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Old 05-24-2012, 07:02 PM   #1
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ac smells funny.

Once my AC air turns cold it emits a strong fishy odor. I had something overheat and melt last summer which is when I started smelling it. Now it is back with no melting. Wish I knew the name of the part but it is a small black inline square on too of the black capacitor on the roof. Any help?
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Old 05-24-2012, 07:11 PM   #2
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Mold and icky stuff wants to grow in an AC unit. My recommendation is to got to a HVAC place and buy the cleaner and or have them check if you fried something. Smoke tests tend to leave an aftermath. If it is just a growth problem it is not much of a trick to clean. I do that periodically with our cars.
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Old 05-24-2012, 07:18 PM   #3
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I believe my problem lies more in that mysterious black thing I described earlier. It never smelled this untilled that started melting, now it is smelling and that thing is getting hot (IR thermometer read 188 degrees Fahrenheit ). Anyine know what that piece is and why I have burned up 2 in the last 3 months of use? The one I replaced the original with was a used one, RV shop said it was good.
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Old 05-24-2012, 07:18 PM   #4
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Shadowcatche, I checked inside and around, seems pretty clean.
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Old 05-24-2012, 11:03 PM   #5
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I would have a qualified RV air conditioner repair person inspect the unit. There is a cause and effect thing going on which must be resolved.
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Old 05-25-2012, 12:53 PM   #6
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Well I may have figured out the problem, a trip to the local RV medic helped me out. I was running it at a campground with the electric hookup 100' away so I used an extension cord. Medic said that is probably the problem, I am also using an extension cord this time it happened. Moral of the story, don't use extension cords and run the AC!
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Old 05-25-2012, 05:15 PM   #7
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I always check voltage. If the extension cord is of sufficient gauge i.e. 10 ga even 100' would give a voltage drop of only 3.4% and that should not cause problems. On the other hand a 12 ga would give 5.7% and 14ga would give you a 8.8% drop. Frankly I think you got a bogus answer.
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Old 05-28-2012, 10:15 PM   #8
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I'm sorta thinking the same thing now. We went out this weekend and had a breaker melt on us. It was the main breaker. I rewired a new breaker into it and it is good as new. I was only able to find a 20 amp but it allowed me to run fridge, AC, and microwave at the same time so I believe it is sufficient.
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