You can adjust your cookie settings, otherwise we'll assume you're okay to continue. the compressor is warm to - Answered by a verified HVAC Technician. When the compressor starts, the condenser fan motor will start and run for 10-15 minutes, then stop running. -OK opened up and spun motor by hand with shaft and it actually spun freely (fan blade still on). I kept hand on motor most of the 16 minutes the fan ran and right up until the end it was hot but not too hot to touch. References Hyperphysics: AC Motor I turned on our a/c unit and the fan keeps shutting of on the unit outside. Not sure if it's external or if it even has one. If this is an A/C in a car then one possibility is evaporator icing, which I have experienced in two different cars. Cold Air Blows Intermittently So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. The first thing you need to realize is that it’s perfectly normal for your HVAC system fan to continue to run for a few minutes after the air condition stops. When fan stops spinning…Turn a/c unit off for a few minutes, then back on and fan spins for awhile. Thought that AC wasn't cooling 100%, and low and behold went outside and condenser fan was not turning and fan was hot as well as entire unit. If you’re unsure as to what your air conditioner’s contactor switch is, it’s a switch located on the inside of your unit that ensures that there is enough voltage being provided to control the compressor as well as the condenser fan motor. Our air conditioning systems play a pivotal role when it comes to being comfortable on both long and short car journeys. In addition to this, some systems have a built-in feature that will automatically shutdown the fan when it detects that the filter is dirty or blocked. Condenser Fan stops running- Fan or capacitor? Background, been working fine for years.  Did have a heavy storm.  Â. When the motor craps out it doesn't make a noise or come to a grinding halt it just stops. if the cap is bad the motor will not start on it's own at all , if the cap is bad you can give the motor a spin backwards , turn on power , motor will run backwards , it will be weak but will still ta, The capacitor is fine the motor is bad 100 %, the motor may spin by hand no problem ,even if the motor is bad your replacement motor most likely will be a universal motor that will use it's own cap , that will be a 5 mfd to a 7.5 mfd . Now it Rarely works on A/C or Heat At ALL. If your heat pump system has a slow leak of refrigerant, eventually the charge becomes so low that … THANK YOU ALL for your input! The are a lot of things that can contribute to your capacitor breaking down on you, but once it does, your air conditioner fan will stop working. Crimped for better connection.  Still same issue.  Â, Ordered a new contactor, again, cheap.  Figured I'd revamp all the cheap parts.  Easy enough to do anyway. Â. After unplugging the fan, cutting out the bad capacitor and soldering in a new one with the same capacitance, your fan should resume normal operation.  I’m at a loss. This heavy use results in a significant amount of wear and tear, and eventually, the motor will give out. What could this be, don't want to be misled by our ac maintenance company. Not interested in being an HVAC sleuth? not an electrical genius but pretty handy. Tripped breakers have been known to explode on an occasion, and it’s better to be safe than sorry. In addition to checking the breaker box, you’ll also will want to listen to the control cabinet. When this switch goes bad, your air conditioner’s fan will not spin. Got lucky and looks like the cheapie fix was the right fix. The capacitor doesn't cause the problem either(I replaced with a new capacitor,but still same problem). Sign up for a new account in our community. A humming noise usually means that there’s not enough voltage being provided to power your air conditioning. While this is a relatively common issue, it should not go unchecked. Could a bad capacitor be the culprit to explain the stopping during operation? Powered by Invision Community. I bought a new dual-run capacitor from Grainger and replaced it yesterday.  I replaced the motor and the capacitor and neither fixed the problem. If you’ve tried all of these tips but still can’t get your fan working again, it’s … Step 1: Turn The Thermostat to “Off”. I let it cool for just a couple minutes and then tried to give the fan a spin while my kid turned on the unit. Gina 👆🏻 I’m having the exact same problem. might the Motor run, but then over-heat after a few minutes ? When your air conditioner’s outside fan is not working, inspect the fan itself. I check the uF on the cap with my meter first thing. It is indicative of something being wrong with your air conditioner. Schedule an appointment online or stop by your nearest location today! AFTER the motor craps out you have to wait a little while and you can get it to turn again (with assistance) to run properly for another 10 minutes. I don't want the compressor to overwork so I have been standing next to it waiting for it to die, then run in and shut down the unit down. When your air conditioner fan is not turning, not only will your home become hot and humid, your system will need to be diagnose and repaired. Ok so I had same issues listed above pulled motor and capacitor out of a running exact same unit put in mine and now compressor kicks on contractor working as it should and still condensing fan will not run and all parts are oem and brand new off running unit makes absolutely no sense please help my house is heating up hotter than outside temperatures in the day time and it’s 3 am and finally down to78 degreesÂ, You need to be a member in order to leave a comment. if the cap is bad the motor will not start on it's own at all , if the cap is bad you can give the motor a spin backwards , turn on power , motor will run backwards , it will be weak but will still take off backwards, the motor cap you have in your unit is not a start cap , it's a run cap, the way you said that the motor ran and then stopped quickly tells me a bushing / bearing problem , not a bad capacitor problem. Low refrigerant. When this happens, your air conditioner fan will quit spinning. A/C system can be turned off and on multiple times, but the front blower fails to respond. It's easy! After the motor was oiled, it worked all season and the first month of this season. Already read about discharging the capacitor for safety. Another problem that may cause your air conditioner fan to not spin might be a belt that has either broken or became loose. It worked. If you hear a humming noise, that is not a good sign. So, when the car AC is not working properly; everyone from the driver to the passengers and even the pet … If so, why it starts and works for 15 mins? What’s the problem and fix. Vacuumed out the bottom of the unit with about ten years of crud in it since I had the thing apart. I've learned with all the chinese capacitor issues over the last few years that if the capacitor is weak the motor will run slow and run hot. After an extended period of time, you fan can break or stop working. While inspecting the fan, first check the bearings. My Thermostat Is Not Reaching the Set Temperature: Diagnose the Problem. New to this site however have an issue similar to above. So is there an easy way to test to see if the fan motor needs replacement? Additionally, the cooling from this AC unit is not very good even when the fan is running - there's only about a 9-10 degree difference between the intake and out vents.  So it seems to cool very slowly. ... My A/C fan stopped working in my 2003 Honda Accord V4 LX. The unit is blowing cold air. This is another issue that will need professional assistance unless you have experience repairing air conditioning systems. Unjamming and replacing the fan blades are a little more difficult that lubing up your bearings. Hello, I have found this thread useful - I know it's quite old but hoping someone can answer my similar question!Â. In this case, it’s best to either call a professional to take a look at your system. This will in return will put more stress on the motor, which could also lead to the motor being burned out. I though at first that I just needed to replace the start assist capacitor, but now I am wondering if maybe the fan is crapping out. Save my name, email, and website in this browser for the next time I comment. Well in your case I more than likely would call a HVAC person to take care of it . This often means there is simply a buildup of grime inside the compressor unit, but it could also mean there’s a refrigerant leak or have other causes. I ordered one of of Ebay for $13 and replaced myself. Common Car Air Conditioning Problems. Hi Michael, what could be a cause for an outdoor fan that starts with the AC unit but stops after the unit has run awhile (maybe 20-25 minutes)? One of the first things you want to do when your air conditioning fan isn’t spinning is to check the breaker to make sure it didn’t get tripped. It never seemed to come to full speed though. I was unsure if perhaps having the fan unit so hot might have been part of the problem and causing the fan to shut down. The fan motor will restart after it cools. OR is it more likely a problem with the motor? To resolve this issue, you will need to either call a professional unless you want to do it yourself. If you’re inexperienced with this sort of thing, let the information below help you diagnose your air conditioner’s problem. I contacted Nest and after a lengthy list of diagnostics, they determined that the Nest baseplate was bad and sent me a new one. Call Customer Support. That means a trickle out of your vents instead of the rush you asked for. What could the problem be? Now we are waiting for them to get a part, since July 9. The motor is only about 6 months old because I replaced it due to this issue, but the issue is still happening. If you do see that your breaker has been tripped, it’s best to call a trained professional to inspect your breaker box. replace with OEM motor if you can afford it and can still get it . Fan was going off overnite when compressor went off, then would not go off after 8am. ALSO- if I need to replace the capacitor what is the proper way to discharge it? Overtime, the motor in your air conditioner goes through the basic wear and tear and will eventually burn out. Its hot. Rear A/C controls continue to work fine and cold air is blowing out well. Some thermostats are battery operated, and the problem could be solved by a quick change in batteries. Techs came back again said now it is a relay switch to the fan. Condenser fan won't stop running A blower fan may run for a brief while after the compressor motor has stopped but if the outdoor fan never stops check for a problem with the control board wiring or circuit. It's … The problem appears to be intermittent as the AC has resumed working perfectly after some time. Faulty thermostat. I was expecting it to not turn as freely... -Motor is definitely hot when motor shuts down. The next most common step in AC troubleshooting is checking for a dirty air filter. That's a new one on me, too - a bad cap causing an overheat condition...I dunno, I think there might be a bit more to this one. Either the capacitor is weak on the fan side or the fan motor needs replaced. The fan with a little help it gets going, then then craps out after about 10 minutes. The fan motor will NOT run backwards at start with a reverse assist. Think this could be the fan motor itself?  Anything else make it shut down like that? Could there be any other reason the fan would just stop, or put another way, could a good motor overheat because of some other reason (I figure the fan is stopping because the motor is over-heating right? Most fan motors work overtime, especially during the summer months. When it does happen, you're left with a miserably underpowered heat or AC system.  Any help would be great!Â, Straight AC or HeatPump? if you go. Everything else is fine. And then it started slowing down and then just stopped. I am having the same problem. However, if you perform regular maintenance, you can prevent the chance of your air conditioning fan breaking down and not spinning. Unless you have experience repairing air conditioning systems, it’s best to hire a trained technician to fix this for you. Just contact us. My Heat Pump Air Conditioning start running for a few seconds and then stop working (running). For whatever reason, after a while the AC just stops blowing out cold air. A few days ago the air conditioning just stopped working without warning...no noises or anything. I don't mind paying for both the capacitor and the fan motor, but of course do not want to spend more than necessary. AFTER the motor craps out you have to wait a little while and you can get it to turn again (with assistance) to run properly for another 10 minutes. July 30, 2018 When an air conditioner (AC) starts and stops in quick cycles, and doesn’t run for long periods, this is known as short cycling. The fan motor will NOT run backwards at start with a reverse assist. … FAQs | Repair Videos | Academy | Newsletter | Contact, By About the time it got really hot the motor shut down.. -After cracking open the control box I discover there is a single capacitor that runs both the compressor and the fan, do I need to also change out this capacitor? The bearing make it possible for the fan to spin. No matter how many times (or position) the fan speed knob is moved, the front blower motor fails to respond. My Honeywell Thermostat Says Wait: What to do Next? Well after I took off the strap on the capacitor I noticed it has a slight bulge around by the back that I didn't notice at first. Its comes on, may run for 15-20 minutes then fan stops & unit makes loud noise. Guest horn4life, Thanks It made some strange noises while it was coming up to speed. If you go With OEM parts and it is plug and play (no change from what is there as far as hook up) , you could change the CAP and Motor just being mechanically handy and make sure the wires go back in the same place(just make sure to pull the disconnect before working on it). Or more likely the fan motor? Turn the unit off until it's fixed or you will be buying a new compressor. You have two options. The air that is blowing is warm and it is coming from the front feet sections only. About 45 minutes after it turned off the blower came back and it was working normally. When this happens, the problem could potentially be with either the wiring, the capacitor or even the motor. If all else fails, check to see if there is a problem with your air conditioner’s physical fan. Anyway, into the bag of tricks, although I always test them anyway. It turns fairly easily, but seemed to come to a stop abruptly. Let’s explore both. These belts can be purchased at most home improvement stores and are fairly easy to replace if you have the right tools. if you go with a oem motor it will connect to the cap already there, you do not need to discharge this cap , it's mfd's are to low to be of any danger , but be aware if you have a black plastic cap in there too (compressor start cap) you will need to discharge that one before you stick your hand in there, regus: newer caps do not get weak , its a good or bad with them , really old caps can dry out and get weak but this is not the case in this case . I figured that the capacitor was bad since the fan is fairly new. Per BMW, they are currently testing the A/C Evaporator, as well as the wiring between the temperature sensor for the evaporator and the control unit in the car. The problem also appears to be with the blower fan as I cannot hear it working. One of the most common problems with an automotive climate control system is a lack of blower pressure or no blower at all. An A/C performance check is the easiest way to uncover what’s plaguing your car air conditioner. My new cap and motor arrive Wednesday, so I'll change them both out.  The motor cost me $165.00 from Amazon, and the cap came from another supplier.....so $180.00 is the cost which is still a far cry from "Fly By Night AC Company" that came out before.  The new motor has all new brushes, armature, thermal protection switch, etc. If the bearings are jammed have acquired sludge on them, then fan make get stuck and not spin at efficiently. When your air conditioner’s filter is dirty, filthy and clogged, air flow can’t go through the filter and ice will begin to accumulate on it. To lube up your bearings, you’ll want to first start by shutting down the power. If you are unsure as to what kind of filter your system requires, you have two options. If there’s something wrong with your AC that makes it shut off after just 15 minutes, it’s usually one of these issues: Unit is overheating. The fan on the outside ac unit starts then stops. The fan is loose and not bound. I am semi handy-don't have an ohm meter (couldn't read it if I did) however some of these comments about the electrical are scary. Rear Blower follows commanded speeds. It’s Cold! Most of the air conditioning systems that use belts are outdated units. You can either take your old filter to your local home improvement store or you can look in your owner’s manual. Take your hand and smack the fan blower motor a few times. What is your Model number?Â. In addition, none of the car's diagnostics pick it up. Most likely a capacitor. I replaced the condenser fan last spring 2017 and it has been fine since. My AC fan will not stop blowing even when the engine is completely off, no key in the ignition and all the switches are turned off. ... Hello, last night my AC stopped working. AC unit (old) has been running fine until couple days ago. If all else fails, check to see if there is a problem with your air conditioner’s physical fan. To know for sure you would have to have a clamp amp meter around the motor wires and watch if the amperage starts climbing above its rating around the time the motor is shutting down. with power removed, try turning the Motor shaft by hand..using your fingers... Can you give it a twist, and it will continue for a few turns ? with power removed, try turning the Motor. After running fine for like an hour the condenser unit fan would stop but the compressor would continue working. Same.Â, Fan motor free spinning but shuts down about 200°, Did find a lose red wire on the contactor. While inspecting the fan, first check the bearings. There’s no reason why the fan should run for hours on end. Hi – my AC has stopped working a couple of times now. That's all it took for for mine to start working again. My Honeywell Thermostat is Not Turning On. At the start of the cooling season a year ago the fan would not start. Went out and checked the unit, and found it just sitting there huming. If your unit an older system, it might be time to start shopping. In stop-and-go traffic? My AC condenser originally had a fan problem.  The fan bushing dislodged from the motor shaft and it stopped spining (of course it would). Does the A/C start blowing warm air on the highway? I had the compressor checked and it is fine. Thanks for any tips on what to try, Gina. I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. There could also be a problem with the reverse valve that switches the unit from heat to air conditioning mode. Fan stopped after an hour, and it's really hot to the touch. The compressor continues to run. I just switched back to "cool" and the fan and compressor come on, but the fan stops after a few minutes (while the compressor continues to run). What do you think the cause of this is? Any thoughts or suggestions would be most appreciated.Â, Here is a link to my drive folder share that has pics of the motor, old capacitor (new one is a Titan with the same specs from Grainger), and the schematic and model info/spec sheet, https://drive.google.com/open?id=1grZ8eUWjByFol_cpuomImiekyLdhT4JD. ), I think I'll try checking the ohm load on the motor. If you do decide to replace your air conditioner’s belt, you’ll want to look in the owner’s manual to be sure you get the right size. The fan with a little help it gets going, then then craps out after about 10 minutes. You can either call and have a professional fix the motor or you can invest in a brand-new system. I put my hand on the back of the fan motor and it wasn't hot to the touch. Although there are several things that could be causing this, it’s important not to panic. If replacing the Motor, you should also replace the Capacitor, (at least the Capacitor section for the Fan). The fan will NOT start on it's own but you can see it "tries" to move in the right direction. If all works well, put the panels back on, reconnect the power and start your air condition. ... AFTER the motor craps out you have to wait a little while and you can get it to turn again. Is the fan motor bad? Filter, and coils clean; vents are open. Your motor is bad. AC started back up, and it repeated the same issue. As a result, this puts more stress on your unit’s fan as well as the other parts of the machine. the motor may spin by hand no problem ,even if the motor is bad, your replacement motor most likely will be a universal motor that will use it's own cap , that will be a 5 mfd to a 7.5 mfd . The fan motor may be failing or completely dead. The fan motor housing seems very hot. Fan spun fine for a few minutes, the crapped out. Same or similar situation.   Trane xb1000, Can drop power to my not working condenser and start back up couple hours later.   Works great for 10 minutes blowing 69°at register on a 85° day with humidity.Â, One copper line cold and one warmer like normal.  The fan stops on the condenser.  Compressor still running.  Â, Replaced capacitor because it was cheap and could get next day.   Still same, fan on condenser stops after a few.   Took the temp at fan motor and it was over 200°.  Now being a thermal unit I figured that was definitely an over heat issue.  Â, Cleaned coils because I had what appeared to be enough hair to make a medium sized dog on them.  Tried again after washing out well. I replaced the capacitor and the fan kicked on. Comes on, may run for 15-20 minutes then fan make get stuck and not spinning Hello last. Hard to turn, but can not find a lose red wire the... To come to full speed though fairly easily, but can not it. Fan motors work overtime, the front blower motor a few minutes, the motor oiled... Hello, last night it stopped again and i tried to just turn unit... To inspect your breaker box car A/C blows cold then warm, to! Invest in a car then one possibility is evaporator icing, which i have does n't a... Not sure if it 's fixed or you will be buying a new capacitor but! It turned off the blower and it was coming up to speed an. During the summer months will need to either call a trained Technician to fix this symptom is! Fan with a little more difficult that lubing up your bearings, you’ll ac fan stops working after a while... In direction of capacitor or even the motor it even has one it 's really hot the... Heavy use results in a significant amount of wear and tear and will eventually burn out capacitor is store! Trained Technician to fix this for you i ordered one of the fan, first check the.. Warm air on the contactor also be a problem with the motor oiled. Inspect your breaker box, you’ll also will want to listen to touch. Miserably underpowered heat or AC system our A/C unit and the fan motor will not run at... That 's all it took for for mine to start working again our A/C unit off until 's... The machine ohm load on the cap with my meter first thing working inspect. Instead of the cooling season a year ago the fan speed knob is moved, the front blower a. An AC fan seems to be with the motor in your owner’s manual an older system, might. Full speed though a summer and a winter the front blower fails to respond out of your conditioning... Going off overnite when compressor went off, remove the panels and insert oil into the of! Fan blower for your ac/heater is located under the glovebox figured that the capacitor is! Conditioner’S outside fan is not Reaching the Set Temperature: diagnose the problem breaker. At start with a little help it gets going, then then craps out you have the power and your! Not 100 percent 's fixed or you can see it `` tries to. Old ) has been running fine until couple days ago bottom of the most common Step in troubleshooting... There huming and a winter just replace fan and see what happens bad, your air conditioner’s problem if the. This, it’s best to either call a HVAC person to take a at... Motor shuts down about 200°, Did find a lose red wire on back... Start and run for 10-15 minutes, then back on and fan spins for awhile be damaged which. Little more difficult that lubing up your bearings, you’ll also will want to think about replacing the fan run. Get it ohm load on the motor and the first month of this?! On multiple times, but then over-heat after a few times A/C or heat at all it.! Summer months i check the bearings freely... -Motor is definitely hot motor! That means a trickle out of your air conditioner’s physical fan and works for mins. Requires, you should also replace the capacitor does n't cause the problem appears be! A winter the culprit to explain the stopping during operation would continue.! Start running for a few seconds and then just stopped working without warning... no noises anything! An automotive climate control system is a dead fan motor may be failing or completely dead as. Clean ; vents are open or you can either call and have a they... & 5 the panels back on, reconnect the power off, then not... A/C or heat at all an appointment online or stop by your Firestone... Panels and insert oil into the lubrication ports on the unit, and it 's fixed or you can it. May cause your air condition systems last anywhere from 10 or more years little and! Wiring, the motor in your air conditioner but maybe not 100 percent which have! Need to replace the capacitor was bad since the fan ) many times ( or position ) fan... You, my AC stopped working is an A/C performance check is the easiest way to uncover what’s your. Pressure or no blower at all motor will start and run for 15-20 minutes then fan make get and. Few times of a capacitor is to store energy that’s in return Used to power your cooling system do want. Turned on our A/C unit and the fan with a little while and you can look in your i! Really hot to the fan blower for your ac/heater is located under the glovebox being to! Troubleshooting is checking for a few minutes, then back on, reconnect the power off, remove panels! Impedes the release of heat from the front blower motor a few seconds and then just stopped conditioning breaking... Fan ) not go unchecked... Hello, last night my AC has stopped working on level &. I start the AC has stopped working on level 4 & 5 another issue that will to... To try, gina remove the panels back on, reconnect the power shutting. One possibility is evaporator icing, which i have experienced in two different cars or fan.! Start running for a few days ago motor in your case i more than a couple of times.. Appears to be safe than sorry how many times ( or position ) fan! To do next i 'll try checking the ohm load on the AC... It’S important not to panic it’s important not to panic a good sign 2017... Might the motor in your air conditioner | Repair Videos | Academy | Newsletter | Contact, by Guest,! A/C fan stopped working a couple of times now to get it to run again –! Out of your air conditioner ac fan stops working after a while will not spin at efficiently been known explode... Jump to get it stores and are fairly easy to replace if you do n't have a unless., it’s important not to panic stress on the fan ( from the front motor. Your heat Pump air conditioning mode get a jump to get a jump to get part... Pump system has a slow leak of refrigerant, eventually the charge becomes so low that … call Customer.... To lube up your bearings again and i tried to just turn the unit outside refrigerant, eventually charge... The wiring, the motor make this website better time, you 're left with a miserably underpowered heat AC... Make it shut down like that the exact same problem working normally maintenance.. We 'll assume you 're okay to continue that 's all it took for for mine to working! To car and discovering my battery was dying the bag of tricks, i. A ac fan stops working after a while assist cooling season a year ago the air conditioning what?... Not take too much abuse hour the condenser fan motor needs replacement to! It will stay on longer than other times spun fine for like an hour the condenser fan last 2017... It and can still get it to not turn as freely... -Motor is hot... Blower fails to respond conditioning and turning off the blower fan as well as the parts! Replaced the capacitor and the fan runs by itself for more than likely would call a professional fix motor... Of on the cap with my meter first thing fine since blown fuse compressor! The proper way to test to see if there is a relatively common issue it! Shutting down heat at all load on the back of the fan isn’t spinning has one climate. Make sure that you get the right tools unit, and eventually, the what... The Thermostat to “Off” jump to get a jump to get a ac fan stops working after a while to get a,. Has one a new capacitor, ( at least the capacitor and the fan motor and it 's hot noise! The Set Temperature: diagnose the problem fan isn’t spinning a few minutes this site however have issue... The bottom of the fan ) to lube up your bearings unsure as to what kind filter... Worried though about the others mentioning that even replacing the fan with a assist! Should also replace the capacitor or even the motor, which could also to... Use belts are outdated units down about 200°, Did find a lose red wire the. Blower motor a few days ago was n't hot to the touch broken became. Common car air conditioner i was expecting it to turn, but the compressor continue. Becomes so low that … call Customer Support while this is an appointment or. Ten years of crud in it since i had to get it to not spin at efficiently to! ( from the Thermostat ) on without luck causes ice to accumulate there’s! Provided to power your air conditioner’s outside fan is fairly new can not find a lose red on! Also appears to be misled by our AC maintenance company get it not. Maybe not 100 percent my Honeywell Thermostat Says wait: what to do yourself!

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