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Central A/C Question
Posted by SSpaniel on 9/6/16 at 8:01 am00
Outside compressor fan was making a god awful noise. Went out to check it, and no air was blowing out of the top of the unit. The fan was turning in the wrong direction. Turned it off, waited a couple hours, turned it back on, and the compressor started, but the fan didn't. Gave it a gentle push in the right direction with a screwdriver, and it started spinning normally, but with a horribly loud screeching noise. Turned it off.
My gut says run capacitor is faulty, and somehow caused the motor to spin backwards, which, in turn, messed up the bearings in the motor. That sound about close to right?
I've called a repairman, will be out in the morning. Just wondering if I'm somewhat on target with my thinking.
Thanks in advance.
My gut says run capacitor is faulty, and somehow caused the motor to spin backwards, which, in turn, messed up the bearings in the motor. That sound about close to right?
I've called a repairman, will be out in the morning. Just wondering if I'm somewhat on target with my thinking.
Thanks in advance.
re: Central A/C QuestionPosted by Uncle Willy on 9/6/16 at 8:18 am to SSpaniel
if the compressor is starting.... Then the capacitor is working. So I would think it's the fan motor.
re: Central A/C QuestionPosted by meauxjeaux2 on 9/6/16 at 8:23 am to Uncle Willy
quote:moron.
if the compressor is starting.... Then the capacitor is working. So I would think it's the fan motor.
OP, unit more than likely has a dual run capacitor. One side runs the fan and one the compressor. Sounds as if you have a bad bearing in the condenser fan motor as well.
I just changed out a condenser fan motor and capacitor over the weekend on my friends unit. Cost me $75 in parts total.
re: Central A/C QuestionPosted by Chili Dawg on 9/6/16 at 8:24 am to SSpaniel
Sounds like the capacitor. I doubt the bearings were damaged.
re: Central A/C QuestionPosted by SSpaniel on 9/6/16 at 8:26 am to Chili Dawg
quote:
Sounds like the capacitor. I doubt the bearings were damaged.
The capacitor can make it screech? I hope so. Would rather just have to replace the cap then replace the cap and the motor. Or I guess I could play OT Baller and just get a new A/C.
This post was edited on 9/6 at 8:27 am
I also have an A/C question...yesterday we were doing some housework and I find myself sweating like a whore in church...I go to the thermostat and it is set for 75 but reads that the inside temp is 83...I have the reset button on outside unit so I go to check it and the line on the outside unit is all iced up...so I turn the unit off...defrost the pipe and let the thing be off for a couple of hours...it was beautiful outside so we just opened up the windows and doors and let the house breathe...fast forward and I turn the thing on again..we leave for several hours...come home...still 83 degrees in the house...pipe frozen up again...
so what's my issue?
so what's my issue?
This post was edited on 9/6 at 8:48 am
re: Central A/C QuestionPosted by meauxjeaux2 on 9/6/16 at 8:48 am to SthGADawg
low freon,very dirty condenser coils or dirty evaporator coils
Take pics before doing any step of this to refer to when putting back together.
Turn the breaker off to the unit. Pull off the disconect on the wall that feeds power to the unit. Take the top off and carefully take off the fan blades and unhook the fan motor.
Don't let a capacitor shock you by touching the leads.
Take motor and its capicitor (if so equipped) to a parts house and get a new one. Put back together and you're ready to roll.
Turn the breaker off to the unit. Pull off the disconect on the wall that feeds power to the unit. Take the top off and carefully take off the fan blades and unhook the fan motor.
Don't let a capacitor shock you by touching the leads.
Take motor and its capicitor (if so equipped) to a parts house and get a new one. Put back together and you're ready to roll.
This post was edited on 9/6 at 9:03 am
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re: Central A/C QuestionPosted by Franktowntiger7 on 9/6/16 at 8:58 am to SthGADawg
In order for an AC to be in code it only has to cool down 20 degrees from the outside. So if it's 95 outside and the AC has it down to 75 then it's working. Don't get me wrong it could work better but it is in code.
re: Central A/C QuestionPosted by meauxjeaux2 on 9/6/16 at 8:59 am to Bullfrog
sounds like a mobile home
re: Central A/C QuestionPosted by SthGADawg on 9/6/16 at 9:00 am to Franktowntiger7
83 inside...not 103 outside...actually was about 89 here yesterday
Ok. If your outside unit is clean and the inside is as well, which means you have good movement of air over both coils, sounds like a freon leak.
You many also notice the air blowing upwards from the outside unit is not very warm. That normally is pretty warm air as the outside unit is throwing off the heat it is getting from inside your house.
You many also notice the air blowing upwards from the outside unit is not very warm. That normally is pretty warm air as the outside unit is throwing off the heat it is getting from inside your house.
This post was edited on 9/6 at 9:07 am
quote:
You many also notice the air blowing upwards from the outside unit is not very warm. That normally is pretty warm air as the outside unit is throwing off the heat it is getting from inside your house.
It's quite a scary feeling when the air blowing out of the top is cold. Or is not blowing out at all, but rather going in.
Three words I hate to think of: Air Conditioning Problems, because normally, I default to thinking it's the worst possible thing that could be wrong, which it usually isn't.
quote:
Take pics before doing any step of this to refer to when putting back together.
Turn the breaker off to the unit. Pull off the disconect on the wall that feeds power to the unit. Take the top off and carefully take off the fan blades and unhook the fan motor.
Don't let a capacitor shock you by touching the leads.
Take motor and its capicitor (if so equipped) to a parts house and get a new one. Put back together and you're ready to roll.
OK... since it appears I already have to change out the motor, if I turn it on and ensure that the fan is running and in the right direction, will it hurt anything (like the compressor) to run it, even though it's horribly loud? Just for say an hour at a time if it gets too hot today before I get a chance to do it? Or best to just leave it shut down all day? My wife wants to know... she says she knows how to stick a screwdriver in an "push-start" the blades. I just don't want to risk damaging the compressor, but if it gets too hot, it'll just shut off, but still, that can't be all that great for it, I would think.
re: Central A/C QuestionPosted by cave canem on 9/6/16 at 9:28 am to SSpaniel
You have at least a bad capacitor, and likely a fan motor as well if it took much effort at all to spin the fan.
You shure it was not more of a humming than screech.
freon has zero to do with your problem
You shure it was not more of a humming than screech.
freon has zero to do with your problem
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