Things You'll Need:
- tool kit
- rags
- coil silicone
- connected water hose
- spray bottle
- coil cleaner
- bleach
- 10W-30 oil
- fresh filters
- bags
- air compressor
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Step 1
Before you service your A/C central unit remember to flip all circut breakers involved to off. Prep your work areas at the "A" coil inside and "C" coil outside so the job is easy and you have all you need when you need it.
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Step 2
Remove covering or door to "A" coil inside your home and set proper light for your job.
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Step 3
Remove clips or panel to filters and discard filters.
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Step 4
Take time to notice all connections and piping to get a feel how this system works to make instructions easier.
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Step 5
The basic unit have a catch pan with a mesh of copper coiling in the shape of an (A) on top were your drain pan; frion runs through to cool the air. This air travels through your filter(s) before it travels through your coil to keep the coils from clogging and beginning the stages of air-conditioner burn out. On your catch tray below the coil has a tube that carries the water to the outside of your home, sometimes this tube and tray can become clogged. Under the pan is a blower fan that with the door or metal covering on the wall creates a suction that pulls the air through the filters and coil and into the vents of you home.
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Step 6
Disconnect drain tube and flush it with water hose.
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Step 7
Blow coil and tray clean with compressed air.
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Step 8
Spray coil lightly with a trace of coil cleaner. Spray coil with water for rinse.
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Step 9
Unclip power cords to blower and remove blower.
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Step 10
Unscrew metal casing around fan after you have removed it and remove the fan.
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Step 11
Wash and brush clean the fan outdoors, towel dry and lube center bearings with 10W-30 motor oil.
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Step 12
Reconnect blower until and reinstall.
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Step 13
Reconnect drain tube to drain pan and poor a cup of bleach inside drain pan.
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Step 14
Install new fresh air filters, then move onto outside "C" coil unit. This unit needs to be checked often, your air-conditioner can't be running with out this unit on together or damage will occur.
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Step 15
Without unscrewing the fan, unbolt the lid in which the fan is connected.
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Step 16
Raise the lid slowly and carefully lift a few inches to disconnect fan plug. Set lid with fan off to side after wiping clean. Inspect your compressor and electrical wiring for burning or corrosion. If there is burning or corrosion this may mean you have a leak.
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Step 17
Soak your entire "c" coil with coil cleaner and let sit for a short while.
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Step 18
Using low pressure, flush the coil clean with water.
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Step 19
Reconnect fan and lid assembly. Let air conditioner rest to gather pressure and drip dry.
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Step 20
If needed inspect thermostat and thermostat wiring that leads to "C" coil for tears and replace.
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Step 21
Turn on all breakers to A/C unit and turn on, let run. Letting the air-conditioner rest will cause it to start off lacking but continue to let it run and it will be a dream. Nice cool air! like new
Comments
projectmgr said
on 8/12/2008 If cleaning doesn't get you cool, you will need to have the Freon level checked and filled to the specified levels required in the unit. If you have lost too much Freon, there is a leak somewhere that needs to be repaired before pumping the refrigerant back in. Depending on the age of the air conditioner you may require a new unit.
gspbaxter said
on 1/20/2008 I an owner of a HVAC Company and this "how to" is on the right track but wrong at the same time. Cleaning the condenser coils "outdoor unit" and evaporator coils "indoor unit" are crucial in maintaining your AC in good working order. If in doubt, call a professional!