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Started By
Message
Home AC compressor won't start: Any ideas from the OT crowd? FIXED
Posted on 7/2/17 at 6:15 am
Posted on 7/2/17 at 6:15 am
Realized this when we got home last night. The exterior fan is running, but the compressor attempts to start, but immediately shuts down.
Ideas?
1. Bad starting capacitor? (..or is this related only to the fan?)
2. Frozen Compressor?
The outside unit was replaced around 2 years ago.
Of course, this shite happens on a Saturday night so any chance of me getting a part for a DIY today is almost out of the question.
Ideas?
1. Bad starting capacitor? (..or is this related only to the fan?)
2. Frozen Compressor?
The outside unit was replaced around 2 years ago.
Of course, this shite happens on a Saturday night so any chance of me getting a part for a DIY today is almost out of the question.
This post was edited on 7/2/17 at 1:52 pm
9
Posted on 7/2/17 at 6:22 am to LSUAlum2001
Turn ac off and just let the fan run for an hour or so. It may be frozen up.
Posted on 7/2/17 at 6:23 am to LSUAlum2001
You should have a dual capacitor on a residential unit (unless for some odd reason you have three phase power to your house).
Make sure the capacitor is good and that you have both legs of power. If you don't know how to safely use a meter, call a professional.
Make sure the capacitor is good and that you have both legs of power. If you don't know how to safely use a meter, call a professional.
Posted on 7/2/17 at 6:23 am to 8miles
It is not. One of the first things I tried.
Posted on 7/2/17 at 6:27 am to Donkeypunch
I'm about to head outside and pull the fuse block to start trouble shooting it.
Posted on 7/2/17 at 6:32 am to LSUAlum2001
Capacitor or your system is low on refrigerant and the low pressure switch is kicking on. I'm guessing the latter. $56 for a manifold gauge set at harbor freight and a good multimeter that can test capacitors and you could diagnose and get it running yourself for less than the price of a tech visit.
Posted on 7/2/17 at 6:41 am to DeoreDX
Capacitor or your system is low on refrigerant and the low pressure switch is kicking on. I'm guessing the latter. $56 for a manifold gauge set at harbor freight and a good multimeter that can test capacitors and you could diagnose and get it running yourself for less than the price of a tech visit.
Dis right here.
Dis right here.
Posted on 7/2/17 at 6:46 am to Capital Cajun
The coils in the inside unit were not freezing prior to the compressor not starting, though.
And the question is: Where can I get a new capacitor on a Sunday if it is shot?
And the question is: Where can I get a new capacitor on a Sunday if it is shot?
This post was edited on 7/2/17 at 6:56 am
Posted on 7/2/17 at 7:15 am to LSUAlum2001
quote:
Where can I get a new capacitor on a Sunday if it is shot?
I got one on Sunday at Ace Hardware a few years ago. It was about $25. Bring the old one with you so you can match numbers.
I bought two so I have an extra on hand. This guarantees that they will not malfunction again.
Posted on 7/2/17 at 7:30 am to Hangit
Thanks. I'll go later.
Which location?
Which location?
Posted on 7/2/17 at 7:38 am to LSUAlum2001
Also check the contactor.
Posted on 7/2/17 at 7:43 am to diat150
quote:
Also check the contactor.
^This right here. My a/c was doing the same thing, the contactor was welding shut. Inside wouldn't kick on, but outside kept running. All it takes is one measly ant to walk across the contact and it'll create a weld.
This post was edited on 7/2/17 at 7:47 am
Posted on 7/2/17 at 7:43 am to LSUAlum2001
Probably have a coolant leak.
The timing is about right for that to show up...it takes a couple of months of running under high pressure for it to show up.
The timing is about right for that to show up...it takes a couple of months of running under high pressure for it to show up.
Posted on 7/2/17 at 7:44 am to LSUAlum2001
There is a capacitor for the compressor as well.
Posted on 7/2/17 at 7:48 am to LSUAlum2001
quote:
new capacitor
Any electric motor shop should have them for under $20.
The problem is, capacitor malfunction is typically a symptom rather than the cause. If you're fouling capacitors, your motor is probably going bad.
Posted on 7/2/17 at 7:48 am to LSUAlum2001
quote:
Which location?
I actually live in The Green Swamp, about 700 miles from BR. Sorry.
Posted on 7/2/17 at 7:52 am to Hangit
Dang.. I'll call around when they open.
Posted on 7/2/17 at 8:05 am to LSUAlum2001
Does the fan come on ?
also before you do anything check and see if the contactor is stuck, this is common in older units, be sure you pull the disconnect first, if it has burnt spots from arcing you may can file it down some to get you buy but i would replace it when you can
also before you do anything check and see if the contactor is stuck, this is common in older units, be sure you pull the disconnect first, if it has burnt spots from arcing you may can file it down some to get you buy but i would replace it when you can
Posted on 7/2/17 at 8:06 am to FISH N TIGER
Fan is running, compressor is not.
Posted on 7/2/17 at 8:11 am to LSUAlum2001
ok good then its the contactor,capacitor,or compressor is locked up. only other thing you can check is if the pan in attic is full of water,there is a float switch that will shut off the unit if so.
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