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05-27-2019, 4:38pm | #1 | ||||||
Chief Electrician
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Need AC help
My upstairs AC quit. It will kick on, but the fan outside didn't want to start. It was off all night and today I took a look at it. If I push in the relay, the compressor starts but the fan runs BACKWARDS. If I start it turning the right way and push in the contact, it continues the right way.
I ordered a new cap because it didn't start at all before, but I learned this unit shares the cap with the compressor and the compressor starts fine. Any ideas? |
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05-27-2019, 5:34pm | #2 | ||||||
A Real Barner
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nope
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05-27-2019, 5:52pm | #3 | ||||||
Bantayan Kids '17
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Sounds like a dual capacitor, so maybe just the fan part is bad?
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05-27-2019, 6:34pm | #4 | |||||||
Chief Electrician
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Quote:
This is it... |
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05-27-2019, 6:37pm | #5 | ||||||
Bantayan Kids '17
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05-27-2019, 8:00pm | #6 | ||||||
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Keep the Great Stuff away from your AC unit.
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05-27-2019, 8:15pm | #7 | ||||||
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Since there's already a thread going, I need help too. Came home to downstairs hot...like 85 hot. I had bumped it up this morning because I woke up cold. OK, no problem, bumped it down, noticed no cool air, outside, the condensor is throwing off cool air, not hot air like the upstairs unit. Damn.
I have the old, canister style capacitor, and it has apparently leaked some kind of super sticky stuff out of it. Looks like it got hot and burned a wire off. What is the sticky stuff? It took a scouring pad to get it off my fingers? Am I gonna die? Would this let my fan run but not the condenser? |
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05-27-2019, 8:31pm | #8 | ||||||
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capacitor that must have gotten hot
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05-27-2019, 9:58pm | #9 | |||||||
Chief Electrician
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Quote:
I have a similar issue. Even with mine temporarily running by starting the fan manually, the air blowing out of the outside unit doesn't seem very hot. It's not exchanging much heat. |
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05-27-2019, 10:05pm | #10 | |||||||
10cm member
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Quote:
Perhaps you're low on freon, too? I'm hoping that's not the case for me, because my unit is original and has the old freon (read: super expensive). Keep us posted. |
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05-27-2019, 10:55pm | #11 | |||||||
Chief Electrician
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Quote:
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05-28-2019, 2:03am | #12 | |||||||
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Quote:
the compressor is not running because the start cap is no good/not in circuit, same thing as the fan motor..... |
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05-28-2019, 8:17am | #13 | ||||||
Chief Electrician
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05-28-2019, 11:08am | #14 | ||||||
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There are two values for the capacitor in your picture aerovette. 35 uF and 5 uF. That's two different caps. Probably the 5 uF is blown and that's messing up your fan. The 35 uF cap isn't blown, assuming that's the one the compressor uses.
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05-28-2019, 3:42pm | #15 | |||||||
Chief Electrician
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Quote:
The good news: Amazon Prime delivered my $10.00 cap and I am up and running...in the right direction. Kicks on quickly and quietly. |
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05-28-2019, 4:41pm | #16 | ||||||
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05-28-2019, 5:55pm | #17 | ||||||
Chief Electrician
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May have spoken too soon. It took it from 79 to 76 pretty quick but it doesn't want to get below 76 with the t-stat set on 71.
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05-30-2019, 6:40pm | #18 | ||||||
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My a/c guy never called me back, so I went to the local parts house and bought one, 45 5 370v. $ 24 drive out with a bag of connectors, and my cap is made in USA. Seems to be working fine.
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05-30-2019, 6:55pm | #19 | ||||||
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71? Are you hanging meat in there? I keep mine about 78, but now that I have Mom with me she likes it warmer, so it's 80-81 during the day when I'm gone.
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05-30-2019, 10:56pm | #20 | |||||||
Chief Electrician
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Quote:
If I set it on 74 it holds all day. No problem. If I turn it down to 73, it actually goes UP to 75. |
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