I just landed a great job as an installer and technician at a very professional, privately owned company. In my interview they were concerned that I didn’t have HVAC schooling. I am a professional Subaru technician by trade. Wanted something more diverse in a career. They literally hired me largely based on the fact that I have watched and studied your videos. I have a lot of thanks to give you. So, THANK YOU for helping me get into a better career to support my little three year old daughter!
This is the only video that helps find the right capacitor without reading the old one. The technician replaced the capacitor on a Sunday and charged us 250 dollars. Later on I figured out with wrong capacitor spec because one month later one wire melted. I was not able to find the right capacitor recommended by the manufacturer in any website, manual or customer service. After reading on the compressor I was able to find the right one which is 45, different from the technician replaced 60! Thank you very much sir!!!!!
Honestly dont know how this channel isnt way bigger. You guys rock. Been in the trade 4 years and still learn stuff daily. Also like watching these as refresher.
I bought your refrigerant charging and service procedure book. Thank you for all of your hard work and dedication! You are one of the coolest teachers ever! So clear and organized! Thank you friend! I have learned so much from you!
This is one of the most thorough and well produced videos on understanding and finding your A/C unit's capacitor ratings I've found on YT. Thank you so much for your clarity and attention to detail, and I will continue to follow for more videos like this.
My AC has been out for 3 years. My landlord has not yet fixed it. This may be the most valuable video I've found in a long time. High's in the 90's coming up next week. Thank you sir!!
Thanks my man. You taught me a very important idea on finding the right type capacitor. Never use higher mfd type. I always thought just a little higher wouldn't hurt. Learned my lesson. Thanks again
This video was amazing, as my capacitor was very rusty and I could only see it was a York with ??+5 MFD. In my heat pump I couldn't see the compressor's MFD rating (looks like the compressor was in some sort of jacket, not sure). After discharging and trying to read the capacitor with my multi-meter it showed 20MFD (that seemed too low, I expected 35+). I then decided to give up and just put back the old capacitor which was still working, ... wait for the face palm moment ... I struggled a bit trying to get the screw that holds the capacitor in and what do I see ... a 50 + 5 MFD in sharpie! Appreciate the video you made and whomever had the comment about inking the capacitor rating with a sharpie, whoever did that for my HVAC system absolutely saved me.
Thank you so much! The guy that serviced my ac decided to replace my capacitor because it may fail soon. He didn’t have the exact replacement so he installed one of a slightly higher rating and left with my original. Now I want to have a spare but know way of knowing what was the original. Thanks to this video I am now able to buy one with the exact ratings
Thanks again. I've struggled with people putting in wrong caps mfd in units and customer tells me that fan was replaced a year or two ago, only to find out that they have gone to Higher mfd and caused the start winding to get damaged over time. After my first experience the customer texted me from time to time that the unit fan is still doing good after five years. Ty again for your videos and advice.
Thanks for stressing that the mfd rating is important and the voltage of a new run capacitor can be the stated voltage or a higher voltage. As a preference I always replaced with the exact mfd rating but always with a 440 voltage rating. With contactor replacing, I always replaced with a 40 amp. although the factory installed a 30 amp. Thanks for the excellent accurate videos.
Thank you for these videos. Im just recently getting back into HVAC installs after being a dad for 3 years. I missed it so much. So happy to be back. I'm being thrown into doing some service calls. These videos are helping me out so much. THANK YOU ❤️ Much love and respect to you.
I noticed mi ac stared different and making weird noises and shoot down over heated, I inspected and found the capacitor terminals severely corroborated and the mf information missing, but thanks to your video, I purchase the correct capacitor and the ac is working fine. Thanks and keep up the excellent videos.
love this channel,,,,already saved a ton of money doing it confidently by myself,,,thinking instead of being in the automotive trade, wish I had chosen HVAC
Your channel just popped up so I took a peek. Thanks for the info! As a guy who likes to fix stuff myself whenever possible, (worked on my elec furnace and my RV ac & I have basically no knowledge on subject) your channel resource might be of great help one day soon!
great content, what if the fan writings are worn off? I got the first number and the cap. Just need the fan? do you just guess on that? it is a small fan so i will assume a 5
Great videos!!!! If a start capacitor in a package unit is replaced. Does the new capacitor need time to charge once the power is turned back on or is does it charge instantly as the power is put back on?
Awesome video! I have the exact situation or a completely rusted and illegible capacitor. Found the fan rating no problem on the fan plate but not able to find compressor rating. It is not on compressor plate and I can't find online likely because the model is out of production is my guess since old refrigerant. It is a Copeland CR26KF-PFV-130 compressor. Do you happen to have the manual for that one so I can look up capacitor size?
I sadly report I went to RSI in 2000 and worked at a school district , I was hired by a RSI prior grad and work there for 10yrs. I have learned more about (why it failed) here than from either prior training areas if you will Thanks . I am now 7 yrs retired and still learnin
Great Vid !! I used your method to find out what my AC called for, and as luck would have it my Cap. was replaced by AC Tech. approx. 2 years ago with a 55/7.5 cap.-when I took a picture on compressor like you said it called for a (50 not a 55) is it safe or should I replace it ? the fan rating was correct at 7.5 Thanks in Advance !
Great video!!! I looked in a condenser unit and it had a dual cap with a 60 MFD herm. Looking on repair clinic the model showed it should use a 30 MFD. The 60 MFD was out of spec but must have been in this unit for years. Should I replace with the 30 MFD? I did not look on the unit itself but need to do that too to see if the MFD is noted on the compressor. Trane model TTD760B100A2. Thanks!!
Well done video but it's incorrect at 1:20. Oversize does not burn windings. Oversize can cause relay chatter, wear or weldment on contacts. Undersize reduces starting torque. 10% deviation is allowable. Any information on substitution? There's that call downtime will cost money or product, but I have a truck with assorted spares.
Higher or lower than specified MFR run cap will increase run winding current, increased current reduces efficiency (cost $$), increases heat and reduces lifetime.
you are confused; "relay chatter" refers to the coil on the LOW VOLTAGE side of relays and is caused by LOW VOLTAGE. Impossible for relay chatter to be effected by the side being switched on or off, it can only be effected by the switching circuit that energizes the coil that thrusts the set of contacts closed or open
@@patrickhutchins6935 In capacitor start motors, relays are line voltage. In capacitive circuits current leads voltage. Capacitance reactance of a capacitor in ac circuits plus motor impedance are factors to balance for enough current to provide starting torque. Too small a capacitor and there's insufficient "boost" for starting, and too large there's a mismatch capacitive reactance with varying voltage effects that can cause relay cycling and points heating. Not always noticeable at first, but it does exist. For reference check into the RSES SAMS Manual for further reading.
I was taught ac's the hands on OJT method likecalot if other guys in my trade but alotta guys that were taught the same way. 1 of the things I've always heard about replacing a capacitor is, it's safe to replace a capacitor with a capacitor that's no more than 5mfd higher but never lower. Is this true or was I told wrong. I truly do respect you and value all your teachers n love watching all you tutorials. Keep em coming!!!👍😎💯💯💯
What happens if you encounter an old package unit in a mobile home park, and rating plate for compressor is not readable, in addition to an unreadable rating plate on the cabinet itself? How do I find an MFD spec for compressor?
Thanks so much for the help. I was servicing my unit and saw that my cap was completely rusted, but still working. Got the readings now so I can replace later. Mine reads 28.9 and 5.1. Would that be a 30 + 5? Thanks
Rule of thumb ive always used for the last 10 years is (tonnage x10)+15 = Hermetic. If you're in a pinch you can go up 5 down 0. Better than 99% chance those two rules will get you in the clear.
my 3 ton uses 55uF, so no, don't trust that. if unsure it's better to try several cap values and pick the one that gives the lowest run winding current.
@@dan4091 Congrats on being the 1%. Although with that rule a 45 would still be within 20% needed for guaranteed start. But using the manufacturer's specified from the unit parts list is the most correct.
Bought a house and wanted to ensure what I had was the right size versus 'generic tech 60000' putting in what they had on site. Found this video, super helpful to ensure versus validating on the cap sticker. Thanks!
I love your videos...I have a 26-year-old Lenox 3.5-ton system with a scroll compressor, do you know if these scroll compressors are still available? Or is there a substitute compressor available?
I've never understood why the capacitor size is not standard information that is required to be on the data plate by ALL manufacturers. that is one of the most important pieces of information you need to know when working on a unit. Why would that not be on the data plate. It makes no sense.
it seems that it would require an additional rating plate specific to that unit model. Maybe they dont want to do that so in case the compressor or fan motor is switched out with another version with different cap size, techs wont get confused. It would be nice though!
I’d be happy if they would just stop using the data tags that fade away after being in the sun for 8-10 years. Do think I wouldn’t buy a unit if they charged .50 or 1.00 more per unit and went back to stainless steel data plates. It’s just one of those pet peeves that makes me crazy.
@@speckulator7516 have you seen Trane RTU drawings? They are barely legible from the factory nowadays and fade faster than the damn nameplates! What a joke 🤦♂️
check on the dip switch on the back of the tstat to make sure it is set for furnace and ac instead of heat pump if that is the type of system you have, thanks!
I wonder if their is an equation to figure what capacitor is needed if there are no model numbers on the unit. Like if you know the FLA and voltage could you figure what capacitor is needed?
Yes, take FLA and times that by 2650 then divide that number by voltage needed to run the compressor. That will give you the exact information u are looking for. Its a great question u asked and I’m going thru the comment section to see if Craig has addressed this. He is the best in the business and I’m a little surprised he did not address this formula in the video clip.
It's very simple - run the motor with different value capacitors, use the capacitor that draws the lowest amps. (for motor run capacitors - not start capacitors).
Great idea in theory and maybe completely correct but kind of impractical unless you have a dozen or so capacitors lying around right? And no DIY will have that.
Thx for your videos I have a question sir How to find rpm if you can't read it on an outside motor I been do it trying a regular 1075 first and if I feel vibration or noisy fan motor just swap it to a low rpm and work for me but of course it's a wasting time please give me and idea if there is another way to find the rpm to do de right motor
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@@acservicetechchannel I was able to track it down. Had to turn it to the symbol for diode DC which also has the symbol for capacitor by it, then switch the setting to find correct range. Unfortunately my capacitor read 0 uf between all prongs. Motor only shows 5 mfd and 370v. Compressor has no uf rating on it. Referenced another HVAC site against my Lennox model # and found that it was 35uf. Hopefully its right!
What if my AC unit has 2 capacitors? one is only for the fan, but can I replace the main capacitor with one that can also run the fan motor or do I always have to have 2 capacitors?
A 50/5 uF capacitor will not work in replacement of a 45/5 uF ? My unit has been running 3 yrs now the slightly larger capacitor. Should I put a 45/5 uF back in?
I just got an old window air conditioner running. 38 years old looks like. Electrohome by Keeprite model A601A00 I suspected the capacitor as the blower motor started but the compressor relay/contact was clicking every few seconds and eventually the compressor would start. I expected to have to replace the cap but after removing the wires, I noted a lot of corrosion. Some of the blades were corroded away completely. I took the cap to my wire wheel then scraped the contacts cleaner with a sharp knife. I tested with an analog multi-meter and got decent responses and no shorting to ground. Because the blades were so corroded, I used pliers to squeeze the wire push on contacts a bit to make a tight fit. I put some dielectric grease on the blades to prevent further corrosion. It seem to be running well now, though the thermostat is wanked. I managed to rework the thermostat so it functions, but not as it was designed. Your video was helpful. From factory the micro farad figures were blurred and can not be read. The cap is a JARD. The blower motor does not mention the capacitor and the label on the compressor is behind where I can not read it 😞 I followed your example using my digital multi meter and got 14.75 and 3.97. Does this mean I would need a 15 and 5 capacitor if when this one fails? Any idea where I could get a new thermostat?
If the label is worn off... 1. Take Amps reading from HERM 2. Multiply by 2562= ? 3. Then check voltage from Common to HERM and divide it by the answer from step 2. This will give you capacitor rating under load.
I have the below aircon Goodman GSX140301KB. The capacitor is bad is this: CAP050400440CT. I see another: CAP050450440CT. The difference is the 450 vs 400CT. Can I use the 450 one?
I just landed a great job as an installer and technician at a very professional, privately owned company. In my interview they were concerned that I didn’t have HVAC schooling. I am a professional Subaru technician by trade. Wanted something more diverse in a career. They literally hired me largely based on the fact that I have watched and studied your videos. I have a lot of thanks to give you. So, THANK YOU for helping me get into a better career to support my little three year old daughter!
Jerome, that is just so awesome! Thanks for letting me know!
This is the only video that helps find the right capacitor without reading the old one. The technician replaced the capacitor on a Sunday and charged us 250 dollars. Later on I figured out with wrong capacitor spec because one month later one wire melted. I was not able to find the right capacitor recommended by the manufacturer in any website, manual or customer service. After reading on the compressor I was able to find the right one which is 45, different from the technician replaced 60! Thank you very much sir!!!!!
Honestly dont know how this channel isnt way bigger. You guys rock. Been in the trade 4 years and still learn stuff daily. Also like watching these as refresher.
I am glad that you appreciate the videos!
When you have an open mind to learn wisdom will abound. 😍
I bought your refrigerant charging and service procedure book. Thank you for all of your hard work and dedication! You are one of the coolest teachers ever! So clear and organized! Thank you friend! I have learned so much from you!
I am so glad that you enjoyed that book, thanks!
I love the new way you run through these new videos. It’s a lot easier to follow and learn from
Awesome, thanks Josh!
This is one of the most thorough and well produced videos on understanding and finding your A/C unit's capacitor ratings I've found on YT. Thank you so much for your clarity and attention to detail, and I will continue to follow for more videos like this.
Thanks for watching!
My AC has been out for 3 years. My landlord has not yet fixed it. This may be the most valuable video I've found in a long time. High's in the 90's coming up next week. Thank you sir!!
Thanks my man. You taught me a very important idea on finding the right type capacitor. Never use higher mfd type. I always thought just a little higher wouldn't hurt. Learned my lesson. Thanks again
This video was amazing, as my capacitor was very rusty and I could only see it was a York with ??+5 MFD. In my heat pump I couldn't see the compressor's MFD rating (looks like the compressor was in some sort of jacket, not sure). After discharging and trying to read the capacitor with my multi-meter it showed 20MFD (that seemed too low, I expected 35+). I then decided to give up and just put back the old capacitor which was still working, ... wait for the face palm moment ... I struggled a bit trying to get the screw that holds the capacitor in and what do I see ... a 50 + 5 MFD in sharpie! Appreciate the video you made and whomever had the comment about inking the capacitor rating with a sharpie, whoever did that for my HVAC system absolutely saved me.
Thank you so much! The guy that serviced my ac decided to replace my capacitor because it may fail soon. He didn’t have the exact replacement so he installed one of a slightly higher rating and left with my original. Now I want to have a spare but know way of knowing what was the original. Thanks to this video I am now able to buy one with the exact ratings
Awesome Lincoln!
Thanks again. I've struggled with people putting in wrong caps mfd in units and customer tells me that fan was replaced a year or two ago, only to find out that they have gone to Higher mfd and caused the start winding to get damaged over time. After my first experience the customer texted me from time to time that the unit fan is still doing good after five years. Ty again for your videos and advice.
When the temp is about to hit over 100 and your ac goes bad and your tech is recovering from heat stroke you came in clutch with the video
I just bought your book Craig it’s going to arrive this week. Thanks for helping us new guys out dude your awesome 🙌🏾
Awesome Keith! Please let me know what you think of it after reading!
Thanks for stressing that the mfd rating is important and the voltage of a new run capacitor can be the stated voltage or a higher voltage. As a preference I always replaced with the exact mfd rating but always with a 440 voltage rating. With contactor replacing, I always replaced with a 40 amp. although the factory installed a 30 amp. Thanks for the excellent accurate videos.
Awesome, thanks!
Thank you for these videos. Im just recently getting back into HVAC installs after being a dad for 3 years. I missed it so much. So happy to be back. I'm being thrown into doing some service calls. These videos are helping me out so much. THANK YOU ❤️ Much love and respect to you.
You, Sir, are a scholar and a gentleman.
EXCELLENT video - great content and presentation. Exactly what I needed!
I appreciate it.
20k ohm resistor is also the same rating as a screwdriver btw
I though it was 0.0 ohms ha ha, I hear ya
Inasmuch as both accomplish the same end :-)
🤣🤣🤣
I noticed mi ac stared different and making weird noises and shoot down over heated, I inspected and found the capacitor terminals severely corroborated and the mf information missing, but thanks to your video, I purchase the correct capacitor and the ac is working fine.
Thanks and keep up the excellent videos.
love this channel,,,,already saved a ton of money doing it confidently by myself,,,thinking instead of being in the automotive trade, wish I had chosen HVAC
Your channel just popped up so I took a peek. Thanks for the info! As a guy who likes to fix stuff myself whenever possible, (worked on my elec furnace and my RV ac & I have basically no knowledge on subject) your channel resource might be of great help one day soon!
Thanks UncleMarks!
Proplay fixed repalced fan 7,5mfd
Wow you really make it so easy to find information on compressor. I enjoy every video you put out there. Thanks Craig
Thank you so much Fernando!
Once again an excellent and practical video.
Thanks for the effort in producing it.
Promotes clear and correct field useful decisions.
You are most welcome
35 mfd mico fraday
Every tip you give is helpful, thanks Craig
I am really glad they are useful!
@@acservicetechchannel ❤🥂
great content, what if the fan writings are worn off? I got the first number and the cap. Just need the fan? do you just guess on that? it is a small fan so i will assume a 5
try a 5 and 7.5, see which draws lowest current and go with that
Great videos!!!! If a start capacitor in a package unit is replaced. Does the new capacitor need time to charge once the power is turned back on or is does it charge instantly as the power is put back on?
Craig is an AC guru.
Thanks so much.
Awesome video! I have the exact situation or a completely rusted and illegible capacitor. Found the fan rating no problem on the fan plate but not able to find compressor rating. It is not on compressor plate and I can't find online likely because the model is out of production is my guess since old refrigerant. It is a Copeland CR26KF-PFV-130 compressor. Do you happen to have the manual for that one so I can look up capacitor size?
I sadly report I went to RSI in 2000 and worked at a school district , I was hired by a RSI prior grad and work
there for 10yrs. I have learned more about (why it failed) here than from either prior training areas if you will
Thanks . I am now 7 yrs retired and still learnin
This is very helpful ,couldn’t find any information while trying to rebuild a bench grinder .thanks a lot it really helped me out!
You are awesome, I hope I can gain the knowledge you possess some day. I have learned a lot from you, thank you.
You can do it!
Great information, thanks for doing these videos.
I appreciate it!
Great Vid !! I used your method to find out what my AC called for, and as luck would have it my Cap. was replaced by AC Tech. approx. 2 years ago with a 55/7.5 cap.-when I took a picture on compressor like you said it called for a (50 not a 55) is it safe or should I replace it ? the fan rating was correct at 7.5 Thanks in Advance !
10 percent higher or lower is ok
Great video!!! I looked in a condenser unit and it had a dual cap with a 60 MFD herm. Looking on repair clinic the model showed it should use a 30 MFD. The 60 MFD was out of spec but must have been in this unit for years. Should I replace with the 30 MFD? I did not look on the unit itself but need to do that too to see if the MFD is noted on the compressor. Trane model TTD760B100A2. Thanks!!
Appreciate the detail & plain explanations you offer. Thanks for all you do.
My pleasure!
So does the rated capacity for the capacitor always match between fan and compressor? If not which one do you use?
Well done video but it's incorrect at 1:20. Oversize does not burn windings. Oversize can cause relay chatter, wear or weldment on contacts. Undersize reduces starting torque. 10% deviation is allowable. Any information on substitution? There's that call downtime will cost money or product, but I have a truck with assorted spares.
Higher or lower than specified MFR run cap will increase run winding current, increased current reduces efficiency (cost $$), increases heat and reduces lifetime.
@@dan4091 Thank you for your answer.
you are confused; "relay chatter" refers to the coil on the LOW VOLTAGE side of relays and is caused by LOW VOLTAGE. Impossible for relay chatter to be effected by the side being switched on or off, it can only be effected by the switching circuit that energizes the coil that thrusts the set of contacts closed or open
@@patrickhutchins6935 In capacitor start motors, relays are line voltage. In capacitive circuits current leads voltage. Capacitance reactance of a capacitor in ac circuits plus motor impedance are factors to balance for enough current to provide starting torque. Too small a capacitor and there's insufficient "boost" for starting, and too large there's a mismatch capacitive reactance with varying voltage effects that can cause relay cycling and points heating. Not always noticeable at first, but it does exist. For reference check into the RSES SAMS Manual for further reading.
Another good tip is to check the compressor / fan labels, and make sure the right capacitors are already installed. ...seen this mismatched before!!
I was taught ac's the hands on OJT method likecalot if other guys in my trade but alotta guys that were taught the same way. 1 of the things I've always heard about replacing a capacitor is, it's safe to replace a capacitor with a capacitor that's no more than 5mfd higher but never lower. Is this true or was I told wrong. I truly do respect you and value all your teachers n love watching all you tutorials. Keep em coming!!!👍😎💯💯💯
Are there blower capacitors to check in the FAU? I get outdoor fan and compressor action but no airflow from ducts.
Thanks for passing on the knowledge, much appreciated.
Thank you for this im so confused about the capacitor and fan motor.
What happens if you encounter an old package unit in a mobile home park, and rating plate for compressor is not readable, in addition to an unreadable rating plate on the cabinet itself? How do I find an MFD spec for compressor?
Wow I had no idea you could do that. Thanks man, that's very useful!
Absolutely, dig and learn more and more, thanks!
Excellent info, this is exactly what I was looking for! Thank you.
Thank you! Can you be off by +-1% on the microfarads?
thanks, Craig!!!!! your awesome man!!!!!.
Glad to help Jimbola77! I hope the driving is going well!
You’re the Tony hawk of hvac
😆you hit the nail with this comment 😀
Ha Ha, not the first time someone said I look like him, nice!
lol he kinda look like him a little bit as well
Agreed he knows his shit!
Thanks so much for the help. I was servicing my unit and saw that my cap was completely rusted, but still working. Got the readings now so I can replace later. Mine reads 28.9 and 5.1. Would that be a 30 + 5? Thanks
Rule of thumb ive always used for the last 10 years is (tonnage x10)+15 = Hermetic. If you're in a pinch you can go up 5 down 0. Better than 99% chance those two rules will get you in the clear.
my 3 ton uses 55uF, so no, don't trust that. if unsure it's better to try several cap values and pick the one that gives the lowest run winding current.
@@dan4091 Congrats on being the 1%. Although with that rule a 45 would still be within 20% needed for guaranteed start. But using the manufacturer's specified from the unit parts list is the most correct.
You can also call the supplier order one by model. Use it to replace the one you use next time in supplier.
Craig you always on point! Thanks!
My pleasure!
💪actually I never thought of this. nice video
Thanks a lot!
Bought a house and wanted to ensure what I had was the right size versus 'generic tech 60000' putting in what they had on site.
Found this video, super helpful to ensure versus validating on the cap sticker. Thanks!
I love your videos...I have a 26-year-old Lenox 3.5-ton system with a scroll compressor, do you know if these scroll compressors are still available?
Or is there a substitute compressor available?
I've never understood why the capacitor size is not standard information that is required to be on the data plate by ALL manufacturers. that is one of the most important pieces of information you need to know when working on a unit. Why would that not be on the data plate. It makes no sense.
There needs to be some form standardization in the HVAC industry!
it seems that it would require an additional rating plate specific to that unit model. Maybe they dont want to do that so in case the compressor or fan motor is switched out with another version with different cap size, techs wont get confused. It would be nice though!
I’d be happy if they would just stop using the data tags that fade away after being in the sun for 8-10 years. Do think I wouldn’t buy a unit if they charged .50 or 1.00 more per unit and went back to stainless steel data plates. It’s just one of those pet peeves that makes me crazy.
@@speckulator7516 have you seen Trane RTU drawings? They are barely legible from the factory nowadays and fade faster than the damn nameplates! What a joke 🤦♂️
@@jman0870 no I haven’t Jman. And it sounds like I don’t want to see them.
Thanks Craig! I love it!
Marcus, glad you enjoyed it!
I got questions about Honeywell t-stat pro series . I turn on for cooling but the heat comes on . Is this t -stat issues it’s a heat pump
check on the dip switch on the back of the tstat to make sure it is set for furnace and ac instead of heat pump if that is the type of system you have, thanks!
You need to wire for Heat Pump versus ELECTRIC HEAT use most likely O in tstat terminal. Instead of W
If your Heat pump Energizes on Cooling use O terminal if Energize on Heat use B terminal instead and do not Confuse it with Common blue wire😁
@@renecuevas4128 thanks for your help
@@acservicetechchannel thanks for your help
Thank you Craig I love your channel.
I appreciate that!
Thanks for another great video. Keep up the great work!
I wonder if their is an equation to figure what capacitor is needed if there are no model numbers on the unit. Like if you know the FLA and voltage could you figure what capacitor is needed?
Yes, take FLA and times that by 2650 then divide that number by voltage needed to run the compressor.
That will give you the exact information u are looking for.
Its a great question u asked and I’m going thru the comment section to see if Craig has addressed this.
He is the best in the business and I’m a little surprised he did not address this formula in the video clip.
If my compressor is currently using an oval capacitor, can I change out to a round capacitor that meets the volt/MFD ratings?
Well done, brother! God bless!
May the Lord Bless you too!
Excellent. Fast and to the point. 😊
Glad it was helpful!
I ran into a scenario where the mfd was 7.5 with a +-6%.
Does the +- matter when changing out capacitors? Is there a video explaining it
It's very simple - run the motor with different value capacitors, use the capacitor that draws the lowest amps. (for motor run capacitors - not start capacitors).
Great idea in theory and maybe completely correct but kind of impractical unless you have a dozen or so capacitors lying around right? And no DIY will have that.
@@condor5635 That's when you make friends with the guy that works in the electric motor repair shop.
@@paulsawczyc5019 who has time for that ? Lmao
very informative and educative stuffs here! thanks for sharing your knowledge with us!
Thx for your videos I have a question sir How to find rpm if you can't read it on an outside motor
I been do it trying a regular 1075 first and if I feel vibration or noisy fan motor just swap it to a low rpm and work for me but of course it's a wasting time please give me and idea if there is another way to find the rpm to do de right motor
Supply houses for the equipment is a good start.
Your video always comes in handy
Thank you
Thanks Romarro!
I wish I had found this video sooner, anyway great info. A+++
Thanks for watching! I'm so glad to hear your found the video helpful!
This helped immensely, thank you!
You're welcome!
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Very useful information! Thank you for sharing
So nice of you
Can you make a review and size comparison on that dl489 you have
What setting on your volt meter dud you use to find capacitance? I have a fluke and no setting shows uf
You may not have that setting unless it is an hvacr multimeter. The setting may be missing, thanks!
@@acservicetechchannel I was able to track it down. Had to turn it to the symbol for diode DC which also has the symbol for capacitor by it, then switch the setting to find correct range. Unfortunately my capacitor read 0 uf between all prongs. Motor only shows 5 mfd and 370v. Compressor has no uf rating on it. Referenced another HVAC site against my Lennox model # and found that it was 35uf. Hopefully its right!
great service tip(s)
Thanks again for the helpful videos.
Excellent video !
Awesome video. You were the best.
Wow, thanks!
Thank you, this is very helpful information.
Glad it was helpful!
What if my AC unit has 2 capacitors? one is only for the fan, but can I replace the main capacitor with one that can also run the fan motor or do I always have to have 2 capacitors?
Thank you so much for this video! You helped explain so much for me.
Glad it was helpful!
Is there a brand of capacitor that you prefer over others.
A 50/5 uF capacitor will not work in replacement of a 45/5 uF ?
My unit has been running 3 yrs now the slightly larger capacitor.
Should I put a 45/5 uF back in?
Wait, in the second scenario when did you figure out the rating for the fan?
TH-cam is great. Thank you Sir
Most welcome
What about the smaller compressor how would you know for example freezer
Thank u, very detailed video and important
Excelente tip ! Thank you.
Thanks Carlos!
I just got an old window air conditioner running. 38 years old looks like. Electrohome by Keeprite model A601A00
I suspected the capacitor as the blower motor started but the compressor relay/contact was clicking every few seconds and eventually the compressor would start. I expected to have to replace the cap but after removing the wires, I noted a lot of corrosion. Some of the blades were corroded away completely. I took the cap to my wire wheel then scraped the contacts cleaner with a sharp knife. I tested with an analog multi-meter and got decent responses and no shorting to ground. Because the blades were so corroded, I used pliers to squeeze the wire push on contacts a bit to make a tight fit. I put some dielectric grease on the blades to prevent further corrosion. It seem to be running well now, though the thermostat is wanked. I managed to rework the thermostat so it functions, but not as it was designed.
Your video was helpful. From factory the micro farad figures were blurred and can not be read. The cap is a JARD. The blower motor does not mention the capacitor and the label on the compressor is behind where I can not read it 😞
I followed your example using my digital multi meter and got 14.75 and 3.97. Does this mean I would need a 15 and 5 capacitor if when this one fails?
Any idea where I could get a new thermostat?
Cool stuff ! Great vids!
Thanks for the visit
What is the +-6 for? If my current one is +-6 can I replace it with one that is +-5? It has the correct uf and volt.
Did you find the answer?
Nice job and video like always
I appreciate that
does the numbers on central air fan show what capacitor i need
Never knew that, good information
Thanks for watching!
Great points ... not always clear.
Great information.
Thanks for watching!
Ty for the info. Good stuff!
If the label is worn off...
1. Take Amps reading from HERM
2. Multiply by 2562= ?
3. Then check voltage from Common to HERM and divide it by the answer from step 2.
This will give you capacitor rating under load.
Don't you mean 2652 ?
great info I often wondered about this
Thanks for watching!
I have the below aircon Goodman GSX140301KB. The capacitor is bad is this: CAP050400440CT. I see another: CAP050450440CT. The difference is the 450 vs 400CT. Can I use the 450 one?
Hi I have a CBB65B capacitor can I use CBB65 capacitor?