AC Contactor Not Pulling In - 10 Reasons Why
HTML-код
- Опубликовано: 3 июн 2024
- Is your AC contactor not pulling in the plunger? Is the contactor coil not getting 24v? In this video I go over 10 possible reasons why your contactor may not be pulling in. If you want more info or other troubleshooting videos similar to this one, check out my AC Fixing Playlist:
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
➡️ How to Install a Contactor:
• How to Replace a Conta...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
For More Repair Videos:
🔌 Dryer Repair Playlist:
• Dryer Playlist
🧺 Washer Repair Playlist:
• Washer Playlist
🔥 Furnace Repair Playlist:
• Furnace Playlist
❄️ AC Repair Playlist:
• Air Conditioner Playlist
💧 Water Heater Playlist:
• Water Heater Playlist
🛠️ HVAC Tools Playlist:
• HVAC Tools
🔋 Capacitor Playlist:
• Capacitor Playlist
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
📝 AC Parts Reference List:
1 Pole 30 Amp Contactor: amzn.to/2tdICNB
2 Pole 30 Amp Contactor: amzn.to/2JWlI7Z
SPP6 Hard Start Kit: amzn.to/2JSPieo
30+5 MFD Capacitor: amzn.to/2M4M83O
35+5 MFD Capacitor: amzn.to/2JXTVUs
40+5 MFD Capacitor: amzn.to/2yrugyr
45+5 MFD Capacitor: amzn.to/2MG8ZDY
50+5 MFD Capacitor: amzn.to/2M7RFGY
Qwiklug Compressor Wire Repair Kit: amzn.to/2JWmsdh
3 Amp Fuses: amzn.to/2JViUYO
1/4 HP Blower Motor: amzn.to/2tfifXT
1/3 HP Blower Motor: amzn.to/2K63HQL
1/2 HP Blower Motor: amzn.to/2trGVeM
3/4 HP Blower Motor: amzn.to/2tqsKGX
FM55 Blower Motor Bracket: amzn.to/2MbdYeK
5 MFD Capacitor: amzn.to/2K5NcHn
10 MFD Capacitor: amzn.to/2tqP7ft
15 MFD Capacitor: amzn.to/2MJZzHU
30 Amp Disconnect Fuses: amzn.to/2JYcSGH
25 Amp Disconnect Fuses: amzn.to/2tgcJUC
20 Amp Disconnect Fuses: amzn.to/2tcEFsM
🛠️ Refrigeration/Air Conditioner Tools:
R22 and R410 Refrigerant Gauges: amzn.to/2uM1GDx
High Side Replacement Gauge: amzn.to/2x6rIlo
Low Side Replacement Gauge: amzn.to/2x9SskK
R410a Refrigerant 25lb: amzn.to/2p2PACx
Refrigeration Wrench With Hex Bit: amzn.to/2uM1MuT
Tube Cutter 1/4-inch to 1-1/8-inch: amzn.to/2OdRbQX
Tube Cutter 1/4-inch to 2-5/8-inch: amzn.to/2CLUYnj
SuperCool Slide Rule: amzn.to/2QdbcZx
Ball Valve Refrigerant Hose Set: amzn.to/2wSbETX
Low Loss Refrigerant Hose Set: amzn.to/2wQazfy
HVAC Fish Scale: amzn.to/2oRyI1O
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
🛒 For a Complete List of Tools and Parts Visit my Amazon Page:
amzn.to/2Q3QTOA
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
🅿️ If you want to support the channel:
paypal.me/WordofAdviceTV
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
📷 Interested in What Gear I use to Film my Videos?
Sony A6300 16-50mm:
amzn.to/2OmLSPF
Sony 35mm Fixed Lense:
amzn.to/2LPAU3A
Extra Batteries:
amzn.to/3c8QBj1
Memory Card (2):
amzn.to/34rcwQ1
60" Tripod:
amzn.to/2mLXrU0
Bird-Eye View Tripod:
amzn.to/3b3RWYy
Rode VideoMicro Microphone:
amzn.to/2Ol9KDp
Rode Wireless Go Microphone:
amzn.to/3ed5Wkv
Neewer Halo Light (2):
amzn.to/2LTANUK
Viltrox LED Light Panel:
amzn.to/39ZbSu4
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
🙏 We would greatly appreciate it if you considered supporting our channel while shopping on Amazon by buying anything you need on Amazon after clicking on one of the links above. This gives us a small commission at no additional cost to you and helps us continue producing more videos! Thanks a million for your support!!
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
⚠️ Disclaimer:
This video is for educational purposes. All appliance and HVAC repair work should be done by a trained professional. Word of Advice TV is not responsible for any possible damages or injuries caused by the use or misuse of the provided information.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
📥 SPONSORS / Collabs:
Would you like to partner with Word of Advice TV? 🤝
Email: WordofAdviceTV@gmail.com ✍️
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
#wordofadvicetv #furnace #heating #hvac #airconditioner #airconditioning
Great video and tips! My AC compressor fan stopped working so I replaced the start capacitor since it is an inexpensive part and the existing capacitor was over 10 years old and the top was rusty. While I was in there I cleaned up the wires and checked for any damaged wires, but everything looked good. The fan still didn't work. I spun the fan manually with a wooden dowel to make sure it spun freely, and it seemed fine. I depressed the plunger on the ac contactor and the fan started with no problem. I went back to your wonderful library of HVAC videos to find more info about the AC contactor which suggested to watch this video. Glad I did! You mentioned replacing the batteries in the thermostat even though the display is working AND there was no low battery indicator. Sure enough, I replaced the batteries and the AC compressor fan turned on! I've got a better understanding of my HVAC system, I've got a new start capacitor so shouldn't have to worry about it for another decade, I cleaned up the wiring, and I now know that a pair of fresh batteries can make the difference! Thanks for your great how-to videos!
I work a for hotel we have over 300 units on property from 2 ton to 7 ton this playlist has saved my boss lots of money and got me a promotion
Same here resort hotel with 100 units!!
I'm really hoping you see this comment.
I moved into my home 13 years ago. The first thing I had to do was call an HVAC guy out to charge the system because it wasn't cooling. Over the past 13 years I've replaced the A/C capacitor several times, the furnace heat sequencer several times, the thermostat, fatigued and broken wires and last year the fan motor in the A/C. Every other year, sometimes more often, I was having to fix something. At the end of last season my evaporator coil was freezing up so I figured I'd have to have the system charged again this spring. I procrastinated and didn't do it and then it got hot. I thought about it and decided I was tired of working on it and always worrying whether this 35 year old system was going to heat this winter or cool this summer. I decided to replace the whole system. Being retired and living on a fixed income I found the cost to be prohibitive. Fortunately, I've always been a big time DIYer. Plumbing, electrical, building, renovating... there was never a job I wouldn't tackle. I decided to order a new system and install it myself. Doing it myself would save me about $10,000. The equipment arrived on Tuesday and I had it all installed by Thursday. Friday and Saturday were spent trouble shooting trying to make it work. I watched countless videos on RUclips looking for helpful information. Blurry, shaky, poor audio, poor explanations, no explanations, incomplete explanations and inconsistent explanations. Thirty minute videos spending the first twenty minutes explaining what they are going to explain to me. Suffering through them all hoping to find ten seconds of useful helpful information. Occasionally I found it, but it was never enough. I know most of these people are trying to share and help, but I would certainly not enjoy being trained by any of them. Then I found you. It was your A/C, furnace and thermostat videos that got me over the hump. Clear and concise with simple yet detailed explanations. How to wire this and how to test that. After three weeks of killing heat I am finally cool. The job turned out to be a lot bigger and more difficult than I expected and pushing seventy years old didn't help, but thanks to you I got it done. Thank you for taking the time to share your knowledge and for doing it so well. I don't subscribe to many channels, but you just got added to my short list.
My AC repair guy was charging $1200 to fix my issue, after watching this video I ordered a new contactor for $18 on amazon and fixed it myself. Thanks a ton you saved me a lot of money!!! It’s worth noting I’ve never worked on ACs before
This is why nobody trusts HVAC companies. $1200 to replace a $10 part in 15 minutes?
THANK YOU!
You saved me a very expensive service call. My AC wasn't cooling and I followed your instructions. The condenser and compressor would not come on. I found a cut 24v signal wire from the control board to the compressor solenoid. In my case the 24v signal wire cable is routed under the crawl space of the house and comes out at the back of the house to the Condenser/Compressor unit. Well, the cut/broken wire...that bugger, was severed exactly where it came out from under the house. That said, it was difficult to locate because in the first place because I had inspected the cable and found nothing wrong. I was almost at the end of my patience when my mind told me to tug on the cable where it came through the wall to the condenser unit. Well, as soon as I tug on the cable the compressor/fan came on immediately and ran like a charm. I ended up soldering the broken White signal wire. So, just wanna say thanks again for your suggestions. Lesson learned: never give up when you think you're stumped. Just take a break from the task and come back later and give it another try.
You're the PRO ..! and I'd like to say thank you for showing the world some basic things to troubleshoot central AC units. Handyman like myself love to watch your shows..!
This video saved my a$$. I went through all 10 steps. After trying everything, I finally went into the attic, found the correct unit (there were two), and opened up the panel with the fan controller, and sure enough just like the video mentions, discovered a shorted fuse! I replaced the fuse, switched the breaker back ON, and the outside fan shortly kicked back on! Dude, thank you so much!!! You saved me a ton of $$$$.
general amintenance for 8 yrs and this video has to be one of the best videos on youtube. listen carefully and take notes and you WILL fix the contactor not pulling
Amazing video. I simply replaced my batteries in the thermostat and got my ac unit working. I'm a residential electrician and my immediate first thought was going to find the problem outside, particularly the contactor, but watching the video before I ran outside I saved myself money and time. I had no idea the thermostat had AA batteries, changed those out and now I'm back up and running. Thank you, liked and subscribed
You're a residential electrician and had no idea that thermostats had AA Batteries?
@@jroberts3428 Took the words out of my.....
Thorough video that got my unit up and running for less than $60 bucks and done TODAY with no waiting. With everyone working from home, this was a lifesaver. Kind Thanks, from this Novice
Thank you for all you do, you have saved me from calling a contractor and a whole weeks worth of waiting for him to show up. Again, a big "THANK YOU"Jay.
you are a God of youtube DIY videos... thank you and may God bless you. i stoped on # 2 of this video. the water limit switch wasnot triggered by water but by builded up rust from the water that collected and evaporated....thus leaving rust and calcium build up that triggered the water limit switch in the drip pan. people check all the minor stuff befre you spend $200 on a service call. thanks again brah!!!!
Thank you so much for these. I diagnosed a control board issue last fall and today diagnosed a short in the thermostat wire. Your explanations have given me so much confidence.
Thank you. Learned a lot. Will troubleshoot my ac over the weekend now.
I just got a quote of 5600 because i needed a new unit... It was the low/ high capacitor switch. I cannot thank you enough!
Absolutely nailed it, Jay. I am one of those people that jumped at the contactor and ordered one, without watching
this video. Turns out when I checked the thermostat wires, had 24 vac, up until they connected with the delay on break timer. At the contactor 24 volt side was getting all kinds of wacky readings.. Ordered new delay timer as well. Thanks to your videos, $31 probably saved me thousands! Props to you! Oh as a side note, also ordered a dual run capacitor as a backup since its been high 80's for over a week her in Fl.
Was your problem the contactor or thermostat wires,
Thank you buddy.. I am a plumber by trade and knew nothing about hvac until watching a few of your videos. My outdoor ac unit fan was not spinning when thermostat turned on. Actually wound up being the 5amp fuse on the control board at furnace under home
As someone who's currently in an Apprentice program for HVAC, your videos have been so helpful.
Your the best channel I’ve found on the content you offer, very simple, but thorough, friendly and no drama! Great 👍 work. Thank you for the time you give of yourself.
After watching this video, I got my AC back running. Thank you
Dude, great job walking through all of those issues, I learned more in this one video than the last 20 I've relectantly sat through. Thanks!
Thank step 3 help me and fixed . Some reason my thermostat jumper gone. I put new one I connected with RC then problems solved BIG CREDIT TO THIS VIDEO OWNER. THANK ALOT.
You are by far the best source of info I've came across. You should teach people, very easy to understand. You helped me diagnose an issue with my jumper between RH and RC on a Honey well zone board. The factory jumper was smaller gauge than the 8/18 wire i was using and causing intermittent contact. Pulled out OE jumper and made one with wire, fits tight and works as it should. Thank you.
Thank you so much !!!! This is the most informative AC video I've ever seen. Your comment about a weed wacker getting to the 24V coil switch is exactly what happened! I didn't even finish watching the video because it was a quick check and you saved me a bunch of money!! Thanks so much! Liked and subscribed!
Truly an incredible video. After watching several different videos on the net I watched 2 of yours and was able to diagnose and solve my problems. THANK YOU SO MUCH.
By far the most educational advice . Strait to the point. Awesome instructor. Eliminates all guesswork.
Thank you so much. A guide for all.
The contactor switch was not pulling in, and before I replaced the contactor, I decided to watch this video. I glad I did because number 8 was the problem! The high pressure switch tripped and I just needed to reset it by pushing the red button. Now I just need to figure out why it tripped. But this guy makes the best vids on AC that I have seen!
You are awesome! I am constantly trying to gain understanding of how the AC system works and you just lay it out. I would love to see an overall video from start to finish of the workings of the system including; sensors, switches, wires and what they power and where they go. Keep up the good work for us novice people out there.
Covering alot of equipment parts with sufficient information for quick understanding and preventing expensive tech bills. Thank you!
You just saved me $1000, your HVAC videos are the BEST on the internet, you Sir, are a ROCKSTAR!
Dude. Thank you! Traced down that my low voltage wire to the compressor wasn’t getting 24v from the circuit board.
Jumped R and Y on my thermostat and the compressor kicked on instantly. Thank you thank you thank you!
Saves me hundreds of dollars. My condenser unit is not receiving 24v. I always suspected it's the thermostat but I don't want to replace it without knowing why. Your thermostat bypass video saves the day. Thanks!
Subscribed
I watched several of your videos and thanks to you now have a good grasp on how HVAC systems function. I narrowed down the problem to the contactor coil not getting power or pulling. After checking all of the 10 reasons mentioned in this video and still not getting power to the contactor coil I went back to searching on line and found another video with a much simpler solution. My thermostat has a separate fan switch that can be set to "On" or "Auto". A house guest must have been warm ( I keep it set to 77 deg) and set the switch to On which for some reason stops 24v power from being sent to the contactor even if the system is set to cool. When I switched it to Auto the compressor started up and everything works. I wanted to share that just in case someone else had an issue with warm house guests. BTW, thank you for posting these great videos.
Thanks for the tip on the auto setting preventing 24V from going to contactor. I had the same issue during troubleshooting. These are great well-made videos!
Had my AC go out over the weekend in the summer in South Ga and was able to troubleshoot and fix the issue with your video. One of the best videos I have seen. Thanks!
You are THE MAN!!!!!!!!!!! I received a $3,700 quote to replace my unit that was "too far beyond repair"......$28 capacitor, then worked through finally figuring out how to use the multi-meter I've had for a decade to find the high pressure switch needed reset after cleaning the coil. Words cannot describe how grateful I am that you are on RUclips!!!!!!!!!! THANK YOU!!!
Thank you! You are doing a great service for anyone wanting to get up to speed on how our air conditioning systems work.
Thanks wanted to know if you know any good heating/cooling company foe training beginners looking for goodjurnyman to work under ,carlos from det MI
Very knowledgeable bro.mostly more b.s and one tracked mind a-c mechanics.. Dispatch to rip off and change parts for no reason.. But you know what you talking about.. Very good. God bless you bro. You are honest.
mine started working after replacing the thermostat battery. Excellent info in this video!
Thanks
Replaced outside capacitor for s&g when my blower motor was actually bad. Then outside unit stoped working. Thought I messed up the simple install
Found the plunger not going in and followed this video
Discovered I broke the common wire on the inside control board when removing the motor. Repair complete! Thanks
This is a fantastic video that I come back to every couple of years when I'm troubleshooting AC at home. Thanks a million for making such a useful video!
Outstanding video. You have a knack for explaining at a pace which makes your videos very watchable and informative. Keep up the good work.
Thanks Jay. My Carrier shut down during 95 plus heat--I thought the capacitor was shot. But after opening the panel I found the Contactor wasn't pulling in. After watching your RUclips show I checked the indoor blower in the attick and YES--too much water in the condenser pan; the safety float was up, shutting down the outdoor unit (just as you said it would) Naturally I took credit and my wife thinks i'm a genius.
Hey Jay, hope your having a great week! You sound like you are on a show on tv bro, Your very well spoken yet easy to understand. Great job thank you sir! Blessings
Thanks David!
he is very fluent
@@WordofAdviceTV wouldn't it be nice to have a wire diagram for the switch from the disconnect to the relay contacter to the compressor and then the fan ? Nordyne and ( Miller stopped putting the diagram out there ( mobile home central air unit with furnace inside ) what a joke these companies were. , I say were because they changed hands in the last 15 years at least 12 times
Great job!!! excellent explanation. Very professional tech you are. Thanks for doing this.
Excellent video!! Very thorough on the explanation of what signals cause the contactor to engage and what can cause it Not to engage. One other thing that can potentially cause it not to engage and this falls under 'Bad Wiring'-- if the wiring (or connectors) are corroded or partially broken such that it can't carry enough current to magnetize the coil enough to pull the plunger. You could still read 24-27V on the line but it may not be able to carry enough current because it's compromised. I ran into this personally last week. 😝
Mark I seen that exact situation, contactor works when connected straight to the 24v transformer and signal line reads 24v outside at the contactor but contactor still does not pull in
Jay, you are the man! Thank you so much for all your videos. You saved me numerous times. Saving me both time and money. I had no idea that the float switch would affect the condenser.
Thank you so much, was able to figure out that the condensate pump wasn't wired correctly so the condenser wasn't turning on. 10 out of 10 would recommend, keep up the great work man
Dude! You rock! I watched the start of your video where yoy said the contactor might not be broken. So I started watching this and suddenly remembered I had switched off the AC at the thermostat so I could run the fan. Turned it to AC and the contactor popped In and the new motor is running flawlessly!!! House feels cooler already, and it is 101 degrees today in San Antonio. THANK YOU SO MUCH! ❤️
Brand new tech in Vegas and I just wanted to say thanks for the content you are really helping me get laced up with dextamental information! You helped me get through school as well.
Hey bro! Love the knowledge & the breakdown simplified
Its always something we think we cant or shouldnt do but you named a few here that i didnt check.
Thanks for the AC tutorial. Was able to diagnose my problem to a bad thermostat wire. Mouse must have gotten to it over the winter. You saved me time and money. Thanks again.
Very informative, helpful for maintenance and troubleshooting. Much appreciated.
This channel is awesome for learning how to troubleshoot.
Great work, great attitude, great presentation, greato human being, great presentation, great personality, great information, Thank you, Thank you and thank you!
Thank you so much for easy teaching those "10 Reasons Why AC Contactor Not Pulling In".
You're welcome! Thanks for watching!
Jay: You are one of a kind not many tech go into details like you do thanks for AC advise.
Dude! I've fixed a thing or two and already knew I had 24V outside. I was about to head out for a contactor but thought about your video for a few. Realized I couldn't see plunger. Went back out, pulled the cap and there it was, an earwig stuck right in the spring. Thank you!!
Awesome! Glad to hear the video helped! Stay cool! :)
Best presentation of useful easy to understand advice on HVAC issues. Mahalo Jay
Good job....My problem was a contractor that was stuck in. After looking at it, it was welded together. Hope it did not hurt the system. It seems to be working fine now. I watched all you videos and they are a big help. You are the best. Thanks...! Al Sautner.
Thanks so much you are a lifesaver I was having the same trouble I put a new comparator on and mine still would not work but when you said that the batteries may be low on my thermostat I tried that and boom that fixed my problems but I got one of them 5ton old Goodman big old unit but it works about the same I think not much on A/C I'm a auto mechanic but it's not as hard to keep my air and heat going with your videos when the AC man came out he to look at it he told me a list of things it needs it just to get it back running 😢 and it be like 800 or 900 to get it up enough to find out what else id need I can't afford that id just as soon to put a all new unit in but with your help I did it myself.
Thanks for all the videos. Im in HVACR school and your videos have been a tremendous help. You should teach an HVACR class at your local community College.
Good tips on why contactor is not engaging.
Awesome advise you helped me troubleshoot and fix my AC. I never knew there was a fuse on the FAU side! Thanks!!
Amazing young HVAC professional I have never seen before..
#11 if you want to add it? Probably less common? My older 1996 Carrier system has a Time Delay board just below the two-pole contactor. After going through your list and even took a chance and replaced some parts, I had to call in a pro. He retried a few of the diagnostic tests I did and quickly made his way to the time delay board and determined that was the problem. In just 5 minutes a new time delay was installed, set to 5 minutes, and we were up and running normal again. $157 total for the job. $90 for the visit and the rest was the part and install labor and taxes. Thanks for you video! Even though it didn't correct my issue I enjoyed tinkering around and swapping out parts, namely the contactor which I learned, even though it has a single plunger it was still a two pole contactor and relaced the two capacitors as well.
Thank you very much for your video’s. This one helped me diagnose a wiring problem. I ran new 50 ft control wire from the air handler to the heat pump. My unit is back up and running good.
What's up youngster once again great job on the videos, you've helped me fixed my A/C, both replace the blower motor and troubleshoot the capacitors. Thank you big man it is much appreciated.
Good tips! Woke up to no power in the house (which came back on shortly later), 58F indoor temps. Checked the thermostat and it clicked, but nothing happened with the heat pump. After checking the voltage on the outside unit, I thought about you saying that the fan should blow and ours wasn't. I thought it might be the condensate line being full, but it was empty. Then I moved on to the disconnect fuse for the air handler and turns out one of the 60A 250V fuses were blown. The emergency heat has been working overtime and I think it finally took the old fuse out. $16 later I'm back in business. I'll make sure to give the unit a break. It's been unseasonably cold with the arctic blast of Christmas 2022!
Thank you, your videos sure help me diagnose and fix my units...
ThAnks for your advice that is a great help.God bless you.
These videos are the best. Thanks so much! I was able to use this to troubleshoot and fix my AC on one of the hottest days when all of the service technicians were booked up. Cheers!
Thanks karl elvis
I am now retired from about 30 years from ac services or residential maintenance and could not have been explained better than that from a hands on perspective
I went to Lincoln tech for HVAC an 11 months course and I learned more from you! Lol.. seriously
Thanks a ton for the multiple videos on detecting issues with the ac. I was able to go from not knowing a thing to understanding the wiring for my HVAC, furnace, thermostat and the ac outside unit. My nest thermostat showed error E103, with over current on Y1 wire. I ended up replacing the contactor. And, everything is working great so far. One difference in my observation is that I observed 0 volts between the contacts that activate the contactor instead of 24V as suggested by you. I went around checking everything inside the house, before deciding to try and change the contactor. I checked on raw wire by removing the wire nuts as well as on the contactor fins. Nevertheless I learnt a lot, so many thanks!!
I live in Tucson AZ. My dog chewed low voltage wires. Spliced everything back no air. Would have never checked the fuse on unit had it not been for this video. Its 106 outside and I'm nice and cool now. My wife and kids don't have to stay at a hotel and I didn't have to call a service person. Thanks so much.
I'm happy to hear that! :) Thank you for coming back to leave a comment, stay cool!
Loved the video and all the explanations. Great tip on the Ants in the contactor. Just fixed my friends AC. Took the contactor apart, cleaned out the ants, put it back together and everything worked.
Thank you! after checking everything I tried pressing the High Pressure switch reset button and that clicked! I turned the power back on and after a while noticed that my AC Unit was back up and running! It's been storming on and off here in MN, so I'll need to go out and give the Coils a good spraying when it's clear out. Thanks for saving me from having to call it in!
Great Job...You are good teacher because we can understand and apply your knowledge. Thanks
Thank you so much.. You saved me big money on an AC tech visit. I replaced the compressor's capacitor, contactor, fan motor, AND the air exchanger's control board and transformer--none of it was solving the problem. Then I found this video. I was getting 30 V to the compressor, so as you said, the problem was at the compressor, and it ended up being the High Pressure Switch. Pushed that baby in and we're golden! At least I got some upgraded parts out of the whole affair, and I know a whole lot more about AC systems and electricity.
Between this and your other video I found my problem and learned a lot more about how to check in the future. #2 was my issue, overflow tripped.
Great video!! Thank you so much. I too watched two of your videos and found the low battery in my thermostat! You saved my life! Well, not really, but I don't like to sweat and my house was getting pretty hot so...
Good job, very detailed step by step explanations
You're the best youtuber in this field.
Please help me. Lol
My ac wouldn't turn on, but my blower inside is working. When I push the plunger in, it turns on, but when I let go, it shuts off. I replaced the capacitor, and now my ac is short cycling. On for about 10 seconds, then off. On, off, etc.
If you still have gas in it and no leaks I’d ohm out the compressor
Dude. Thank you for this video. All I had to do was change the batteries in my thermostat. I would never thought to change them because the thermostat was on.
Thank you. I was changing a thermostat and must have shorted a couple of wires. When i put the new thermostat on I got a blank screen. Fearing the worst i jumped into troubleshooting the outside unit. After watching A/C contactor not pulling 10 reasons why, i decided to check the fuse in the indoor unit. You saved me a lot of money. Not to mention this is my sister's business and Friday morning is her busiest day. Hopefully more diyers will run across your channel
Following your tutorials and by process of elimination figured out it was my Google Nest thermostat! Picked up a new one and presto! Cold air again. Thank you!
Thank you #4, I had bad thermostat wiring outside my house. Bought a tester and fixed it with your help so thank you very much.
Excellent channel! You helped me fix my AC!
I'm in school for HVACR and your videos really help me fill in the blanks. In fact this video helped me diagnose one of the units at school where the compressor wasn't coming on. It was a bad coil in the contactor. Other people tried all kind of things but I was the one who got the diagnosis right. Thank a bunch.
Hi J. I think you would be a very good AC instructor . I truly enjoy your videos. Thanks.
My man nailed it. Drain clogged and low thermostat batteries. Thank you so much!!
Thanks you so much for your thorough videos. You have blessed me and my family. My A/C is running because of I watched your video. You are a very smart A/C technician. I have decided to become a follower and see what else I can learn from you. 👍🏽🙏🏽
That was the most helpful video I can across the actually help me to fix my
What a excellent explanation thanks 🙏 for your videos
Excellent video, informative and easy to understand.
Thanks for your videos. I used this one and others to test many parts of my a/c system to (eventually) find out that the control board was wired improperly. The condenser wasn't getting voltage from the control board. Turns out, the "y" wire was in the "Y2" position on the board, and when switched to "Y1," the condenser started up right away when the thermostat called for cool.
I enjoy your video's ! Your not sluggish with your presentation , your quick and to the point , Awesome. Thank You !
Thanks Mark! Glad you like the videos! Thank you for commenting!
Thanks so much for the help. I thought it was going to be a tough component fix, and turned out to be a shorted pair in thermostat wire. I appreciate the orderly checklist though. Saved me a bundle
My ac just stopped working on the hottest day of the year. Thanks for saving us. I went through all your reasons and replaced the capacitor on my Lennox. That got the AC to the point where it would work, but only if the connector button was held. I thought maybe it was the thermostat or fuse or a connector. I discovered the furnace unit had a power interruption when the controller door was off (that took a while). I taped the power on, and checked for 24-27 volts at the controller and outside. Both showed power, still no automatic fan movement. Finally, I considered that my ac unit was older (probably 12 years old) and we had just moved into this house. The unit looked clean from the outside and down the centre, but when I opened up the sides of the unit, they looked like a clothing dryers lint screen. I cleaned the unit, found the high pressure switch (your reason #8) and reset. Problem solved. Thanks for posting this video....you are awesome
You are a natural at this. Great video and its SAVED for future referance! This is an odd one but you might know the answer and your Contactor comments got me thinking: I have a dual fuel Bryant system with a gas furnace and heat pump. My thermostat and wiring test perfectly so no problems there. Here is the issue: On a chilly morning, hovering around the set Balance Point of 35 degrees, I call for 5 degrees of heat. The heat pump comes on for a couple of minutes but then due to the higher call of 5 degrees the fossil fuel furnace kicks on which is to be expected. BUT the heat pump continues to run, or seems to be running, although I can't confirm if the compressor is on because i am in such a hurry to shut it all down! I know that these 2 units should not be running together and I know what this could do to my heat pump if I let it go on. I know from testing my stat that I am not sending 24V to the both units simultaneously, yet each work independently when testing. The odd thing is that if I call for just a degree or two the heat pump will start and stop properly but as I said, it will continue to run-on after the aux gas furnace fires up (with no power on the Y wire!). It makes my head want to explode. Are there any timer boards or timed relays in a heat pump that might be malfunctioning to allow this to happen? You might be the smartest guy I have ever seen on RUclips so if you don't I might have to walk down the street and just jump off that bridge :)
I liked the video and very good information. Great job, thank you!