Those aren’t supposed to be round on top.
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This was me on Sunday… And then also on Monday after relacing the cap and then realizing that the fan motor was janky (which might be what caused the cap to fail)
At last it’s an inexpensive and easy fix. Just buy another capacitor with the same specs and swap them out. Better yet, buy two! Keep one as a backup.
Don’t buy an electrolytic capacitor as back up and store then over a long time. They will degrade and will be bad when you finally need them.
MKP/MKT capacitors are an exception since they don’t degrade the same.
Yeah, I bought one to make sure that was the only problem. It just came back up so, now I’ll pull the furnace apart and find what size it uses for the blower keep them both on hand.
They can blow on their own but chances are you have a junk contactor or a fan that draws too much amperage.
It’s also possible a critter shorted the contacts. Happens all the time in Florida. Usually the fried lizard is still there.
True enough.
3 year old unit :(
Then it certainly shouldn’t have failed yet so either high cycle rate or high draw.
Clean both coils and keep watch on how often it runs and how long it stays running for a couple weeks. Also if you still have a analog bimetallic thermostat those can fail and cause rapid cycling and if the compressor isn’t smart enough to delay they can cycle themselves to death.
keep watch on how often it runs and how long it stays running for a couple weeks. Also if you still have a analog bimetallic thermostat those can
It’s on an ecobee which appears to be behaving, pulling data from homeassistant on emporia power, it seems to be pretty chill.
she’s 1.5 ton pulling 1300 watts while running which actually seems low to me.
36.5°c for people who use sane units ;)
As much as I like the metric system, temperature in the world is the one place where I prefer Fahrenheit. Having to care about decimal points on a thermostat just seems like trying too hard. “Oh honey, could you turn the thermostat down to 21.1C?”
You know that 100 is hot as balls. You know 0 is cold AF. 0C is 32F. That’s not really that cold, I’m shoveling snow in a t-shirt. 0F is really that cold. It is almost more akin to a percent of comfort scale than a measurement of temperature.
It is an interesting thought experiment though, as anyone using a given measurement scale gets used to it over time. I’ve been doing dual for a while to better intuit fuzzy translations in my head without having to run a formula every time.
Just an opinion of course, and not trying to have some flagrant discussion. I’d gladly switch to Celsius if we ever finally left Freedom Units. Thus far, the only places you see it in the US is in science, medical, and pop companies selling 16.9fl oz (just shy of 500ml) beverages instead of 20, so they can milk their bubble sugar water for all the profits.
You do realize the reason fahrenheit is set up that way, is based on the human perception of temperature. 0-100 is the general range or cold to hot. Of course some inhabited areas end up outside that range a bit, because humans are adaptable but generally speaking it allows for far more graduation in every day real world scenarios. Metric is good for science, but not ideal for casual everyday usage of hot and cold.
Your body doesn’t really care what the boiling point or freezing point of water is. But you should and generally do need to preemptively plan for environments outside the fahrenheit scale.
Your body doesn’t really care what the boiling point or freezing point of water is.
Yes it does.
Maybe Fahrenheit is really for tardigrades. Those don’t really care about the freezing temperature of water.
You do realize the reason fahrenheit is set up that way, is based on the human perception of temperature. 0-100 is the general range or cold to hot.
That is not why fahrenheit works the way it does. This is something Americans have appropriated as a silly and poor excuse for using it. “cold” and “hot” are completely arbitrary and subjective terms, and the 0-100 range is as arbitrary.
Metric is good for science, but not ideal for casual everyday usage of hot and cold.
That will come as a surprise to the billions of people using it every day for exactly that purpose. You are projecting your own ignorance over billions of people, because you yourself have no idea how it works.
That is not why fahrenheit works the way it does
You’re entirely right, but it’s fun to trigger people like you with a couple words that ultimately mean nothing.
You are projecting your own ignorance over billions of people, because you yourself have no idea how it works.
You mistake ignorance for simply not giving a fuck. I know what Celsius is, I know how it converts, I just don’t care.
It’s very entertaining to be able to trigger people at will to crawl out of the like bugs and talk shit online, wasting their time on a topic that doesn’t matter in the slightest. It’s usually the Europeans, they seem to have a superiority complex about this specifically for some reason and love typing at length about it. Most other countries outside the EU region don’t bother, probably because it doesn’t matter.
Also, here’s the obligatory reminder to the Europeans that the US began using metric in 1866 and officially switched to the metric system in 1975, it just wasn’t made mandatory to switch, so most didn’t. Because it doesn’t really matter for daily life which system is used.
Ah, well here’s another one of those down votes you were looking for.
Side note, I’m American. After getting a mechanical engineering degree is was clear to me that metric is just better. Maybe it doesn’t matter to you, maybe it doesn’t matter to most people, but if you actually have to spend time thinking about this stuff then it starts to matter.
You sure write a lot for someone who just doesn’t care
Lots of downtime at work at 3am. Might as well poke the Europeans since they’re awake.
Oh, just can it, American.
Epic projection comment. How very much your multi paragraph reply screams “I don’t care”.
Hey. Remember when the beagle spacecraft totally slammed into the Martian countryside because someone used imperial units? 2 year wait for some good times.
slammed into the Martian countryside
At least it avoided the Martian urban areas.
No, the human perception of temperature thing is a myth. Originally 0F is the freezing temperature of a brine solution, and 90F was Fahrenheit’s estimation on the average human body temperature, and then the scale was adjusted so that it fit in better with Celsius reference points (freezing/boiling points of water).
Reference: https://en.wikipedia.org/wiki/Fahrenheit
So it’s all a hack.
You do realize the reason fahrenheit is set up that way, is based on the human perception of temperature. 0-100 is the general range or cold to hot.
You do realize that Celsius is set up based on known, objective, & measurable data points instead of subjective things like “hot” and “cold”.
The 9 and 100 in F is a completely random range, where 0 is a random solution freezing point and 100 was an estimation. Tell me how it’s better than C, tied to water, the main stuff we all need to live in this planet and probably also for aliens in other planets.
I personally would use Kelvin for science, Celsius is much more useful for everyday things like whether it will rain or snow, whether the paths will be icy, how hot it will be according to the weather report and how hot to make stuff when boiling water or cooking. Kelvin is great for not having negative temperatures which don’t make sense.
As much as that sucks, you clearly already know the fix and are working on it. Grats to you for having the skills bro. Please work safe, 2 phase electricity doesn’t play around.
Your upstairs must be literally boiling.
Or damn near freezing
After replacing the capacitor I set the thermostat to zero Kelvin
Only a Sith deals in absolute zeros!
Nah, “freedom” units there’s a whole other human’s worth of temperature before it actually boils.
Until you can fix it, open the windows, curtains and blinds at night and shut them during the day.
Im sure OP knows what they are doing here but for those that don’t, be careful with capacitors. Especially larger ones like these and bigger as they can hold quite a charge for some time after being unplugged. I personally watched someone shock the shit out of themselves with this exact type of AC capacitors. They were showing someone corrosion on the terminals, bridged the connection and ended up putting his arm through a wall from the jolt.
Yeah, they’re not to be trifled with. If the one I pulled out was actually capable of still holding voltage, it would have been more of a worry.
It’s all normal electrical safety, Trip the breaker, pull the shut off at the disconnect by the condenser outside, take a picture of the wiring on the cap, ground each terminal with a screwdriver, pull the wires off with insulated pliers. Replace the cap, put the wires back where they belong. Reconnect the disconnect, turn the breaker back on, use the thermostat to call for cooling.
It would be good form to replace the contactor If you have one, but they’re a little harder to find and it’s not usually necessary.
What am I looking at?
Motor capacitor for an A/C compressor. A $15 part that a service company is going to charge $400 for a guy missing most of his teeth to replace in 2 minutes.
for a guy missing most of his teeth to replace in 2 minutes
A good reminder to not test unknown capacitors with the tip of your tongue.
When I used to fix cars for a dealership we would sometimes have the service advisor ask us to do work for free. “Come on, it’ll just take you ten minutes!”
I’d tell them that they can do it themselves if it only takes ten minutes. “But I don’t know how to do that!”
You’re not just paying for the part, you’re paying for the knowledge, time, and tools of the technician.
And to be completely honest, if you call an HVAC repair company, they’re likely to do a whole PM cycle on it. Flush the condensate line and pan, clean the coils and the heat exchanger, replace the contactor if you have one, take the temperature differential to make sure the unit is operating reasonably well, replace the blower belt it’s not direct drive. I PM the unit myself every spring and fall. I probably should have had eyes on that cap though.
Good luck? I would just go to a convenience store and spend my there if this happened to me… also like 38c(~100f) right now here
What is that?
It’s a large capacitor. They are used in those big outdoor AC units to kick start the
fancompressor. Being outdoors and subject to large temperature changes and vibrations for years they inevitably fail.https://static.homeguide.com/assets/images/content/homeguide-technician-replacing-ac-capacitor.jpg
They are to help start the compressor, not the fan. Anything with a compressor will have one, like your fridge.
Ah, you’re right. Got it mixed up with furnace fans which have smaller caps.
I’m assuming that it’s some sort of component from the air conditioner, but damned if I know what it is. Looks like power plugs on it, and someone else mentioned “caps”, so maybe a capacitor, though I wasn’t aware that there was some kind of plug standard for large removable capacitors.
kagis
Yeah, this capacitor looks similar.
EDIT: Apparently air conditioners can use large capacitors:
https://www.amazon.com/Capacitor-Conditioner-Multi-Purpose-Capacitor-5-Warranty/dp/B092ZQ3Y3N
Capacitor for Air Conditioner 5 uf MFD 370 or 440 Volt VAC, Multi-Purpose Round Capacitor for AC Motor Run or Fan Motor Start or Condenser Straight
EDIT2: Oh, I bet I know what it’s for, given the “Fan Motor Start” and what I assume is a misspelled “Condenser Start” text on the Amazon listing. Some hardware will draw a lot of juice when starting up. Laser printers are prone to this, for example. The references above are to mechanical things, moving components, and maybe one need extra power to overcome static friction, to get the parts in motion initially; once moving, they face (lesser) kinetic friction. One option is to just draw a ton of power from the line, but then that increases the peak power demands of a device. Another option, gentler on whatever circuit or external power source is providing the power, is to charge a capacitor for a bit and that’ll let you create a big surge of available power for a moment without having to have higher peak demands on the external power source. Adds to device cost, but limits its peak draw.
Not quite- these motor capacitors provide a phase shift for a second set of windings. Without it, the motor will just hum and not rotate.
You are describing bulk or filter capacitors that go from supply to common on a DC circuit, parallel to the load. These motor caps are on AC and in series with the load.
Gotcha, thanks!
Once you po you can’t stop
Once you pop you can’t
stopstart
Yea, always keep spares of caps
And be grateful it’s not something so much more expensive to fix!
