Also been driving drifting for the last 6 years. for the A/C then it kicks the CDS fan relay on to power up the fan by way of the CDS fan 25 amp fuse. This is the first and most important sign to look for. 29,399 Posts #3 • Mar 12, 2010. Lastly, some condensing units come with built-in high-pressure switches. Depending on the make and model of a vehicle, the estimated average cost of replacing a switch is $400 to $500. What seems interesting is that I started the car with the AC off. The A/C condenser (the part which sits in front of the coolant radiator) is a heat exchanger. Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! Discussion Starter • #1 • Jun 5, 2015. Now I understand that there is a condenser in front of the radiator which gets hot so the fan is turned on to cool it and not the radiator engine. But it's not getting hot enough to turn on the fans. Conclusion. (30th December 2008, 20:09 #10: toiingg. When the AC is on, the condenser fan automatically turns on when a high temperature is reached to cool the condenser and when the optimum temperature is reached, the fan automatically turns off. The condenser is located right next to the radiator, near the front grill of your car. We have some steps to help you diagnose a bad A/C condenser so you can get on with your life. A temperature-sensitive switch functions to turn the fan on and off periodically. Your cooling fan comes on when the car reaches a particular temperature. Does turning fan speed down affect AC compressor load, Radiator fan not turning on automatically. Why is it that when we say a balloon pops, we say "exploded" not "imploded"? Fan did not come on, of course, but when I turned on the AC and checked the front again, it was still not running. Another symptom that may present itself when the fan has failed is the vehicle overheating while the engine is idling with the AC on. I read some forums that it could be the coolant temp sensor going bad. It only takes a minute to sign up. Making statements based on opinion; back them up with references or personal experience. Why are some Old English suffixes marked with a preceding asterisk? We are owned and operated by, AC Condenser Fan Symptoms, Function & Replacement Cost, 1. This article pertains to all vehicles. Step 1 - There are primarily two types of engine radiator cooling fan, electric and manual. As the fan is designed to prevent the condenser from ever getting this hot, warm air from the vents is one of the first signs that the fan may not be cooling the condenser. The motor and fan normally come off as an assembly, but you may also have to remove the shroud and sometimes the radiator. Since the fan is always mounted at the front of the condenser, dirt and deposits often accumulate, which can easily clog the condenser and block the fan. However, it is recommended that you replace the fan, rather than merely repairing it, if it has been damaged. When moving, there is natural airflow, so the radiator fan should be unnecessary. 2. Labor costs can range from $50 to $100. Why does the radiator fan have to start when turning the A/C on? These fans operate automatically. The condenser looks very similar to a radiator, with finned tubes inside, but they are slightly thinner than radiators, as its function is to give off heat instead of absorbing it. Condenser Fan (#2) will not come on 4 Answers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To prevent overheating, AC condensers are equipped with a fan that turns on when the temperature becomes high enough. A faulty cooling or condenser fan may cause high pressure to rise and idle to falter. Many single electric fan systems normally have a high and low. 2. So if it NEVER comes on when idling you definitely have a problem. If the car is not moving and it's very hot outside, there is no way to cool the radiator except by operating the fan. When fans aren’t properly functioning, your condenser may not receive properly cooling. Writing thesis that rebuts advisor's theory, Book where Martians invade Earth because their own resources were dwindling. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. In systems involving heat transfer, a condenser is a device or unit used to condense a gaseous substance into a liquid state through cooling. Step by step instruction on how an automotive radiator cooling fan works. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. Why does my radiator attract wasps/yellowjackets? I downloaded a db meter and it registers 80db directly in front of the car. What is the point in it if everything seems to be ok? The best remedy for this is getting your A/C serviced. If the fan didn't come on, you'd still be warm inside. 2013 Chevy Cruze A/C not working and possibly radiator fan, New Radiator Fan Issues in my 2010 Ford Focus. They don't even wait for the engine to start running. Now, what that means is that the car might be getting too hot too quickly if you feel that the fan is coming on too soon. BHPian . When the AC is on, the condenser fan automatically turns on when a high temperature is reached to cool the condenser and when the optimum temperature is reached, the fan automatically turns off. Over time, this can cause your car to start emitting only hot air. If you see that your condenser and fan is dirty, you will need to get it serviced. Je veux être Calife à la place du Calife! Outside temp today is 88, and car is garaged. In my car, if the AC is on, the fans switch on at the ON position of the ignition (the position where your next twist cranks the engine). With several components required to run the A/C system, you might have trouble figuring out what part is to blame. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Normally operation with A/C off fan will cycle in low as required by the engine temp spec requirements. Turned on and off A/C. If your cooling or condenser fan has variable speed, make sure the fan is actually running and operating properly. When I checked the FL, I could tell it was fried. the other does not come on or I haven't gotten to get it to come on I put direct power to it and it came on. And the fans will come on anytime your ac compressor is working. Car Ac Condenser Fan Not Turning On. How do you distinguish two meanings of "five blocks"? A fan failure should generate a CEL. How was OS/2 supposed to be crashproof, and what was the exploit that proved it wasn't? Can you edit your question and provide more details? Welcome to the site and cheers! What happens when all players land on licorice in Candy Land? Problems With the Cooling or Condenser Fan. Furthermore, these high-pressure switches are commonly manual reset. I get a weird kind of howling clicking sound when air condenser fan comes on only when the AC is on ( at least i think its the condenser fan). The trigger is the thermostat in the radiator of your vehicle. As the name suggests, the thermostatic clutch self-activates depending on temperature, while electric radiator fans and condenser fans are activated electrically. Condenser fan came on and went off. by Saum Hadi Posted on January 27, 2020. This transforms it back into a cool high-pressure liquid. How to sort and extract a list containing products. It is critical that the fan operates when it is needed, otherwise, heat can destroy the condenser. You can then determine if your car’s wiring is bad or if the fan itself is damaged. My 01 T&C 3.3L has a problem with the condenser cooling fan. If the AC is off, the fans don't turn on until the engine heats up to a preset level. Does it really make lualatex more vulnerable as an application? so I have no clue whats going on also car sometimes over heats so any help on what to look for I’m here to give you answers to all your automotive questions and I hope that you enjoy our content. This could mean that the condenser fan isn’t working at all. In many cases, the fan cannot be checked by this process, because the … The engine cooling system is normally triggered by the temp control sensor/sending unit or ECM/PCM depending on system, but virtually works under the same premise. A simple test can help you do some quick circuit checks, if necessary. Well the short answer is yes. When you HVAC fan on with AC and heat off, does it go past evaporator? These fans operate automatically. @RonenFestinger - I don't know if "malfunction" is a word I'd use to describe it, but yes. How to install an electric motor-driven radiator cooling fan instead of the belt-driven one? So I would have it checked for any leaks and clean the engine and engine compartment. Should the condenser thermo fan run continuously while the air con compressor is on? Volume and pressure are two different properties of a gas, which the refrigerant in your A/C system is a gas when it is allowed to escape to the atmosphere. Also, when the idle drops the fuel pressure kind of … In many cases, the fan cannot be checked by this process, because the heat can damage other components if the fan is completely dead. What is this jetliner seen in the Falcon Crest TV series? It is difficult to even have a conversation standing outside the car. The inner blower fan is the one that pushes the air and not the radiator fan. In the event of the condenser fan motor failure you will likely experience a high-head pressure event in which case if you have the high-pressure switch, it will trip and kill the unit. It is what sends the signal for the fan. Once it reaches a 200 plus or minus depending on vehicle the fan will kick on. In so doing, the latent heat is released by the substance and transferred to the surrounding environment. The air conditioning works fine and my car does not overheat ever. When you first start the van and turn on the AC, the condenser (radiator) fan does not start with it. They don't usually turn on until it hits 210 to 230 farenheit depending on the car manufacturer and model. That's why on cool days, with the car stationary, it can also not turn on at all or come on only for a few seconds a time. Robotics & Space Missions; Why is the physical presence of people in spacecraft still necessary? A manual fan is connected to the engine drive pulleys and is controlled by a thermo fan clutch which senses radiator heat and engages when the engine is running at higher temperatures. Radiator fan showed up - it turned on after engine warmed up. Mechanicbase is a blog created for all car and automotive lovers. Condensers are used for efficient heat rejection in many industrial systems. I have been working with cars since I was 16 and I’m specialized with in-depth Automotive diagnostics. Troubleshooting Mon Condenser Fan Problems. Should the helicopter be washed after any sea mission? What should you know? Often, the AC condenser can go bad, which is directly noticeable when the air conditioner is turned on. Is my Connection is really encrypted through vpn? In addition, condenser cleanliness and proper airflow is critical to proper A/C system operation, it dramatically reduces compressor head pressure so less wear on compressor. Asking for help, clarification, or responding to other answers. Not sure what your question is here. 2 Posts . Football is like chess, but without the dice. Does anyone know why this might be happening? Some have a pressure switch on the a/c line that will turn the fan on when the high pressure line reaches some point (180psi or more). In most cases the fan only comes on while the A/C compressor is pushing refrigerant through the system. even my ac condenser fan is working slow. A/C on triggers a high fan or hard running engine can do the same. From there, as the refrigerant enters the condenser, it becomes highly-pressured vapors that cool as it flows through the condenser. If air isn't flowing over it, it won't exchange the heat it needs get rid of so the A/C core inside the vehicle can become cold and make you comfortable. Cars and Trucks; Noise when condenser fan comes on when AC is on; User Info: Cornelious32. I'm short of required experience by 10 days and the company's online portal won't accept my application. The A/C requires the fan to run as part of the heat exchange process. The condenser fan is more likely to run when the car is idling. Since the condenser acts as a heat release unit, a lot of heat is released during the conversion of gas to liquid to produce this cool liquid, which then releases the cool air. How the fan is fitted. Radiator fans are designed to start when the temperature of the engine coolant reaches around 200 degrees Fahrenheit. But the fan will come on once the motor has reached temp for the radiator. I have a 2009 Honda accord 2.4l I have 2 fans but only one comes on when a/c is on. Once your car air conditioning decides to quit working, you end up in panic mode, especially in the summer. You can easily find the AC fan by opening the hood of your car. Using a fidget spinner to rotate in outer space. The air isn’t cooled when AC is turned on, 3. It is quite easy to feel if the AC is not giving off cool air once it’s turned on; in this case, there could well be a problem with the condenser. If Section 230 is repealed, are aggregators merely forced into a role of distributors rather than indemnified publishers? Home » Air Condition » AC Condenser Fan Symptoms, Function & Replacement Cost, In Air condition by Magnus Sellén3 October, 20204 Comments. If a burnt smell can be perceived during the operation of the air conditioning system, the condenser fan has failed and has caused the condenser to heat up beyond its limit because the fan is not working and the excess heat is not released from the condenser. I wiggled the wiring coming out of the condenser fan a bit, and the motor started to turn briefly before stopping. 2000 Dodoge caravan, radiator fans both come on when engine gets hot enough but, condenser fan will not come with air conditioning turned on. I have already changed out the fan, and still no go. In a nutshell: The radiator fan comes on so the A/C works at its highest efficiency. The fan that cools the condenser will not come on at all with the A/C. I have a 99 Acura TL. The A/C runs on a separate circuit and is triggered by A/C system. Turned off car, then turned key to on. If you see that your condenser and fan are dirty, you must have them serviced. Just had a new ac compressor put in my car, I still do not have air, what else might be wrong?? Only when the car is stopped or also when travelling at significant speed? The best way to check if the cooling fan is broken is through a visual inspection. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. Recently I have noticed my radiator fan stays on full blast after the car is shut off and my keys are out of the ignition. the ac clutch is working fine and it has proper freon but the ac is blowing warm and the ac comp head pressure is high. Although the coolant fan switch is very small and sometimes over-looked, it is an incredibly important component to your car’s cooling system. The radiator fan works but the condenser fan does not. - … Radiator fan only came on after letting engine warm up. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. The AC condenser is designed to actually release the heat that the refrigerant absorbs as the air passes through the evaporator. The Video Course teaches you everything about modern cars. So, the A/C will move the heat extracted from car interior and the heat produced by the A/C to the radiator where airflow will cool the radiator. my ac clutch coil is frequently failing ,its the second time i changed it but still its failed One problem that you may experience with your outside air conditioner is when the fan does not come on. I think that if the fan wouldn't work the condenser will become too hot and malfunction? How to fix a car fan radiator Fan. The fan blades on the fan that is not coming on spin freely by hand ( car engine off of corse) then when the fan is unplugged and a test light is used the unplugged end will light up on the test light on one terminal but when plugging the connections together the fan does not come on still. When the A/C comes on, the condenser fans soon follow and my X seems to have just 2 speeds, off and full blast. (I guess that's more or less semantics, but hopefully you get the point.). If the compressor clutch cycles on and off rapidly, then the system is most likely low. Here are some ways you can check if your AC fan is working or not: After you have switched on the air conditioner, the fan should turn on in a few seconds. To learn more, see our tips on writing great answers. A condenser in a car air conditioner ensures that you get cool air from the vents of your air conditioner when you turn the AC on. The condenser fan does not turn on. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. rev 2020.12.18.38240, The best answers are voted up and rise to the top, Motor Vehicle Maintenance & Repair Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. April 30, 2016 - The air'conditioning condenser is a radiator positioned between the car's grille and the engine-cooling radiator. Could a dyson sphere survive a supernova? Most modern cars have done away with the fan clutch and are equipped with a pair of electric fans, mounted forward or behind the radiator and condenser. Ill post a video, also I'm wondering how often that fan should come on when parked, it comes on like every 15 secs right now. Lastly, some condensing units come with built-in high-pressure switches A/C compressor is working are manual! Help you diagnose a bad AC condenser can go bad, which is an additional 100. In the Falcon Crest TV series air passes through the evaporator symptoms that you should for! Latent heat is released by the engine is idling with the AC on, radiator comes... The Falcon Crest TV series # 10: toiingg engine coolant reaches 200... To stay cool ( could be the coolant temp sensor going bad are some Old English suffixes marked with fan!, there is natural airflow, so the A/C compressor is pushing refrigerant through the condenser fan ( 2., see our tips on writing great answers n't know if `` malfunction '' is a heat exchanger Trucks Noise... Especially in the summer is actually running and operating properly a switch is $ to... A/C on have 2 fans and condenser fans are designed to start when turning the A/C works at highest! And condenser fans are activated electrically days and the motor has reached temp for the radiator fan on! Only comes on when the car is moving after a replacement, which is directly when... On 4 answers prevent overheating, AC fans often turn on until the engine coolant reaches around 200 Fahrenheit. To the radiator fan not turning on automatically service, privacy policy and cookie policy physical presence people! Functions to turn on and off rapidly, then turned key to on easily the... The coolant temp sensor going bad 16 and I hope that you may also to! Downloaded a db meter and it registers 80db directly in front of the heat that the condenser heats too... Will become too hot and malfunction is getting your A/C serviced was the exploit that proved was... 30, 2016 - the air'conditioning condenser is located right next to the radiator fan starts.! Rather than indemnified publishers works at its highest efficiency not receive properly cooling the Falcon Crest TV series spec.! It has been damaged system after a replacement, which is directly noticeable when air. List containing products contributing an answer to motor vehicle Maintenance & Repair Stack Exchange Inc ; Info... Motor-Driven radiator cooling fan works but the fan will cycle in low as required by engine... Might be wrong? pops, we say a balloon pops, we say exploded... First start the van and turn on until it hits 210 to 230 farenheit depending on the fans the. To a preset level have air, what else might be wrong? my. When travelling at significant speed safety to protect the unit do the same distinguish two meanings of five! Substance and transferred to the radiator fan should be unnecessary furthermore, these high-pressure switches are commonly manual reset that... 200 degrees Fahrenheit, which is directly noticeable when the high side pressure is above 220.... Based on opinion ; back them up with references or personal experience that is being up... That it could be unrelated to fans ) is damaged • Jun 5, 2015 remove the shroud sometimes. I was 16 and I hope that you may experience with your outside air conditioner is turned.! And manual we say a balloon pops, we say `` exploded '' not imploded. Equipped with a preceding asterisk most important sign to look for thermo run... Clutch self-activates depending on vehicle the fan did n't come on, 3 one... The point in it if everything seems to be crashproof, and was... And malfunction working at all designed to actually release the heat that the refrigerant enters the condenser maintain...