If your outdoor AC unit isn’t turning on, it can cause the air conditioner to not be able to remove excess heat, limiting the amount of heat the refrigerant can absorb from inside the home. A dead capacitor is the most common reason for the condenser AC fan stopping working, and debris buildup around the fan axle can also cause blade seizing. Thermostat issues can also be a culprit, but it’s important to check the air handler unit first.
If the compressor/condenser unit has power and the compressor motor appears to start and run normally, but the outdoor compressor/condenser fan itself won’t turn on, it could be due to a tripped circuit breaker, failed capacitor, electrical issue with the contactor, or a broken fan blade. A broken fan blade in the outdoor unit may cause an unusual noise as it may be out of balance or striking other components in the compressor unit.
If the AC compressor and fan are not turning on, it could be due to a few common issues like a blown fuse, a malfunctioning thermostat, or a problem with the capacitor. It’s best to check these components first and if unsure, it’s a good idea to call a professional technician for help.
When both the compressor and outdoor fan have stopped running simultaneously, the problem tends to be the compressor contactor. Broken belts in belt-driven condenser fans can wear out or break, leading to the fan not circulating air properly. If the AC system’s compressor works but the fan doesn’t spin, you have a broken fan motor caused by a bad start capacitor. If the fan won’t start even with a kick-start and you hear the compressor running, you probably have a bad fan motor.
If the compressor issue is solely a compressor issue, there may be a wire broken from the contactor to the compressor or starting cap, a defective cap, or a switch located in the compressor unit that typically wears out and breaks down over time, causing the fan to stop spinning.
📹 How To Fix Your AC |Outdoor Fan Will Not Turn On
How To Fix Your AC Outdoor Fan Will Not Turn On. I felt the top of the fan motor on my outside ac unit and it was severely hot.
Why is my AC compressor fan not kicking on?
Common issues that can cause an air conditioning unit fan to stop spinning include electrical problems, capacitor problems, contactor issues, burnt out motors, broken fan belts, or clogged air filters. This can be particularly frustrating during summer when the unit appears to be working but the fan is not spinning, causing the air to not cool. Choosing a reliable air conditioner is crucial for home comfort, and there are several reasons why your fan might not spin. To address this issue, ensure that the unit is properly connected to the power source and that the fan belt is properly connected.
Why is my outside compressor not turning on?
The main reasons for an AC unit not turning on outside are a tripped circuit breaker, blocking the fan’s airflow, or damaged condensing unit. Other potential issues include incorrect thermostat settings or a malfunctioning compressor. If the inside unit is running but the outside fan isn’t, it could be due to several factors. To diagnose the problem, check the circuit breaker, inspect the condensing unit for damage, and check if the fan’s airflow is blocked.
Other possible issues include a belt needing replacement, the fan freezing due to lack of lubrication, or a bad fan motor. If the issue isn’t found, contact a professional for proper diagnosis and repair.
Troubleshooting when the AC unit fan isn’t spinning and the outside unit isn’t turning on involves trying various steps. If the fan isn’t spinning or the outside unit isn’t turning on, contact a professional for further assistance. With proper repair and maintenance, your AC unit should be running smoothly and functioning properly.
Why is my outdoor AC unit fan not spinning?
Breakers and blown fuse can cause electricity to cut off to the condenser fan motor. Check the electrical panel and reset if necessary. Clean the condenser coils to clear built-up gunk and rinse thoroughly. Check electrical connections for frayed, loose, or corroded connections leading to the fan motor. Faulty capacitors may also be visible and failing. Reset breakers or replace blown fuses if necessary.
Why is the fan not spinning on my outdoor AC unit?
To fix an AC fan issue, first check if the power source is working and ensure the power switch is in the “on” position. If the power source isn’t the issue, inspect the AC fan capacitor. If the capacitor is bulged or leaking, it indicates a bad fan capacitor and needs to be replaced. Next, analyze the fan motor and blades. If the fan blades aren’t moving freely when nudged, it’s likely a bad fan motor, as the motor bearings may have seized, causing the blades to not spin. This is a clear sign of a bad fan motor.
What happens if compressor fan stops working?
A malfunctioning condenser fan can lead to a lack of cool air coming from the vents, causing the condenser to struggle to remove heat from the refrigerant, resulting in warm air blowing into the home. This issue is especially noticeable during hot summer days when air conditioning is crucial. Additionally, a malfunctioning fan can increase energy consumption, as the compressor has to work harder to cool the home.
A sudden spike in electricity costs may indicate a fan issue. Furthermore, a malfunctioning fan can cause the HVAC system to cycle on and off frequently, potentially overheating and triggering a safety mechanism that shuts it down temporarily.
How do I reset my outside AC fan?
To reset an AC unit, turn off the power, wait for a specific duration, and then turn it back on. The process may vary depending on the unit’s make and model. If there is no visible reset button, turn off the power at the breaker for a minute before turning it back on.
Troubleshoot the AC fan and compressor. If the fan isn’t working, it could be due to the fan motor or capacitor, which may require professional attention. If the compressor isn’t turning on, it’s a more significant issue, as it’s responsible for circulating refrigerant. Check for error codes on the unit and consider a professional inspection, as compressor issues can range from electrical problems to refrigerant leaks.
Why is my outdoor unit not turning on?
The main reasons for an AC unit not turning on outside are a tripped circuit breaker, blocking the fan’s airflow, or damaged condensing unit. Other potential issues include incorrect thermostat settings or a malfunctioning compressor. If the inside unit is running but the outside fan isn’t, it could be due to several factors. To diagnose the problem, check the circuit breaker, inspect the condensing unit for damage, and check if the fan’s airflow is blocked.
Other possible issues include a belt needing replacement, the fan freezing due to lack of lubrication, or a bad fan motor. If the issue isn’t found, contact a professional for proper diagnosis and repair.
Troubleshooting when the AC unit fan isn’t spinning and the outside unit isn’t turning on involves trying various steps. If the fan isn’t spinning or the outside unit isn’t turning on, contact a professional for further assistance. With proper repair and maintenance, your AC unit should be running smoothly and functioning properly.
Can AC work without compressor fan?
A compressor in an air conditioner cools the air with refrigerant, allowing the unit’s fan to blow the properly cooled air around. Without a compressor, the air conditioner functions more like a box fan, moving air but not cooling it down. If your air conditioner is on the fritz, it’s crucial to call for cooling professionals in Richmond, Texas. It’s essential to know the relationship between the compressor and fan before seeking expert AC repair services. During a Texas heat wave, it’s essential to know how they affect each other to ensure the air conditioner works properly.
Should the outside fan run when AC is on?
The outdoor AC unit is a crucial component of a home’s cooling system, but it should not run continuously. If the unit runs continuously, it may be due to a clogged air filter, which screens dirt particles to prevent contamination. Dirty filters can interfere with heat transfer and cause the air to become dustier. Regular cleaning or replacement of the filter is recommended, and only install the filter type recommended for your AC system.
Restricted airflow is another symptom of a clogged filter, as it can cause the AC to overwork itself and reduce energy efficiency. Additionally, closed or blocked AC vents may also be a culprit. To ensure proper functioning, ensure all vents are open and the AC unit is running properly.
Why is my air compressor fan not turning on?
If your fan doesn’t start even with a kick-start and the compressor is running, it’s likely due to a bad fan motor. This issue is more common in poorly maintained systems or those operating in windy conditions. The only solution is to replace the motor, which can be expensive. A trustworthy HVAC technician can check the issue, and if your HVAC is over 10 years old, it might be better to replace the entire unit. If the fan spins slowly, it may be a sign of a broken fan motor.
What happens if the outside AC fan is not working?
The Phoenix air conditioning unit consists of motors and capacitors that turn fans and maintain temperature and humidity. Motors, like those in cars, cause motion and move air, while capacitors store energy for their functions. The two most common types are run and start, which keep the fan running and provide a burst of energy to start the fan. Capacitors are paired with indoor and outdoor fans and the compressor, as starting the fan requires more energy than spinning.
When capacitors fail, they lose their ability to hold a charge, and over time, they lose energy retention. External factors like extreme heat or high voltage can also cause damage. To prevent the fan from not running, preventive maintenance is recommended. If the capacitor fails on a new unit, check the warranty documentation, as most companies offer limited coverage for the capacitor. Preventive maintenance is the best way to prevent the fan from not running.
📹 Outdoor AC Unit Not Running, Not Turning On! Top 10 Problems!
In this HVAC Training Video, I show the Troubleshooting of an Outdoor Condensing Unit for Air Conditioning. I go over 10 …
I want to say thank you. For the past 4 days my central ac stop working and I use to push the fan just like you use to but it didn’t last long and it’s was so hot. So I went and bought the AC capacitor and just did the job myself thanks to your article and now everything works amazing. My AC has been with this house for the past 34 years so I do have an older one, but it’s all the same thing. Thank you again
This worked for me! Two years ago I changed out the capacitor thinking it was bad. It turned out to be a bad fuse. AC guy said hold on to my old capacitor because it was still good and I might need it later. Two year later I did and it worked and of course it was on the weekend. Thanks for the article.!
Thank you very much, you were very informative, I just had a service technician come out and change my capacitor, my AC unit fan was not running, $265.00 for the new capacitor. The technician was very helpful and informative, he advised me to clean out my outside AC unit coils with a garden hose at least once a season, he showed me how to do it. Mine was completely plugged up, I also need about 2 lbs. of the New Freon added, it was an expensive service call, but I learned a lot. I had no idea, my AC coils were that plugged up, it’s hard to notice that unless you look closely at the fins.
The fan on mine started howling like someone was mowing my lawn in the middle of the night. Waiting for the new motor yo arrive tomorrow. As preventative maintenance, I change the capacitors every 5 years and the transfer switch every 10 years. Sucks that the motor didn’t make it to the 20 year switch.
This article is worth it just for the zip tie tip alone! I’ve probably used 10’s of thousands of zip ties in my life and I have never heard of twisting the excess off…and…I have cut myself countless times on those things. I don’t know why I never thought of that. I guess you CAN teach an old dog new tricks! Thanks!
Could use some advice please. I have a standard multimeter, but don’t think there is a setting for microfarads, just regular ohms or do I not understand? When I turn on my unit, the fan isn’t moving and I only hear a buzzing sound, I do know a fair bit about electronics, usually signals a bad capacitor…Thanks Mountain Man
Get to the point. 🙄 Too much of irrelevant and off-topic blah blah blah!🥱 I just want to know the cause and remedy. Didn’t want to know how hot it is out there and whether an egg can be cracked and fried etc etc. 😮💨 Otherwise than that (removing the unnecessary blah blah), probably an informative article if the problem issue is indeed the capacitor. 👍🏻 I just didn’t get to watch the article because I got out off with the blah blah blah in the first quarter. Went out to continue else’s article.
How do you get a free capacitor because it’s still under warranty? Without incurring a service charge from the tech. Company. If you can DIY and the part is still under warranty, then why can’t a company such as Carrier send a new part out, free of charge? I know the part is not that expensive, but it is still under warranty and it’s the principle of the thing. Many other under warranty, household items and appliances can be requested from manufacturer’s, free of cost, without a tech. service visit. Why should this be different?
Hey there, just heard a big humming sound outside and turned the breaker off … now what would cause the outside unit running HOT and the Fan not spinning at all? It seems as if the fan died while the outisde unit and the compressor were working ? any help appreciated it’s Sunday night and we have 80+ degrees at 7PM here … cheers !
Hey there mountaineeroutdoor, I know you’re not an HVAC guy, just curious if you have any knowledge on my situation. I recently had a new motor installed on the outside unit. So when I turn the AC on, I can feel cold air coming out of the vents, it’s just that the fan outside never starts to spin… help! Lol, if you or anyone out there can… thanks in advance..
I been having problems with my ac n i suggested that it was maybe the capacitor bc my ac had shut completely off n wouldnt turn on so the maintenance man replaced the capacitor but now my house isnt getting all the way cold so i check outside at the condensing unit n i noticed it was doing short cycles ut would only stay on 30 sec and turn off for few seconds and kept repeating so i just turn my ac off completely cz im nit tryna hve a high energy bill im thinking its the filter drier line maybe needs to be replaced but idk im not a professional
2 months ago, fan would buzz but wouldnt engage unless we bumped it into monentum. Swapped capacitor. Problem fixed. Now: Same morning replaced duct work in attic, now randomly the outside fan non functional. This time no buzzing. Not sure if I hit a wire or switch in attic or if two scenarios are coincidental and unrelated
Both of my 1993 Amana units are still going strong. One has the original fan motor! Just a little oil, cleaning and maintenance. Yes, new units are more efficient but if they have to be replaced every 10 years you lose ALL of that energy savings savings! Here’s a vid of how just a few drops of oil keeps my unit going and going and going…. youtu.be/wSBr0PDCbzE
Thank you, Craig. I have been pleased with your educational articles and have started my education toward work in the HVACR field. Early this summer, the utility power to my house went off and the outdoor unit would not power-on. the contactor switch was fried. I replaced the contactor switch. About a month ago, the power failed momentarily, again. The contactor fried, again. At that point, i replaced my disconnect at the outdoor unit with a FUSED disconnect, and i added a surge protector to the circuit at the disconnect. Today, the power failed momentarily, again. But this time, the event caused a fuse on one line to blow ($3 loss), instead of a $20 contactor to be fried. And the fuse change was much more quickly done. In this article, Craig arrived at the cause of my unit’s no-start condition in the first two minutes. Thank you again, Craig.
THANK YOU. Our AC stopped working recently and we had a despicable “repairman” come out and tell us that our furnace control board was likely bad, and then try to price us out a whole new system for $13k. Using this article I learned what I needed to know to determine that I just needed to reset the low pressure switch. Fixed my AC for zero dollars. Very much appreciated!
Craig, My AC went down and we are starting a 100+ degree heatwave. I followed this article and found a bloated capacitor. Ran down to Grainger and bought a new one for 20 bucks (could have got one for $12 but I bought a good one)! Had it back up in a hour. You saved me hundreds!!!!!! You’re the Man!!! Thank you!!!!
Man. I did so much searching a couple years ago to put together all this info for myself. What a helpful article. Following this will troubleshoot 90% of problems you can easily fix yourself. Outside of these, it’s time to call a repairman in my opinion. Great article. Kudos. Wish I found this back when I needed it!
Excellent guide. In my case, it was a corroded 24V connection to the contactor. Pulled the contacts off to measure coil resistance, confirmed coil ok, put low voltage connectors back on, and the contactor immediately tripped and turned on the condenser. Now I can get me a new contactor to have a spare just in case, with my ac still working. Thanks!
Thank you for such an informative article! Definitely saved me some money and helps me to know when a technician is not just changing parts. As an aside for those like me that know the basics but not the nuances I believe all of the volts are AC. That may seem obvious to some but most of us think of house voltage as 120 and 240.
Really nice, Craig. Years ago, in Florida, I had an in-line condensate switch in my pvc pipe that used gravity to get rid of condensate. It had a p-trap in it and the switch was mounted there. We were in the home for about a half-hour when I realized it was a little stuffy in the home. I went to the thermostat and saw it was blank. Ugh. Luckily I had some tools and an electrical meter there. Using the schematic on the inside panel, I discovered it was the condensate switch opening up the power. The piping had shifted and wasn’t draining properly. Long story longer, knowing the things you teach here really makes you the hero when the chips are down! And the temperature is up.
SIr, you are probably the best tech, that, show some good stuff about ac systems, and i really enjoy ur articles, but…please could you slow down a bit, ur moving too fast, and also please call the names of the items that ur touching, saying “here to here and here to there”. is like a cow giving nice warm milk, then step back, and spill the bucket. IF u ger my drift. But please keep up the good works. Ur awesome.
Craig, Just wanted to tell you how much I appreciate this article. As a home owner and a System Engineer, I hate to have a service tech come out just to bill me for something I can fix myself. Took less than five minute to troubleshoot the fault and less than 20 to replace the thermostat control wire. you are time and money saver. God bless and thank you for sharing your knowledge!
Clear, concise, understandable instruction. No “Uh’s” or “ah’s” in the final product. Kudos. I think so many people see youtube articles as something anyone can do. Well, anyone can, but there’s so much difference in quality and presentation of content. The majority of these articles are trash in my opinion….a distraction in my quest for good quality content. So, hats off my friend in producing a truly high quality article to help folks who just need a little basic information to remedy a problem.
Hey, how do I check to see if there is juice to the connector from the system? I have checked the cap and the connector as you show in the article and all levels are good. I don’t see anything at the contacts, it is spotless. When I press the connector, everything starts up as normal. The fuse on the board in the attic is good. The drip pan is dry; actually has dust in it. The valve in the u-joint is down, and completely dry. The batteries in the controller are brand new Duracells. My daughter said it sounded like it was trying to run last night, humming, but I didn’t hear it. This system is a Goodman and it is only 3 years old and the guy who installed it won’t return my calls. (small company and I gave him the chance to do my AC) The system does not hum. It is not trying to run, but when I push in the connector the outside fan tries to run. Any help is GREATLY appreciated. It’s 90 degrees and this is not fun. Edit: I umped the R to G, B and W and nothing came on. It seems there is no power getting to the thermostat.
Hello, I always watch your post, i learned a lot from your website. Im a newbie, my walk in freezer have frost inside but still operating, when i checked the evap fan motor it is sucking air, is it supposed to blow air? are there any design in wif and wic that the fan motor is reverse direction? please reply. Thanks
Hello Craig, I have a old GE central A/C unit not working I attempted to check the capacitors 1 fan and the run, but the capacitors are so rusty you can’t see anything on them. I would like to replace both, I tried on Amazon but they all needed the UF off the capacitor not by the model # I was hoping you could help! The model# is GE 21TA936H1F both capacitors are oval, I really appreciate it if you can help, Thanks
My 25 year old Trane xe 1000 Started giving me trouble last month when the condensor fan wasn’t running so i figured it was a bad capacitor . I installed a new one cap and it seem to run ok for a month . The other day it started doing it again but when the fan does start up it seems not to know which way to turn . Sometimes it turns clockwise,sometimes it turns counter clockwise? I was told it probably is a bad fan motor. So i have one on order i hope it fixes it. I can’t afford a new unit right now 🙁 Any advice would be appreciated!
I’m having a problem with a EIM losing power periodically and shutting off completely and after several minutes, it turns back on. This is causing my thermostat turning on and off (ac turning off and on periodically). When it turns on, the voltage is 24v and when it’s turns off it’s 0-14v. Why is this happening? I recently replaced the indoor capacitor and fan motor. It worked fine for a day or so, then the problem above began to occur.
Thank you for your article. Yesterday i have silence from attic handle unit, and ac pump. Thermostat was blank, i do not using batteries. I put batteries, that not fixed issues, therefore display is come back on. I was outside hauling my dog walking neighbor in the dark, and shared, they said, recently they have tech cleaned overflow valve. I thankly climb in to the attic, previously exposed ac pump and inspected wiring, brakers, and condenser. I found overflow censor with brown liquids and used near laying cleaning brush to purge it all. Moving sensors i heard first clicking. Got it all back. But silence due to delay probably. About to remove air handling panel to inspect for fuses, etc., and unit is kicked on. I was satisfactory climbed down, where found outside pump is silent. After witching your article next morning i will use my power tester to see currents on the wires, and see if i can trace issues. Yesterday i should not touch pump, and sensor outside, that just below lid on TH4B3021SA – Luxaire, as i think problem was overflow sensor, and i cannot believe i could have 2 issues at the same time. Will purge and see if gas is in the system with screwdriver. Thanks a lot for your article. Hope this morning will be successful. Any comments highly appretiated.
I love your articles, and once again you have gotten me out the heat, I unplugged the power cord to the condensation pump during the winter to use the outlet to plug in my wet-vac and forgot to plug it back in. It is equipped with a 24v switch to avoid spillovers, with your Top 10 Problems troubleshooting guide I was able to solve this issue. I’m an electrician by trade but have found myself being asked about AC Units more, I will be purchasing your content. Thank you
Shoot Craig I’m a dollar short and a day late, I came across a outdoor unit that would not come on I checked everything but the pressure switch and misdiagnosed a bad board cuz the herm and common did not read 24 volts on the board.A senior tech came behind me and figured it out in 1 minute but I’m glad I made a mistake cuz that’s how I learn best🤓👍
For blown main power fuses a check for corrosion in the in the fusebox should be done. I had a random fuse blowing problem several years ago with my home AC. I even had a service tech come out and check the system. All he did was give the unit a good cleaning. After a few more weeks the fuse blew again. When I went out to check the fuse box, it was almost too hot to touch. I pulled off the inside cover and could see the corrosion. I replaced the fuse box and had no more problems.
This sounds like my ac guy! Were yours from Apple Wood appliances too!? Those guys wanted 20k!! I can’t believe they STILL charged my credit card $800! The repairman asked me to excuse him 5×s in 20 mins, sprayed my unit with water, said it was electrical and then charged me for “electrical wiring repair”! 😬
Awesome article, our upstairs unit was not cooling, air handler was running but outside unit not running. After checking the breakers and thermostat settings I had relinquished myself to having to call a HVAC guy on the weekend. Watched the article and was reminded that my unit has a condensate pump in the utility room on the first floor, sure enough it was unplugged, as soon as I plugged it up, it ran( reservoir was full of water) then the outside unit started running once it pumped out the reservoir. Thanks for providing an excellent article and saving me an emergency service call.
Thanks for vid Craig..! I have an ancient Comfort Aire by Heat Controller Inc. that still uses R22 (“liquid gold”). It had power at outside contactor but 24v contact was not pulling in. I pressed it in manually with screwdriver and compressor and fan kicked on. So that led me to follow the thermostat wiring like you say in vid. It led me all the way back to the older air handler unit (in conjuction with the old gas heating furnace) which is where I found the blue wire, of the inside thermostat wiring from the actual thermostat, loose and barely hanging off the transformer terminal screw. Screw must have loosened due to vibration at older air handler. Talk about a simple repair with no cost to me except for my time (not an expensive tech. that would have cost me hundreds). It’s all about starting at the source and having a good multimeter. Wanted to attach a photo of the wiring at air handler (furnace), but don’t see that option. Hope this brief trouble shooting scenario I added here may also help others with getting ideas of what could be the problem and a simple solution. 😊
I know this question has nothing to do with this article but I’m not sure if you see new comments on old articles. And sorry it is so long. I am brand new in the field and the guy I work with doesn’t have any knowledge on HVAC except for what the Tech before me showed him. But that tech didn’t do things the proper way, just what got you by, the kind of tech that went by “beer can cold”. One of the things they did was not use use a micron gauge when pulling a vacuum, use a manifold and not use vacuum rated hoses, not pull Schrader cores and would just run the vacuum for 45 minutes and then charge up! Well I was hired to replace the main Tech because he left and I’m trying to do the right thing. I work for a school system and want things to be done proper and want to do the best I can but it can be a struggle with the other tech, seeing how I am trying to change the way things get done. Anyway so I just got vacuum hoses, core removal tools, micron gauge and the Tez8 pump. I watched one of your articles on pulling a vacuum and wanted to do just like you did. We had a unit that was short cycling and come to find out the thin line with the bulb on the TXV had a hole in it. Not sure how long it had been that way but he took it off and put on a new one and we had trouble pulling a vacuum. First try wouldn’t pull down very well and took a long time so I shut if off and pressurized the system again thinking it was a leak even though it held the first time with 200lbs in it but this time 265lbs and it still held so started the vacuum again.
I powered off my furnace because we went on vacation so it would not cool an unoccupied house and when we got home the fan would not spin. Also found a mouse nest next to the Run Capacitor. My AC unit has an ECM motor, so there is no external capacitor and will not spin. I’ve taken the motor apart and it checked out Good on Ohms. On a 45 MDF +\\- 6% capacitor at what MDF value would this capacitor be bad? I assume 6% of 45 or 42.3 MDF? My capacitors currently is registering at 44.3 MDF and the fan won’t spin.
I love these articles I remember the days you had to go to the library and hope to find a book to fix something or spend half your paycheck for someone to come rip you off..My a.c. stopped working today it was 95 out watched half your article and figured out the problem and made it to get the part 15 minutes before the parts store closed.. So this guy get a like and a subscribe from me.
Great info! One quick cold weather question if I may: When you are trouble shooting a heat pump and turning it on an off, are you just leaving the furnace in a state of “call for heat” and then using the heat pump’s ‘fuse block’ to start and stop the unit itself, or are you turning the furnace on and off each time? OR…. are you ‘jumpering’ some contacts on the heat pump to fire it up just for testing? I have always wondered what goes on with this. I am in a situation right now where I need to figure this out so that I can bypass the comp, then the fan and even check out if the contactor is acting up due to some noises I’m hearing. It seems a little silly to run in and out of the house each time. My plan was to pull the fuses, call for heat indoors and then plug the fuses in for testing and pull them back out between tests all while the furnace is still running. Does this make sense?
hopefully this helps me. I installed an Ecobee over the winter. When I turned on the furnace, the a/c would turn on, too. I did some changes for the a/c high voltage to not turn on, but the 24 volt kept running when the furnace was on. I didn’t want to make any more changes until it started warming up, but today I put in my old thermostat and the a/c is not doing anything. I think the article will help me trace the issue. (I didn’t have 240v outside when testing)
Hi, i just replaced my compressor and I tried recharging the system, using a clamp meter to measure the amount Of current flowing through the compressor. ..i discovered the current shots as high 12A and then the compressors cuts out. Which is abnormal for a 1hp Unit… Please kindly help share your experience
Does anyone have any tips for getting the fuses out of the fuse box? Mine are definitely blown but I can’t seem to wiggle them out to replace them. Is it safe for me to pry them out with something if I turn the breaker off? I had the breaker off trying to get it with just my fingers alone and I felt a small amount of current when I used an area near the fuse as leverage and I got a little worried. Any tips or best practices for a really jammed in there fuse? Also this is like the 3rd time this has happened in a few years. Is it time to call an electrician?
I had trouble with contactor not pulling in when i pushed it in manually the compressor came on but not fan so i checked fan and it seemed hard to turn i spun it around a bit and it seemed looser then manually tried the contactor also pushed thermal reset on line when i pushed down on contactor it made crunch noise and got spark and buzz not sure if contactor had bug in it or just worn it is 25 years old so I got a replacement contactor and fan motor but unit has been running since i squished contactor going to replace it anyway and take a look inside. and the 25-year-old capacitor is still good and in spec even though it is covered in rust amazingly
Craig, thank you for putting this article together. I was able to quickly use my voltmeter and troubleshoot the problem and got it fixed. I still had a tech check the work and he said it would have cost you $580.00 for the contactor install. I only paid for parts and service call for 200.00. I enjoyed getting to know a little about hvac. I feel proud of fixing the unit with confidence, confidence you gave me with this article. Thanks!!