Always change the air filters regularly and clean the condenser coils. There are a lot of factors that determine whether your compressor will turn on, including blockages and problems with the thermostat that may prevent the compressor from working properly. My fan is not running on the outside ac unit. If your ac compressor is not working, but the fan is running, someone might have unknowingly set the wrong temperature on the thermostat. Problem #3: A bad compressor The compressor is the core of your AC system. 26398 Deere Ct. Ste. There are also times where you can fix it yourself. I've changed the capacitor and the fan and it still is not running. We put our customers’ needs first. What Happens When The AC Compressor Malfunctions When there is an AC compressor failure, you may face one or more of these situations – Send us an email and we'll get back to you, asap. In addition to checking your thermostat, you may also want to check the cleanliness of your coils and air filters. When your compressor fails to function properly, however, your air conditioning system is unable to complete this important step in the process of keeping your home cool. You cannot replace an indoor or outdoor unit with any type you like. If you still find yourself wondering why your AC compressor is not working but your fan is running, you may need the help of a professional. Check out our post, When You Need a New Air Conditioner, to learn more about when to upgrade. (Even if it's not a heat pump.) When you don’t clean your condenser coils or replace your air filters regularly, you increase your compressor’s chances of overheating, which causes your compressor to automatically shut off. The unit inside the house is running, as well as the condenser fan, but the compressor is quiet as a mouse. If you have difficulty getting the blades to turn, there may be debris wrapped around the fan axle, or the motor bearings may be dirty or jammed. First, check the circuit breaker to see if it has tripped or if there's a blown fuse. If it’s not an electrical issue, there’s still a chance that your compressor is having issues receiving power. Another potential cause for a dead compressor is an overheated unit. A compressor is the heart of an air conditioner system. And what about the unit's filters? If your system is running but you hear unusual noise coming from the outdoor unit, you might have a bad fan or a bent or broken fan blade. (Pro tip: Be sure to clean around the unit as well.) Symptoms of a Central A/C Fan Not Working Like your capacitor, you’ll ideally want to have your local HVAC technician lend a hand in replacing the damaged part. If the fan won’t start even with a kick-start, and you hear the compressor running, you probably have a bad fan motor. This problem requires you to have some knowledge of electrical wiring. One way to address, or even prevent, this issue is by performing some HVAC maintenance. First, you’ll want to clean your condenser coils by removing the outer casing of your outdoor condenser unit and then rinsing your condenser coils with water. Double-check your thermostat settings to make sure that they are correct. Pro tip: It’s highly likely that a damaged capacitor will lead to additional damage to your HVAC system, such as a dead compressor. An old AC will eventually reach the end of its useful life. Stay cool! 4 thoughts on “ Reasons an Air Conditioner Compressor Will Not Start ” James L Cue May 29, 2020. Something’s wrong with your AC, and now, you’re wondering why the AC compressor is not working but the fan is running. This causes the compressor to shut down. Understanding the Parts of Your AC Unit Leave a Reply Cancel reply. They happen to be inexpensive, and buying them for a replacement is not going to put you out financially. A capacitor may be used to start the fan and keep it running—as in a start/run capacitor. If the unit was recently replaced, but the compressor is not operating correctly, it could be that the two groups are different. I replaced water pump and radiator and coolant temp sensor. If an old unit’s compressor stops working, but the fan keeps running, this is one of the first signs that the system has reached the end of its life. A great way to ensure that your compressor continues working as it should is through regular air conditioner maintenance. ... My AC stopped working. I am having problems with my AC compressor not coming on. Reply. If that is the case, you may need to replace your thermostat, which can easily be done by an HVAC technician. Save my name, email, and website in this browser for the next time I comment. Something’s wrong with your AC, and now, you’re wondering why the AC compressor is not working but the fan is running. If the thermostat is broken, your HVAC tech will let you know this and will replace it for you. Another potential issue to consider is that your thermostat is faulty. At a certain point, it makes more sense to replace your system than to continue replacing parts here and there. If the compressor gets blown, you will need to replace the entire AC unit. If all else fails, check to see if there is a problem with your air conditioner… I checked the breaker, and even replaced it since I didn't like the way the original one felt. If there is a trip or a blown fuse, this could be your issue. Now that you’ve identified that your compressor isn’t working, you’ll need to do some troubleshooting to determine why it’s not working. Whenever assessing an electrical issue, we recommend proceeding with caution. Adjusting the fan speed can solve the problem. An HVAC technician will not only have knowledge of how to diagnose your air conditioner’s issues, but he or she will have the necessary skills and tools to resolve the issue as quickly as possible. As a result, you expect the compressor to cool the room down, but it has been given the opposite message. Give All Time Air Conditioning a call at (561) 777-9888 for a free any time consultation. In such cases, the room may be already cold enough, so the compressor is not required to operate. The high pressure is what then pushes the refrigerant through the refrigerant lines to the condenser coils, which allow for the heat to be released from refrigerant and, therefore, the heat to be eliminated from your home. Your fan, however, may still be running because it is receiving power from inside your home. The fan inside, however, is still working. 01 - Dual Shaft Fan Motor. With that said, if your compressor already isn’t working like it should, it’s time to troubleshoot. If you are in a huge pinch, you can use a large box fan blowing on top of the unit and down into it, or pulling the hot air out, this will buy you very little time. When You Need a New Air Conditioner System. Your capacitor is also responsible for providing your compressor with power. The outside fan is the condensing unit. If your system is 10 to 15 years old, or older, your AC system is reaching its end of life. Whenever there’s an issue with your air conditioning system, the first thing you’ll want to look at is your thermostat. The fan keeps running because the central unit has no such problem. Your email address will not be published. This also voided any warranty that they might have still had to cover their unit from the manufacturer. Capacitors store up energy and when the motors need to turn on, the capacitor will release that boost of energy to get the motors running. When the fan is running but the AC compressor isn't there's a good chance that electrical power isn't reaching the outside unit where the compressor is located - and since the inside unit has power, the fan is still operating. If you suspect your capacitor is the issue, continue reading. Even with proper maintenance, the AC unit will ultimately deteriorate and will need to be replaced. With the heat pump fan not working, the compressor can overheat and be damaged – … So please, before you do it yourself. A dead compressor makes for a dead AC unit. If the fan doesn’t start running, you may have a bad fan motor. (Pro tip: Learn more about your compressor by checking out this article by Southwest Tech.). Why is My Air Conditioner Not Blowing Cold Air? This is sometimes simple to resolve. Then check-out our page - heat pump iced-up in summer. While it may take some detective work, you should be able to identify the issue—if not, you can always give your local HVAC technician a call. Split AC systems sometimes experience this problem. Call us Any Time! Today my compressor quit. If the fan isn't working, that can cause the coil to freeze. If the fan is not running it will not be able to remove the heat. HVAC Troubleshooting: Why Your AC Unit is Not Cooling. This can effect the compressor and not the fan. Check the wiring between both the outdoor and indoor units. When the compressor is not coming on, your air conditioner unit will not run properly. If the compressor is running, but the fan motor is not running, the fan motor or the fan motor capacitor are likely at fault. While it may take some detective work, you should be able to identify the issue—if not, you can always give your local HVAC technician a call. Then, we’ll explore just 6 reasons why your AC compressor may not be working but your fan is still running. When this is not possible, call your professional HVAC tech in to diagnose the problem and make the necessary repairs. In fact, if a faulty compressor was the main issue, you may find yourself with a damaged compressor as well. You took over its job of kick-starting the fan by pushing the blades. If both the compressor and the fan motor won’t run, use a multimeter to test the temperature control thermostat for continuity. Replacing them is a tricky job, so leave that part to your HVAC expert. In other words, your thermostat isn’t adequately communicating to your system that your compressor should be running. If you don’t hear any sounds to indicate that the compressor is working, and the fan isn’t spinning, the most common causes are a lack of power or a faulty compressor contactor. Scenario A: Compressor works, but the fan does not spin The problem : You have a bad fan motor and/or bad start capacitor. If the compressor isn’t starting, check the wiring connecting the two units. This is more common with systems that are poorly maintained or that operate where a lot of dirt/debris is blown around by the wind. This is a big no no, and you could fail the compressor and other components. ... the indoor evaporator and the outdoor condenser/compressor – are operating. After an extended period of time, you fan can break or stop working. If an old unit’s compressor stops working, but the fan keeps running, this is one of the first signs that the system has reached the end of its life. If you cannot do these things yourself, have your AC tech visit the home and inspect your ac. Next, you’ll want to replace the air filters throughout your home. This may sound like dire news, and it possibly is, but compressors can often be repaired. Throughout the day, this cycle is repeated, making it possible for your home to remain at your ideal temperature. Uh oh! Hmm, it seems like the furniture is getting dusty, 10 Simple Air Conditioning Tips to Save Energy. Look, we get it – we practically just gave you all the tools you need to troubleshoot and try to get this fixed all on your own. This could be why your fan is still running, but your AC compressor has finally decided to give out. Whether you’re in need of residential service, or you need a go-to technician to handle your commercial HVAC needs, we’re here for you. Pro tip: If you plan to upgrade your thermostat, consider installing a smart thermostat. Today, my air conditioner unit decided to give up the ghost for some reason. The Latest in Heating, Ventilation & Air Conditioner Systems, outside ac unit not running but inside is, ac compressor not working troubleshooting, air conditioner compressor not turning on, split ac compressor not working but fan is running, window ac compressor not working but fan is running, 4 Reasons Why AC Compressor Not Working But Fan Is Running, Air Conditioning: The Eco Friendly Alternatives, Maintaining my R-22 Air Conditioner: Is it Worth it? If you. This shows you how to troubleshoot and fix a heat pump or AC unit that is not working. A layer of grime on the fan blades can also slow it down, so again you may just need a good cleaning. As your system ages, the components within your system begin to deteriorate. What else could it be? approximately 10 minutes,at which time the fan stops, yet the compressor continues to run. Its getting power but the cooling fan outside will not turn on. The outside unit may not be getting power. Do a visual inspection for this one, too, and see if the cooling fan is not broken. Caution: Do not run a heat pump or air conditioner without the fan working. It’s useful to know what to do if the outside AC unit isn’t working but the inside unit is. - Contractor's Assistant: Did you double-check the thermostat? If the compressor is working, but the fan won’t turn, then the problem is most likely with the motor and/or capacitor. Also, you may find such problems with air conditioners that are more than a decade old. Murrieta, CA 92562. Or call us for immediate assistance. Not only is a smart thermostat easier to operate than a programmable thermostat, but it can also help to reduce energy costs. places.singleplatform.com, We're currently offline. If the fan takes off and then keeps going on its own, you more than likely have a bad start capacitor. It’s important to get the fan up and running ASAP or else the home will get uncomfortable in a hurry and you could end up damaging the compressor. I hear it click but the fan does not come on. This is a problem with split AC units. Before jumping to any conclusions, you should do a little troubleshooting to try and pinpoint the source of the problem.… Continue Reading What to Do When Your A/C Compressor Won't Turn On With a new AC system, you’ll no longer have to deal with the headache of having various internal components give out—as an added bonus, you might save energy with a new system as well. I checked the heat pump outside. In the following, we’ll outline 6 potential issues to consider. If the compressor is running, but the fan motor is not running, the fan motor or the fan motor capacitor are likely at fault. When an outside fan fails, the most likely cause is a capacitor issue. This is a confusing situation when the outside ac unit not running but inside is. It thinks the room is already cold, so it stops working. The capacitor and relay are essential for the compressor to get the power it requires to operate. If the thermostat ... does not have continuity, replace it. This is a simple fix. If that be the case, you may have a dead compressor. When the refrigerant is leaking, all you have to do is using the sealant that is available in most of the car repair shops. If your air conditioner won’t work at all, there’s a good chance that something is amiss with its compressor. (2020), What is the Cost to Convert R-22 to an R-410 Refrigerant, Does your Air Conditioner use R-22 Refrigerant, Freon Air Conditioner Replacements in 2020. Capacitors store up the energy that powers the air conditioner’s fans. If your blower motor is not producing enough air for your system, or the fan is running at a low speed, that can cause the system to lose enough efficiency to make it run too much. If your AC compressor isn’t working, then your air conditioning system is going to have some trouble. These can put extreme pressure on the AC compressor and make it overheat. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in. Some units also have dual capacitors that power you air conditioner’s fans, as well as your compressor. When the fan goes down there is no way to cycle the air and thus the system is essentially stalled. The fan on the outside unit was not running. After doing so, give your system a chance to cool down, and once it’s had the chance to reset, try running your system to see if your compressor will turn on. 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