for the best possible heat exchange.


After wetting the fins, you then will need to spray the fins inside and out with a foaming coil cleaner. Make sure to wear eye protection and hand protection. If you have sensitive skin, you may also want to wear long sleeves to protect exposed skin. I buy it in a concentrated formula then dilute it with water to the proper working formula. You may need to go over the fins a couple of times with the coil cleaner to get it worked into the fins. Allow the coil cleaner time to work the dirt loose and boil it out of the fins.



heatman101_4.jpg



heatman101_5.jpg

After about fifteen minutes start to rinse the coils with fresh water. This will take a long time and lots of water to fully rinse the coil cleaner from the fins. It also is very important that you get everything rinsed fully. Failure to do this will result in excessive dirt accumulation and also can cause corrosion. Make sure that the water is running clear and that all bubbles are gone before stopping your rinse.


Then reassemble the condenser fan, turn on the power, and check the operation of the unit. It is okay to run the unit immediately after washing it. The water will not hurt the unit.



heatman101_6.jpg

You now will have an Air Conditioning unit that will give you the best possible performance!




on May 15, 2011 | Heating & Cooling

Tip

How to fix problem of Air conditioner doesn't cool


How to troubleshoot and repair the most common problems with your central air conditioner Although some central air conditioner repairs must be handled by a qualified air-conditioning repairperson, you can handle simple repairs and maintenance yourself. Following, you'll find guidance based on the symptoms.

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. The following are basic guidelines, but always refer to your owner's manual.
1) Before you begin, 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. Also shut off the air conditioner's 240-volt circuit at the main electrical panel.
2) Rake leaves and debris away from the outdoor condenser. Trim any bushes that might block airflow.
3) Unscrew and remove protective grilles and the top cover or grille from the compressor. If the fan is attached to the grille, be careful not to pull any wires loose.
4) Use a soft brush to clean dirt and debris from the fins, and then vacuum the fins with a brush attachment (taking care not to damage the fins).
5) From inside the unit, use a hose and nozzle with a trigger-grip to spray debris from the fins (protect the wiring and motor with plastic sheeting or a large plastic garbage bag). If your owner's manual calls for lubricating the motor, do that now--but don't overlubricate.
6) Reassemble the unit.
7) To test it, turn the thermostat to "Off," reset the power at the disconnect by the compressor and the main panel, and then set the thermostat to turn the unit on. Important note: To avoid straining an air conditioner's compressor, wait at least five minutes between turning it off at the thermostat and turning it back on. Let it run for a few minutes, and then feel the two pipes that connect to the condenser unit on the air handler (slide any insulation back). One should feel warm, the other cool.

on Sep 02, 2010 | Heating & Cooling

1 Answer

Toyota Corolla 1995. Quality of air conditioner reduced when stopped (traffic light) or moving at slow speed (condenced city traffic) No problem on the highway. Checked freon gas and fan. Understand that...


Normal, the ac heat exchanger condenser need air moving across the fins to remove the heat. While moving in town the condenser isn't remove the meat that is building up the it's aluminum fins. Even though the vehicle uses an electric fan. The fan is used to cool the engine temperature. If you Toyota is equip-ed with automatic transmission. The electric fan will need to pull enough air to cool the engine temperature, automatic transmission fluid, air conditioner condenser, and maybe power steering condenser to cool the power steering fluid. Later model of vehicles/trucks are using different refrigerants instead R134A in which you Toyota uses.

The simples way to explain is the ac remove heat from inside your Toyota and this heat is removed by the refrigerants inside your ac in the car. To cool the refrigerant this coolant is removed to the heat exchanger condenser located in front of the engine radiator. So, while moving at 60mph there is enough air flow through the radiator, ac head condenser, and other aluminum heat exchangers. GB...stewbison

Sep 12, 2011 | 1995 Toyota Corolla

1 Answer

I have a tempstar central heat and air unit and i need a wire diagram for a model pa5548aka4.


my tempstar central a/c unit will not get above 80 degrees during the day, the charge is fine so we are told, we noticed that the coils and fins are filthy and we have done everything to try to clean it out with a fin tool, fin brush and coil spray and there is still junk in it. we cannot remove it and clean it outside as i would love to do; its too involved to do that so we are trying to clean it in its place we have also sprayed it with a water hose and an air compressor, although it helped some i can still see gunk in it. my coils are on the bottom end of my inside unit. any advice on what else can be done to clean it well? my unit is only 7 years old. also i was told that i need to set my blower to high speed how do i do this and where is it located? thanks for any help or advice. my e-mail is map41269@yahoo.com

Oct 06, 2010 | Heating & Cooling

1 Answer

TRANE 1984 Home A/C Where are How to Clean Coils inside House


the best thing to do it with airhandler shut down at breaker. 1st soften dirt and crud with 409 or different brand. 2nd take a wire brush and clean in up and down motion following the fins on coil.3rd rinse with spray bottle . this is the best you can do without coil removal.

Jul 02, 2009 | Heating & Cooling

4 Answers

How to Clean 1984 TRANE Cooling VENTS inside house No Manuals


The Outdoor unit will be easy 1st diconeect power at panel, or disconnect box near unit. Remove top of unit, be careful not to damage fan blades. Spray coils (fins) with a light degreaser let is soak for 5 mins. wash out coils from inside the unit out. Spray straight on so you push the dirt out the other side.

Re assemble and start up.

Indoor coil will be accessed by removing front cover and you may have another cover to expose the inside of the coil fins. That is where you need to clean. Spray degreaser on coils and rinse off. If its gunked up then use a wire brush 1st. Carefull not to bend the fins over.

Check the drain pan at bottom of the coil to be sure it's not full of stuff. Blow out if needed.

You should be clean and ready for the season

Jul 02, 2009 | Ruud Central System Air Conditioner

1 Answer

Samsung AW1003M Air Conditioner how to clean Fan inside??


hello! there well, there are two fan coupled together on a/c the condenser fan and blower fan,if this is split type the fan and blower are separated.the procedure is the same way.doing this release lock off and take off front cover then pull out ac unit assembly,after pull out,open terminal control box disconnected all wiring connected on compressor motor and fan motor, loosen all stud bolt on compressor blower fan case.this well exposed fan and blower w/ the motor.cover the motor of plastic sheet then, pressurize water wiil use to clean blower fan observed the motor not to wet by water if this wet don't try to run let it dry off or else this wii burn out so take all necessary precaution, beside mosly cleaning procedure includes the fin tube of condenser and evaporator there are foriegn particles and moisture emerged in evaporator mostly that why insufficient cooling effect on condenser heat rejection also affected if dirty fin tube emerged,.theres is lye detergent use and mix to water pour this to evaporator and condenser fin tube wait for 15 to 30 min soaking to rinse dirt will come out to fin.observed not to distorted fin of tube on eveaporator and condenser.,then pressurise this by water again if cleaning was done dry it off until all dirt disappear.if finishe put back all casing of compressor,evaporator and condenser, then connect all electrical control connection on circuit board, double check connection just put back what ever disconnected parts dont try to alter specially electrical control connection on circuit board.this is a hard task and risky if yout not qualified to handle this job bring it or call a service technician.have a nice and cool day regards and thank's.

Mar 29, 2009 | Samsung AW1003M Air Conditioner

1 Answer

Pressure keeps dropping on my jaguar boiler, no leaks in house but hot water coming from overflow outside


hi In most air-conditioning systems, the condenser unit is located outside the house and is prone to accumulate dirt and debris from trees, lawn mowing, and airborne dust. The condenser has a fan that moves air across the condenser coil. You must clean the coil on the intake side, so, before you turn off the power to the air conditioner, check to see which direction the air moves across the coils. Here's how to clean the condenser:
Step 1: Cut down any grass, weeds, or vines that have grown around condenser unit; they could be obstructing airflow.

Step 2: Clean condenser with commercial coil cleaner, available at refrigerator supply stores. Instructions for use are included. Flush coil clean (do not use hose); let dry.
Step 3: Clean fins with soft brush to remove accumulated dirt. You may have to remove protective grille to reach them. Do not clean fins with garden hose, as water could turn dirt into mud and compact it between fins. Clean fins very carefully: They're made of light-gauge aluminum and are easily damaged. If fins are bent, straighten them with fin comb, sold at most appliance parts stores. A fin comb is designed to slide into spaces between fins. Use it carefully to avoid damaging fins.Step 4: Check concrete pad on which condenser rests to make sure it's level. Set carpenters' level front to back and side to side on top of unit. If pad has settled, lift pad with pry bar or piece of 2-by-4, then force gravel or rocks under concrete to level it.

Sep 12, 2008 | Heating & Cooling

5 Answers

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

Jan 18, 2006 | Haier Energy Star ESA3183 Air Conditioner

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