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Posted: 4/14/2017 10:31:36 PM EDT
[#1]
Your motor on the condenser (outside) may have gone out.
How old is the unit? |
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Posted: 4/14/2017 10:32:24 PM EDT
[#2]
Try hitting the fan bearings with something like Tri-Flow or another good lubricant.
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Posted: 4/14/2017 10:32:42 PM EDT
[#3]
Doubletap
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Posted: 4/14/2017 10:34:26 PM EDT
[#4]
Start with the capacitor/s. need to be within 6% of the rated mF.
If those are good and the compressor is running then it's likely the motor. Make sure the capacitor/s are replaced at the same time. |
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Posted: 4/14/2017 10:36:22 PM EDT
[#5]
Either motor died or bearings died. Either which way time for new motor.
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Posted: 4/14/2017 10:36:34 PM EDT
[#6]
It's about an 8 year old York.
There is no noise when I spin the fan blades by hand, and they turn freely. The noise seems to be coming from the bottom of the unit. |
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Posted: 4/14/2017 10:40:39 PM EDT
[#7]
Quote HistoryQuoted:
It's about an 8 year old York. There is no noise when I spin the fan blades by hand, and they turn freely. The noise seems to be coming from the bottom of the unit. |
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Posted: 4/14/2017 10:56:23 PM EDT
[#8]
The fan blade is not spinning.
There is a subdued noise from the unit. Every so often, the noise starts & the unit rattles a bit, then the noise stops. Its quiet-ish for a while, then it starts making the noise again. I'm familiar with discharging CRT voltage. What is the safe procedure to discharge a start/run cap with three connections? |
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Posted: 4/14/2017 10:57:15 PM EDT
[#9]
Motor or capacitor.
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Posted: 4/14/2017 11:00:48 PM EDT
[#10]
turn it off and a tech
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Posted: 4/14/2017 11:02:52 PM EDT
[#11]
Quote HistoryQuoted:
The fan blade is not spinning. There is a subdued noise from the unit. Every so often, the noise starts & the unit rattles a bit, then the noise stops. Its quiet-ish for a while, then it starts making the noise again. I'm familiar with discharging CRT voltage. What is the safe procedure to discharge a start/run cap with three connections? |
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Posted: 4/14/2017 11:18:58 PM EDT
[#12]
I lived in central FL without a/c for 3 years and I worked nights... toughen up.
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Posted: 4/14/2017 11:24:17 PM EDT
[#13]
Quote HistoryQuoted:
The fan blade is not spinning. There is a subdued noise from the unit. Every so often, the noise starts & the unit rattles a bit, then the noise stops. Its quiet-ish for a while, then it starts making the noise again. I'm familiar with discharging CRT voltage. What is the safe procedure to discharge a start/run cap with three connections? ETA: The fan will have a thermal overload, if it overheats it will shut off till it cools down if it is doing that it is most likely the cap, if not the cap then the fan is bad of course. |
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Posted: 4/14/2017 11:47:46 PM EDT
[#14]
The compressor is in the bottom of the unit. Does it still make the awful sound every so often while you are watching it or was the noise a one time deal?
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Posted: 4/15/2017 1:10:38 AM EDT
[#15]
Ok op, so there is some good advice and some not so good advice being given...
If the condensor unit is making noise but the fan is not turning, that means the compressor is running, but no fan. This would lead me to believe its a start/run capacitor. So, kill power via disconnect, open access panel, (should be 1/4" screws, where the power conduit runs in,) and find the capacitor. Pull the three wires off, noting where/what color wires go to what terminal, and test for microfarads. IIRC should be +-about 5.) If its not in spec, change it. If it is in spec, its probably the fan motor. If you change the fan motor, change the cap too. What you should do right now is kill the whole system. Your compressor is probably running right now and overheating. They do have a thermal overload, if it hasnt tripped by now i guarantee you that bitch is running way hot. Also, sorry to tell you, but your york system is builder grade and is a complete pos. When its time to change it, change both the air handler and condensor, buy an American Standard. Use a reputable company. Google reviews your friend. |
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Posted: 4/15/2017 9:34:06 AM EDT
[#16]
Yep - I expected it was complete builder grade junk.
And yep - we turned it off as soon as the failure was identified. There might have been cool air coming from the vents, but nothing good could possibly come from the noises being made to get it. There are some good troubleshooting ideas shared in this thread. Luckily I am not allergic to poking about in household voltage items. Once I get back from the veterinarian with the boys I'll be putting these suggestions to work. |
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Posted: 4/15/2017 4:00:11 PM EDT
[#17]
I have the capacitor pulled.
Assuming the production code contains the manufacture date, it was made 5-13-93. 4.0/35.0, 370VAC York part 024-23297 AmRad part R2000/37 (405+356) No shorts from any contact to the case. Common to each (Fan, Compressor) starts with low/no resistance then resistance slowly grows. It turns out my cheap MM doesn't have capacitance measurements. Looking for one that does. |
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Posted: 4/15/2017 4:16:29 PM EDT
[#18]
The most important question. Why does Amish Bill have air conditioning?
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Posted: 4/15/2017 10:58:44 PM EDT
[#19]
Quote HistoryQuoted:
The fan blade is not spinning. There is a subdued noise from the unit. Every so often, the noise starts & the unit rattles a bit, then the noise stops. Its quiet-ish for a while, then it starts making the noise again. I'm familiar with discharging CRT voltage. What is the safe procedure to discharge a start/run cap with three connections? |
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Posted: 4/15/2017 11:12:02 PM EDT
[#20]
I have two condenser units and live in the woods.
Almost every spring at least one condenser is down. Its usually mice. They love to chew the t-stat wire which is low voltage hot at ll times. Next most common damage is a capacitor. The rodents love to build their nest on top of the capacitor. First time I power up the unit- POP. most of the time its fried mouse, sometimes it takes the capacitor with it. I've sealed every crack and hole and yet they still manage to find a way in. |
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Posted: 4/15/2017 11:16:12 PM EDT
[#21]
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Posted: 4/15/2017 11:21:00 PM EDT
[#22]
Quote HistoryQuoted:
It's about an 8 year old York. There is no noise when I spin the fan blades by hand, and they turn freely. The noise seems to be coming from the bottom of the unit. |
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Posted: 4/15/2017 11:30:36 PM EDT
[#23]
You need someone who knows what they are doing. Get a reputable company if you don't know anyone.
You could have a bad contactor not passing voltage correctly through to the fan and compressor. It that power is not right it will kill your motors fan and compressor get someone out there who knows what they're doing |
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Posted: 4/15/2017 11:39:51 PM EDT
[#24]
I just read a little more. Sounds like the compressor is tripping on high head pressure because the fan or fan capacitor is out. The rattling is herd is likely the compressor valves as it shuts off on high head.
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Posted: 4/15/2017 11:41:29 PM EDT
[#25]
Quote HistoryQuoted:
It's about an 8 year old York. There is no noise when I spin the fan blades by hand, and they turn freely. The noise seems to be coming from the bottom of the unit. Fan motor is dead. Shut it off before it gets expensive. ETA, if you want to DIY, you can figure out the voltage the motor runs at, turn the unit back on, and check for that voltage on the leads to the fan motor to ensure that it's getting voltage and not a problem at the control card. There's likely a relay on the card and that could be the failure too. But IME, it's the fan motor. YMMV. |
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Posted: 4/15/2017 11:46:20 PM EDT
[#26]
Quote HistoryQuoted:
I lived in central FL without a/c for 3 years and I worked nights... toughen up. |
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Posted: 4/16/2017 8:32:58 AM EDT
[#27]
Awesome thread, good luck to OP.
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Posted: 4/16/2017 12:02:38 PM EDT
[#28]
Root Cause Failure Anayliys:
24 year old capacitor in a 24 year old external heat pump / AC unit failed. Resolution: Local Arfcommers helped OP get a suitable substitute - after hours - on a holiday weekend. (Thanks John, Robpiat) |
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Posted: 4/16/2017 6:46:33 PM EDT
[#29]
Excellent! Always look at the cheap parts before spending $$$$ on the expensive one's.
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Posted: 4/16/2017 6:48:50 PM EDT
[#30]
Had that happen to me, ordered a new motor from Grainger. Replaced it and the capacitor while I was at it.
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