4 Wire and 3 Wire CONDENSER FAN MOTOR WIRING! How to Eliminate 2 Run Capacitors!
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- Опубликовано: 28 ноя 2024
- This is How to Wire a 3 Wire and 4 Wire Condenser Fan Motor into the Outdoor Unit. I go over How to eliminate the use of a second run capacitor when replacing a 3 Wire Condenser Fan Motor with a 4 wire version. I show you which wires are directly connecting in the motor and where to connect them as well as other tips! Supervision is needed by a licensed HVAC Tech before doing this as Experience and Apprenticeship garners Wisdom and Safety.
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Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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Check out other videos on the HVACR topics of interest at- ruclips.net/channel/UCOZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public
My old actual capacitor is completely rusty. I am not able to read anything C, Hem and ... How should I proceed by the wire colors? I have brown, red Blue color in the old one. Please help. Thanks
One wir contacter N ,,other capaciter bai yelow brow ok starteimg other engeisezd bai
I have been doing ac for about 30 years. I have always wondered how could this be done. I have always added the fan cap because I thought it would burn up the windings.You gave me a valuable lesson. My hats off to you my friend
This video is older but i hope you see this comment because i cant begin to explain my gratitude to you. My house was 80 degrees at 11pm and expecting continued heat index well into the triple digits so i went outside noticed the compressor fan was not running but my coils were scalding) and started futzing about to find what tomorrows project was going to be. Found 2 capacitors, a dual run and a run oval (for the fan which had shit the bed). I thought it was weird to have them separate and i checked all the wiring diagrams and could not figure it out. Now its 0315 and running stronger then when we first bought the place.
Purchased: August 2023 - still works GREAT!I ruclips.net/user/postUgkxxsUnXhGsSJLim_XnMHyQK0u3XVaW-CGn live in a studio and during the summer it gets scorching hot - really old building with no ac units. I can’t express how EASY it was to install. This unit has been a life savior during the summer and some days during other seasons where it can still be a bit warm at night. In this small place is my friend, a husky, poodle mix and myself. We need AC - lolI don’t use the dehumidifier option - I’m not sure if it will leak in my house, since I did not install the small draining hose that came with it. May look into it late but I don’t worry about much humidity in the apartment. I don’t understand why the negative reviews since all things mentioned, I personally did not find issues with. Definitely worth it!
*Solid, **Fastly.Cool** and gets the job done. For rooms where window-mounted air conditioning is not an option, this works very well. Easy set up, rapid cooling, and great design.*
This video saved my butt. A family member had taken the fan out to clean the coils and wired it up wrong when he put it back together. It was a 4 wire fan with two capacitors hooked to it, but since the big capacitor was the right rating for the motor (5 mF) I hooked the 4 wire fan up as a 3 wire fan with just one capacitor as shown in this video and it worked! Thank you!
Brother. Thank you a million you blessed me tonight so I could get home. Was pulling 6amps until I found your video.
Now 1.4 and purring good.
Thank God for you sir.
Looking everywhere on a how to video for a universal electric motor for a Rheem system. Your video has saved me I’m in California and it’s 108. Yellow, Black and Brown fan…. Perfect California party! Thanks for keeping us cool!
Just changed my fan motor thanks to this video I saved $500.
Thanks!
I know this is an older video but I used this to help me today with a 4 wire condenser motor. Thank you, love your videos 👍🏽👍🏽👍🏽
Thanks MC!
I was just going through this today
Thank you so much, you provided such an easy-to-follow explanation. I have watched numerous videos, and although they gave the same instructions, they left me concerned as to whether or not it applied to my situation with using a single capacitor. I really appreciate you having taking the time to make and share this video.
Appreciate your time to post this video. Got my 15 year old condenser going for the upcoming heat wave! Your help with the wiring of 4 wires to 3 with completely different colors and Johnstone supply to provide a replacement motor and the correct capacitor to go with it. Much thanks!
You are the man.. I just had one of these motors today. Be honest with you, I have not had that much experience with these motors. Thanks!!
Thanks for this; saved me a lot of confusion and worry! Many of the tutorials on fan motor replacement don't really adequately address what to do if the replacement motor wiring doesn't exactly duplicate the original.
Thanks a lot Cat Hammer!
Best explainatory video ive seen on this replacement. Great job explaining things, easy to follow . Thanks!
It took me 6 hours to finally figured out the wording to get an answer to the wiring on the replacement fan I purchased for my a/c outside unit fan. Definitely subscribing to your page.
Thank you !
Thank you !
Thank you !
Thanks Dennis, glad to hear the video helped!
@@acservicetechchannel Hi, I'm still confused on What to do with the brown and white wire?
Cut it wire nut it secured it inside the unit
Thanks, I just installed my universal Mars fan motor, replacing GE motor. The old wires had different colors and watching the video helped me understand alot.
I am very glad it helped!
Used this help today and it saved my repair! cooling is back! Thank you for posting!
Great video. I ran to that issue today. Now I know how to eliminate the fan capacitor.
Best Channel ever! You have educated me so much, I would hire a Pro in heartbeat, but being on a fixed income and disabled I flat can not afford it. You sir are awesome for spending your TIME to help us low income people and help the people who want to be in the trade or just better at the trade. Bless You ....
Thank you so much! I need new fan motor in a pinch and all they had was the 4 wire. Your video made it easy.
Wow never get old because always new young guys coming behind and they need info thanks great video very understandable 👏👏👏
Thank you for watching!! I'm glad you found the video helpful!
Thank you for this. I wish I knew this trick a few months ago when a replaced a couple condenser fan motors on a a couple of large York RTU’s a few months ago. Would’ve saved me time and a major headache! 😀
Great instruction on a 4 wire fan motor and start caps. Proper technique for less call backs.
Thank you! The cap values and wire connections were a massive help. My ac is working again!
You saved me money.. and my family is happy. Thank you!
Thanks Chris!
Thank you for this. I used it today and it was a lifesaver..
Thasts awesome!!
Where do you put the ground wire the green wire?
Thank you for doing this video! It just helped me replace my motor!
Great to hear!
Hi you helped me get my fan running! My wires are not the same color code but i was able to figure it out thanks!
Great to hear!
Awesome video ....love all the things one can learn from these ... please keep up the
good work ...
Thanks Radwkrea!
This video just helped a bunch. Thanks Craig
Best to wire caps from the contactor direct. Go from T2 to the compressor and fan caps separately. Don't jump from one cap to the other for common.
I agree if you replace the motor and require 10 mfds fan capacitor why not insert a 10 mfds fan capacitor strap secure then wire the 2 brown wires to the capacitor and the yellow wire to the T2 side of contactor and the black wire to the T1 side of the contactor in that way you can give warranty to the customer that the motor will run continuously since the both parts are new.
Nice. Perfect explanation and description.
Great job on explaining this wiring.
Glad it was helpful!
Thanks for the help❤❤ great video. Like that you get straight to the point .. have to go check and see if you have any information on contactors now Don't know if I wired mine up right.
Thanks for this - my new motor is installed and running like a top.
Thanks Rich!
Great video. I hooked up the brown/white wire to the fan capacitor and it didn't work. Watched your video and then hooked up the brown wire instead and it worked.
Thanks
Thanks Todd!
i went to hvac trade school, I had to watch this video today. I didnt pay attention in school.
So, out of curiosity, how would i reverse the direction of this motor? I believe i swap the two 120 legs and leave the brown on the capacitor fan terminal.
My yellow common wire from fan motor is connected to the contactor instead of capacitor is that okay or should switch it to capacitor? There is jumper cable from contactor to common as well
Excellent video. Thank you for taking the time to make it, much appreciated.
Thanks Chris C!
Can I cut the yellow and run the brown and white wire to common on capacitor?
Huge thanks for the video. Helped me out a good bit today
Thanks fillupread!
Good video you’re the only one that pretty much explained it I have a GE motor on my carrier it’s older I have just a yellow and brown wire going to my capacitor from the motor and the only other wire is the speed wire coming from the panel box to a separate plug-in on the top of my motor which you plug in different spade terminals to determine the speed so I’m trying to plug in a new one that has six wires on it it has brown and white brown white blue redI think you’re pretty much explained it I just picked the speed wire which is a high speed and Off the brown and white wire and then the brown wire and yellow wire will go to the capacitor from what I’m understanding is that sound right?
I never knew this. Great video
What do I do w the green n yellow ( ground? ) wire?? Part of the 4 but not in the 3 wire motor.
Wire it this way to bypass the control board?
Why do I need constant voltage to the yellow wire? Can’t I just replace the single pole contactor with a 2 pole contactor breaking the power to the yellow wire?
Where do you connect the brown with white stripe wire inside and connects to what? Thank you very much I learned a lot.And where is your place of business,Thanks again.
Will connecting both wires even though the are connect in the fan motor heart the unit?
I connected black and white to the contacter then brown and brown/white to the cap.
Thank you. Just helped me save a ton of time!
I just got a new Fan motor and it has 4 wires I connected three but my motor only Hums and will start if I help it spin. The Cap is New and the contactor is New too, I bought everything together. The cap is rated for that motor. 5mfd.
Thanks, you helped me save a 42 year old dinosaur Luxaire.
Thank God for your video. I thought they sent me the wrong motor.
Just what I was looking for . Awesome body
I am reaching out to you for assistance with troubleshooting a Marvair Wall Mounted air-conditioning unit. The issue we are facing is that when we start the unit, the blower works initially, but after a few seconds, the compressor starts running and then abruptly cuts off. The reason for this appears to be that the condenser fan is not functioning properly. We have already inspected the capacitor, relay, PCB, condenser fan, and high pressure switch, and all seem to be in good working order.
If you have any suggestions or ideas on what might be causing this problem or how we can fix it, please do not hesitate to let us know. We would greatly appreciate any guidance or expertise you can provide in resolving this issue. Time is of the essence, and we are eager to get the air-conditioning unit back up and running smoothly as soon as possible.
Thank you in advance for your assistance and support in this matter. We look forward to hearing from you soon with any recommendations or solutions you may have. Your prompt attention to this matter is highly valued and appreciated.
Warm regards,
This was a great video!! You really do a good job teaching.
Thank you, this came about because of your question!
If i have to add a small cap to a dual run because the fan is out, I move the brown wire from old cap to new cap and then make a wire and hook to common on old cap or contactor and run to the other terminal of new cap???
Yes correct, you disconnect the wire that is connected to the fan and attached to the existing FAN terminal on the cap which is the start wire over to the new run cap for the fan and run a jumper to the common.
very interesting video 😎👍😷
Glad you enjoyed it
Is there any issue in wiring the brown with white stripe to the common terminal on the capacitor? I Ran into that the other day on a system that had a bad condenser fan motor. Thanks
I tried this set up, but my fan motor kept turning off every two minutes for about five seconds. I had to put the yellow wire on the bottom of the contact, then jump the top of the contact to the capacitor to make it work, right.
I’m not a technician, so I can’t tell you why it was doing this just what I did to fix it.
Why does air exit a condenser fan motor grille horizontally instead of more vertically?
We have a trane xe 800 weathertron heat pump. Replacing the fan motor. The guy we got new motor from pit a capacitor on the new one brown wire and brown / White wire. We have a black wire and a white wire. He said put the black wire and the white wire (purple on old motor) back. Dad doesn't remember where they go. The fan didn't work until he had the white wire on contactor and black as a ground. I turned it off cuz idk if it's right. Please help if you can.
Great Vid.
One question, given that you had to replace the dual run capacitor (since the fan motor capacitance had changed) wouldn't it have been less expensive to go ahead and install the 2 wire fan cap? On the other hand, as long as you were there, and having to change a cap anyway, replacing the dual run can't hurt, as the homeowner now has a new compressor cap. Six of one, ..., I suppose.
I am mainly just giving everyone an option. You will need to work with what you have in the service truck. If the cap looks old, I give the building manager the option if they want to replace it anyway. They are very cheap and it would be the worst thing if you were there and then a month later the unit went down because you or I did not want to replace that. Capacitors go bad and very often. You can get 5-13 years typically with them and most calls you are on have units dead smack in the middle of that range. Thanks for the Comment!
Where to connect the 24 volts on 7 1/2 ton carrier condenser
I wanna know how to adding a low voltage wire to the condenser with using a transformer and relay
Thank you sooo much
Question.... could you just hook up the striped-brown to the common side of the capacitor, with out the contractor jumper?.....
You need the common of the capacitor hooked to the120v side of the contactor that gets connected to the common on the compressor. The other 120v side of the contactor is the run winding. Start from the cap gets connected to the start winding of the compressor
@@acservicetechchannel I have connected the striped- brown wire to the common at dual run capacitor and the solid brown to the fan side of dual run capacitor and it works right.
Thank you for the education.
Glad to help Tony!
thank you for the info helps alot.
Thanks for letting me know David!
I have seen some 2 speed condenser fan motors on some ICP units. Its not an ECM, but has 2 speeds. They use a Fan Speed Control board. Its a small board. Why would they do that? Its a simple single stage heat pump.
good video. I know it is a small thing but I was glad to hear you say 120 & 240 volts. It drives me crazy when guys say 110 & 220 when they are referring to voltage. I guess some guys use them interchangeably.
Actually I really agree, I do not like when 110 and 220 is said. It tends to confuse people! Thanks for the comment!
Century old USA ancient lingo uses 100 and 105 and 200 and 210 volts. The original nameplate voltage was 100 volts AC when the USA started with AC on stuff I have from pre 1900. The actual voltage supplied by the power companies has increased with time and the "nominal" 120 volts at my business is in the 125 to 127 region and the 240 volts is often 252 to 254 in non peak periods. An apartment I lived in 3 decades ago had 127 to 128 volts and lightbulbs did not last long. ie I never saw the voltage as low as 120 volts .The 110 volt number is like saying Hewlett Packard versus Agilent or Keysight; it was used for more decades that any other number. :) Voltage does vary by area and how far you are from the regulator on the local feeders from the sub station. Today the utilities use a 120 volt target but in reality the end user often sees/gets between 108 and 127 volts
www.pge.com/includes/docs/pdfs/mybusiness/customerservice/energystatus/powerquality/voltage_tolerance.pdf
One confusion is the utilities service target number is 120 volts but an AC motors nameplate voltage is purposely often 115 volts so there is margin.
There is the service voltage and the utilization voltage here is a nice PDF to further add to the saga:
www.rockymountainpower.net/content/dam/pacific_power/doc/Contractors_Suppliers/Power_Quality_Standards/1C_2_1.pdf
Thank you, quite a few times I have had to have the homeowner call the electric company in order to lower the voltage when it was high around 277. I have also had the homeowner call for too low of a voltage such as 203. Not good for sensitive electronics. Thanks for your Comments!
I installed a first choice condenser motor that has a black, red, brown, white, and a brown & white wire. My unit is a 3 wire hookup. The new motor list the red as (low), black as (high), and white and black as the line side. On the unit side the brown wire runs to the capacitor fan terminal. The red wire runs to the capacitor C terminal and to the contacts. The Black wire connects to the fan terminal on the circuit board. What would be the ideal connection for this condenser fan.
If you have continuity between the white and the brown/white the they can go in the same place. You would have to see what speed the existing motor was running at and match that and only hook up either the red or the black then. The other speed connector would get cut off, wire nut added and maybe electrical tape to make sure the wire doesn't fall off. That is if there is no spare terminal to safety connect it where it won't get powered but you are on the right track. Follow the wiring diagram, thanks
So have a question for you, at 2:07 you state the Brown w/White Stripe & the Yellow wires "are actually connected inside the fan motor." If this is the case why couldn't you use the Brown w/ White Stripe wire and cap the Yellow wire? Is there some reason this couldn't be done?
I had this question also, because the Brown w/ White stripe wire already has a spade connector to attach to the contactor. The only reasonI could think not to do it is if internally, the circuit board traces for each wire cannot handle the same current? But that wouldn't really make sense to me either...
Outstanding !! Nx
What is the green wire for? Ground? Where do you attach it?
Usually attach green to one of the 4 let’s of the condenser fan motor that makes a good ground if it’s not painted which usually they aren’t
Can u explain the process of from from 4 wires to 3 wires? Great video thanks
Basically the brown capacitor wire with the white stripe should have 0.0 ohm of resistance with the common wire so you only have to hook one or both up at the part of the contactor that is connected to the c on the capacitor, thanks
Excellent video.
Thank you!
So if you don't have the correct size cap do you use common on the existing capicitor to wire other one? Brown wire will go on little cap 7.5 and common wire to existing capacitor?
Yes you would either jump from the common from one cap to the other or run directly off the common wire from the contactor to the other cap, thanks!
As for the spade connectors does it matter if they are insulated vs non insulated. Thanks
No it does not as long as they are not near another hot or ground, thanks
Thank you.
If the original was 3 wire and I used the cap that came with new motor and connected all 4 wires. Will it harm the unit?
No it just means that you have 2 capacitors in the outdoor unit instead of one dual cap, thanks!
Can you do video on elm fan motors. For main fan blower?
ecm blower motors? Lance just look up "acservicetech ecm" thanks!
Great video
Thanks Andy!
Neither my old fan nor my replacement fan have those color wires. Old fan: solid brown, purple, and blk. New motor: red, orange, white, and blk.
Life saver!
which wire goes to the herm terminal.
good video....very helpfull
Thanks Armando Avalos!
very nice job thank you for sharing!!!!!
Thank you!
acservicetech no
What about on a defrost board? I'm replacing a 3 wire to a 4 wire. I have Black to defrost board , white to common, brown to the conpacitor and the brown / white wire I don't use.
The white and the brown/white wire should read 0.0 ohms of resistance between each other so it is as if they are the same wire so put the brown/white in the same location as the white wire, thanks
Thank you , help me alot 👍👍
Thanks crz!
Could you have 2 dual capacitors in one system? One powering the fan, the other compressor. For example, say you had a 50/5 dual capacitor. The fan side went bad. You didn't have another 50/5 on hand. But you did have a 30/5. Could you (temporarily) keep running the compressor off the old 50/5 capacitor. But run the fan off the 30/5, at least until a replacement came in?
Yes just need to jump out the commons
A dual run capacitor is just 2 single capacitors in one package. So you can just use one side of it for the high value, and use another capacitor for the low value. In both cases, one of 2 sections would be unused.
How to wire 24 thermostat from out side to 7 1/2 ton condenser carrier
I'm trying to learn what Run Start and Common mean and do on a condenser fan motor and also what they do on the compressor. Could you help please.
Run to common is one winding and start to common is the second winding. Run plus start equals start to common and run to common added together. They are the two electrical windings that are powered for the motor to run, thanks
I just purchased a new fan motor and it came with a 10uf cap. The existing one I have is a dual 370/5uf ...what should I do here ?
Use the one as stated on the rating plate of the new blower motor, thanks
I was taught my an old timer who does not wear any jewelry for many safety reasons not excluding electrocution.
Yes I teach people to diagnose with the load disconnected and whenever possible to test with resistance. I'm planning on getting a silicone ring. Other than that, I refuse to take it off so there is no confusion to my marital status, thanks. That is just my personal perspective.
THANK GOD SOMEONE KNOWS THAT THE BROWN/ WHITE IS TO POWER THE RUN CAP FOR THE MOTOR, IF YOU ARE NOT USING A DUAL RUN CAP, SO YOU DON'T HAVE TO MAKE A JUMPER WIRE. THE SCHEMATIC ON THIS MOTOR NEEDS TO SHOW THAT BROWN/WHITE IS CAP COMMON!!!!!!!! THANK YOU SIR FOR THE VIDEO. MNOW I WILL RETURN TO MY WEEKEND ALREADY IN PROGRESS.
Thanks for the comment Robert!
The diagram on the last universal motor I installed clearly showed that the brown/white was there to power the brown wire. Since I already had a jumper to the run cap, I left the wire full length but capped it off in case I ever want to switch something around.
Couldnt i connect the brown with white stripe to the capacitor instead of messing with the yellow and just cap off the yellow since it is exposed wire on the end?
Yes that could be done too, thanks Jim!
Another great video ACSERVICETECH! Wanted to ask with capacitors, you can go up with the voltage but the microfarads have to stay the same correct? Just asking for verification sake. Thanks for everything.
Correct, if the mfd is off, it will burn up the motor. There is also three capacitor videos in the uploads. Just type capacitor in the search on the channel for more info on capacitors. Thanks for you comments! They are always appreciated!
+acservicetech
Thank you so much. I will check out the other capacitor videos. I wish I could shake your hand for doing these awesome videos, I appreciate you sharing the knowledge with us new technicians. Stay safe my friend.