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A/c hoping can get help few different things all revolving around the blasted a/c first whenever the a/c kicks in every light in the house dims for the initial boot up then good doesn't kick anything off just common sense says when it dims that much to everything else hoping nothings wrong ain't the best thing secondly looking at the a coils on the a/c unit model # c30a 054u on what I believe in an Intertherm unit also looking to clean the thing in hopes of helping to reduce the bill the a/c unit is constantly on moist on the lower half (moved in to home with family trying to help out) some of it did have dust caked on it so carefully removed the dust but week late not quite as much but still dusty. any suggestions on 1 how to prevent it for dimming the light when kicking on? and 2 the easier 1 how to safely clean it?

Posted by Anonymous on

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  • Anonymous Sep 07, 2007

    model # actually is c3qa 054u b

  • Anonymous Sep 07, 2007

    Thanks will look for the cleaning solution at local home depot or lowes (just easier sometimes) but with the lights it is all the lights in the house that dim when it kicks on and it only for the first ....2-5 seconds or less I know that the a/c is on a 20 amp breaker so will check the loads on both sides & see how well they balance just hoping not the compressor ain't got that kinda cash right know...

  • Anonymous Sep 07, 2007

    Thanks will look for the cleaning solution at local home depot or lowes (just easier sometimes) but with the lights it is all the lights in the house that dim when it kicks on and it only for the first ....2-5 seconds or less I know that the a/c is on a 20 amp breaker so will check the loads on both sides & see how well they balance just hoping not the compressor ain't got that kinda cash right know...



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Chandler Ede

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The dimming of your lights at start up tell me two things, One is that the starting Amps may be a little high and drawing too much amperage. Have this checked by using an Amp meter. Secondly, look at your circuit breaker box. Does the Amp total on the right side of the box equal the left side. What I mean is that the Amp load of your box should be as close to equal as possible. If you have too many drawing Amps on one side, it puts strain on that side and will effect all breakers (loads) on that side. You can check this by investigating what circuits are on the same side of the box as your A/C unit and watch the lights associated to that same side and see if they dim when the unit starts. Also watch other lights associated to the opposite side and see if they dim. If they do, you have a compresser issue. To clean the coil you can purchase a coil cleaner at a local A/C repair shop and use a garden sprayer to apply. Rinse off the coil slowly and after you give it a chance to work. Too much water on the coil when rinsing will cause a flood in the bottom of the air handler and may not allow the drain to exacuate the water as quickly as designed. Rinse in moderation. Do this with all power off and the breaker locked in the off position.

Posted on Sep 07, 2007


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SOURCE: filters for a C30A-054U-B condenser

Try going to a local sheet metal fabricating shop or a heating/air conditioning shop. They can probably make some up for you. Usually a lot less expensive than trying to order some from Trane/American Standard.

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