why does my condenser fan stop running

The average AC condenser fan replacement cost is between $300 and $425. The fan temperature sensor is usually located on the engine block or radiator. Is it possible that this issue could be caused by the capacitor? Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. Why Does My Outside Condenser Keep Running? The capacitator losing its charge. My old fan was a 4 wire system and has a red,yellow, brown, and black wire. Guest horn4life Below we'll discuss ways to troubleshoot these possible causes for your refrigerator not cooling like it is supposed to. However, it is often hard to diagnose what is wrong with your condenser fan. When your system's air filter is full of . Please advice on what to do, thank you. Fan is still intact. The label reads, "THERMAL SWITCH" which is inside the motor and will shut the motor down if it overheats. My guess is no low speed, but we need to know all circumstances in which that speed is used to assure dropping it is ok. Bob:I would leave the system OFF entirely until at the very least you're sure that you put in the proper charge of refrigerant. HVAC Training Shop is reader-supported. Here's how to do it: Turn your refrigerator off at the wall or unplug it. Read further to diagnose the issue. The best way is to clean them using contact cleaner. Is it damaged? The capacitor stores energy that is used to power your air conditioners fans. Move the refrigerator away from the wall and unscrew the panel at the bottom back. Fan motor is bad. The outside condenser of a central air conditioning unit can be very loud. 3. All of the above-listed air conditioner or heat pump components are discussed in detail throughout this website using the links at the left of these pages. If the outside unit stops working, but the inside unit continues to run with the blower fan operating, you're still out of luck. Could this just be the run capacitor? Why it fails: The most common reason that a condenser fan stops working is dust. Moral of the story: do it yourself and use the right capacitor. 1. We have placed cookies on your device to help make this website better. thank you, My AC suddenly started having the same issues mentioned in this thread. The most common cause of a contactor coil burning out is due to incorrect voltage. Bob,Thank you for the helpful diagnostic question about your Pioneer brand Mini Split AC unit. I notice the red on the unit is coming off of a small circuit board that says low. The heavy fan motor is mounted on the panel, so have a helper hold it while you install the blanket. Just sharing this info for others. " Cocoa/Merritt Island/Rockledge 321-631-6886 My unit is 22 years old! HVAC air filters should be changed every one-to-three months. Most air handlers and furnaces have a small flashing light on them. Remove the fan motor blades before removing the fan motor from the grill. Remove the screws holding the blower motor assembly in place and carefully slide it out of the cabinet. But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on. Gina Im having the exact same problem. Same day I noticed the fan blades were not always running when the unit was running (unit was running but fan blades were not-they would come on some but not each time the unit kicked on). replace with OEM motor if you can afford it and can still get it . ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". The fan motor will NOT run backwards at start with a reverse assist. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. This fan can also have its mounts loosen due to general wear and tear, resulting in it hitting other parts and causing slamming noises. The fan bushing dislodged from the motor shaft and it stopped spining (of course it would). When an electric motor has an issue, it usually will overheat. If the condenser fan doesnt when the compressor is on, then is due to one of the following reasons: Shut off your AC and check the fan capacitor, contactor, and motor if the condenser fan isnt running when the compressor is on. Crimped for better connection. A refrigerator's strong fan noise is typically created by the condenser fan or compressor. Sign up for a new account in our community. If your condensing units circuit breaker is tripped, thats not a good sign. Minor bends can be corrected manually; damaged blades need to be replaced. I'm not sure how refrigerant leak would make the fan run intermittently. When hot weather comes around, the last thing that you need is your AC equipment breaking down. This is to check for continuity. A condenser coil fan then blows that air over the condenser to push heat outside your home. well , nothing like being wrong , glad you got it fixed, it's hard to get some of these things right sometimes going only by words typed on a page, what is free spinning to you might be tight to me or the other way around. Thermostat Issues. Background, been working fine for years. The condenser unit fanis a blower that moves outdoor air across the condensing coil found in the outdoor compressor/condenser unit. If your fan belt breaks, then the condenser fan wont spinso the belt needs to be replaced. If it is leaking, you will know by a pool of . The service panel is the panel on the side of the condensing unit. I ohmed the 3 motor windings and they add up correctly. My heat pump has a similar issue only in reverse. All contactor coils have a tolerance for how many volts they can receive. I think I'll try checking the ohm load on the motor. 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 fan turns off outside and doesn't come back on until I switch the ac off and wait at least an hour or so n but it is still blowing air in the apartment. One copper line cold and one warmer like normal. Just had an older unit replaced by a new 3.5 ton inside air handler and outside condenser. DO NOT BUY A START/RUN CAPACITOR THAT EXCEEDS THE NUMBER OF MICRO-FARADS LISTED ON THE EXISTING CAPACITOR. Banging. Apologies for the delay. If the fan motor is OK one or more allen screws set into the center bushing of the blower fan itself may need to be tightened to secure the blower fan to the motor shaft. It's easy! More subtle would be a mis-adjusted or debris-clogged expansion valve or reversing valve.Note that Pioneer's mini split units come pre-charged with R410A in a volume sufficient to ccommodate refrigerant line lengths up to 25 ft. per circuit. If there's something wrong with your air conditioner that makes it shut off after just 15 minutes, it's usually one of these issues: Unit is overheating: 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 another problem. Read on to find the best solution based on the cause of the problem. Is the fan blade assembly secured to the fan motor shaft? Is it swollen at the top? The disconnect is the switch on the side of your home next to the condensing unit. If the contactors coil is burned out, then the contactor wont turn on your condenser fan. Its comes on, may run for 15-20 minutes then fan stops & unit makes loud noise. Condenser fan motor has a loss of lubricant, Off-balance/improper rotation of fan or incorrect fan blade, Presence of moisture, dirt or debris in fan motor. Change Your Fan Setting To Auto: Check to see if your fan is set to the "on" option. Is this more likely the fan bearings? Since then, I bought a mini split pioneer seer 19? Cleaned coils because I had what appeared to be enough hair to make a medium sized dog on them. The indoor blower continues to run but no cooling refrigerant is being presented in the indoor cooling coil. One of the most common reasons fans stop spinning is because of a dead capacitor. Contact us if you have suggestions. 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. Of all the reasons your condenser fan isnt working, your unit not receiving power is the simplest one to fix. You have a bad condensor fan. When the capacitor fails, the condenser fan will no longer rotate. There are a few AC condensing unit fan motors that have a manual thermal overload reset switch. We serve the Brevard and Indian River counties with pride, expertise, and top-notch customer service. If its tripped, flip the breaker to off then back to on. If the issue persists, contact a professional. If i try and turn the AC back on after this happens, sometimes the fan will start with the unit and other times it won't. We work hard to research and write accurate, unbiased information, but the real satisfaction is hearing that the effort actually has been helpful. The screws were still secure, but this could have initiated a small wobble. I've included pictures of the schematic as you suggested.Really hoping this new fan is able to be used. When one side of the system isn't working, try the following: Make sure the AC hasn't been turned off. Is there rust on the bottom of the capacitor? Anything else you can think of to ask about this situation? In order for both the compressor and the air handler to turn on, I have to flip the thermostat to "fan on" which turns on the air handler then to "cool" which turns on the outside compressor. Not much different pitch before and after it's energized. Faulty thermostat: The wiring may . Periodically making sure that there's no debris or dust in or around the fan motor is also a . Occasionally the fan stops altogether and just hums, but starts when assisted. We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest. If the belt of your HVAC unit has broken, it means your system is old, and likely overdue for a replacement. Jim, thanks so much for the very nice feedback - that's just super. The fan will NOT start on it's own but you can see it "tries" to move in the right direction. Changed compressor starter capacitor but not the dual run capacitor. If your unit has shut off, check your circuit breaker. The contactor is a switch found inside your HVAC unit that controls the voltage distributed to the compressor and condenser fan motor. Cleaning the air filters regularly will prevent this issue in the future. Am I able to wire a 3 wire fan into a heating pump that had a 4 wire fan? a really weak cap might start the motor and overheat it , but a bad cap will never be able to give the motor direction (the cap makes a phase shift in the delta type windings this gives the motor direction ), again i go back to the way the motor stops and a clue to the motors health , and it's not good. This can cause your refrigerator to run constantly to try to cool down. The compressor and fan runs to dry out the air blowing onto the windshield. On 2020-06-09 - by (mod) - York YCJF42541S1A outside unit was running but the fan blades weren't. Remove the access panel to the blower compartment. Figured I'd revamp all the cheap parts. Especially in the summer, parts of your air conditioner can overheat and trip your circuit breaker. To clarify, the compressor and fan will run in defrost mode. not an electrical genius but pretty handy. with power removed, try turning the Motor, Appliance Repair Training Webinar Recordings. A capacitor may be used to start the fan and keep it runningas in a start/run capacitor. A bent condenser fan causes stress on the blower fan motor shaft and can destroy the motor. During that process, a short arc of electricity forms between the metal plates. These include overheating, running too long, power surges, and age. It turns fairly easily, but seemed to come to a stop abruptly. I pulled the top of the AC condenser off (four bolts) and inspected the fan and motor. Lic.# CAC1814448 The condenser fan motor draws air over the condenser coils to cool them. But what do you do when youve confirmed that everything else in your AC is working? Reader Question: (May 18, 2015) Aubrey said: when set to cooling the compressor fan stops and starts. Am I barking up the wrong tree and should I be looking elsewhere? Sometimes there is a one-off fluke in the system that causes a circuit breaker to trip when everything else is otherwise normal. Did find a lose red wire on the contactor. Complete the wiring, taking care the connection is correct. Unscrew and lift off the top panel. The condenser fan has not stopped. So is there an easy way to test to see if the fan motor needs replacement? yes, I am not familiar with the proper terms. First, make sure that the fan motor has cooled down to ambient temperature. AC unit (old) has been running fine until couple days ago. Is there fluid leaking out of the capacitor? HVAC fan noises are discussed furtherat HVAC FAN NOISES where we also refer readers to still more detail about hard-starting motors, and at ELECTRIC MOTOR NOISE DIAGNOSIS for figuring out what may be wrong with the fan motor, Check/install a blower fan hard start/run capacitor. It may be the AC condensers compressor or fan. This will only directly affect your condenser fan. Ensure power to the unit is turned off. . Your might ask for an explanation and let me know what you're told. If these coils are dirty, then your air conditioner runs longer, causing the air conditioner to overheat. Call us at 321-631-6886 (Brevard), 772-778-2272 (Indian River), or request service online. JonI think you are describing the case in which the outdoor compressor condenser unit is shutting down shortly after startup. I told him to get lost because I can get a new fan for $20.00 and a motor for about $150.00 so his labor isn't worth $980.00. Hi, my name is Trey Lewis and Im the founder and chief editor at HVAC Training Shop. The system won't cool your unless both sides of the system are working. Sorry taken so log to reply, I work a lot of hours. 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?). Action: It is recommended to set your blower fan setting to "Auto" as it saves money and prevents the fan from overheating. Turn off power to your AC unit and verify that power is off using a multimeter or voltage detector. One copper line cold and one warmer like normal. FAQs | Repair Videos | Academy | Newsletter | Contact, By The condenser fan is the key to the lifespan of your HVAC unit. Please bookmark this page to make it easy for you to check back for our response. It overheats due to a very faulty cap or a faulty motor. PDo let me know what your service repair technician says. Check for tripped breakers. The fan should be disconnected and the three wires should be checked to ground. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. Stephen. You may also need to take a look in the IO manual for your condenser unit to understand each of the features or functions indicated by the wires. Step 4. Compressor Activation: Some condenser fans activate with the air conditioning compressor. That identifies what each of the wires are. hello, new to here, new to heating and cooling. 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. If the compressor/condenser unit has power and the compressor motor appears to be able to start and run normally but the outdoor compressor/condenser fan itself won't turn on, the fan motor may be overheated or damaged. Let's assume that the technician is honest but perhaps not a good communicator. Did have a heavy storm. If the fan starts up and keeps spinning on its own, the capacitor is bad. Low Refrigerant. Problems With Power There are also fuses in the disconnect box near the condenser whether it is a heat pump or an air conditioner. Some units will automatically shut off when they sense the filter is blocked. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. Check the Evaporator Fan Motor. Fan control circuit board is brand new. This is speculative. Check the freezer's compressor. If the compressor won't start and if the unit trips a breaker or blows a fuse as soon as it tries to turn on, the motor is burned out and shorted. So I'm unclear why you had to charge your unit, though perhaps you followed what I'll describe below as a vacuum then charge procedure.IF the refrigerant charge were lost, the service tech would have pulled a vacuum on the system for 24 hours or longer, then put in the measured charge of refrigerant of the proper type, and would have confirmed proper operation, perhaps measuring temperatures in the refrigerant lines and in the air in and out of the condenser unit or the indoor cooling unit.Below is an example - for other readers, of a Pioneer mini-split AC system.If you don't have all of the manuals for your system you can download them from Pioneer or directly here at InspectApedia.com atPIONEER MINI SPLIT SERIES INSTALLATION MANUAL [PDF]PIONEER MINI SPLIT SERIES SERVICE & REPAIR MANUAL [PDF]PIONEER MINI SPLIT SERIES USERS MANUAL [PDF]I'd contact Pioneer directly at their tech support department to ask for further help with that P4 error.Contact Pioneer at(800) 919-0150https://www.pioneerminisplit.com/. I really appreciate your help!!! I will contact pioneer. 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. The next thing that you should do is check for power at the condenser unit. The problem came back. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Hi, my name is Trey Lewis and Im the founder and chief editor athvactrainingshop.com. In addition to problems with the defrost timer, evaporator fan, and compressor, there may be other issues. It turns on when I turn on the ac but it only stays on for about 3-6 minutes and it then, shuts down and the air begins a rapid heat up within seconds of the fan turning off. If your outside condenser keeps running, this could be a sign of any of the following issues: Why does that happen? I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. Clean the dirty condenser coils. 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. Air Flow. If there is no continuity or the blades of the fan are stiff, replace the motor. How do you check if a fan motor is bad? Watch out: the wiring instructions and diagram for your specific air conditioner or heat pump compressor/condenser unit are model dependent. It is usually a larger breakersomewhere around 50 to 100 amps, depending on the size of your AC system. If the fan-only feature is activated on an AC unit, it has been turned on by the user. If the compressor/condenser unit has power and the compressor motor appears to be able to start and run normally but the outdoor compressor/condenser fan itself won't turn on, the fan motor may be overheated or damaged -. Condenser fan motor runs backwards. The AC's capacitors are small, cylinder components that send energy signals to power the fan motor and the rest of the AC unit. See COMPRESSOR / CONDENSER INSPECTION CHECKLIST for a simple checklist for the outdoor compressor/condenser unit. Was interesting to learn. Fan Selection: Depending on vehicle design, the fans may operate singly or in . Capacitors store up the energy that powers the air conditioner's fans. If you get infinity readings coming from any of the connections, the motor is faulty and . Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. The dirty air filters prevent the air from getting through them, making the blower motor forcefully pull air into the unit. Sometimes it will stay on longer than other times. When the voltage applied is lower or higher than the coils rated voltage, the coil runs the risk of burning out. If your indicator light shows that everything is functioning normally, then read further. Be sure that nothing is rubbing or hitting. On 2020-07-22 18:15:33.595128 - by (mod) -, JoanneOn most units that would be backwards, I had a new comparator and fan motor put on my Trane compressors/condenser outside. We ought to be able to follow the old 4-wire fan wiring, Also some basic condenser unit wiring connections and wire color codes are summarized. The fan is still cutting off and not cutting back on. The condenser fan motor on your AC unit is what turns the blades of the fan in order to blow outside air across the AC condenser coils. Or more likely the fan motor? Now the compressor comes on (freon line gets cold) however; the condenser fan is not running but humming. There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. Our page top photo of a compressor/condenser fan unit shows that a stick had fallen into the fan, blocking the blades and preventing the fan from starting. Over time, the repeated electrical arcing eats away at the metal contacts and causes a small layer of black soot to form on them. Replace a malfunctioning condenser fan motor. Inside the house is warm and could have been blowing warm air. Turn The Fan Switch To "Off" And Back To "Auto": If the . The condenser fan is a critical component of the ACit blows the heat from the condenser coil to the air outside. Got up this morning and it was off, but the unit was still running. Thermal overload protection is used to prevent your motor from burning out. Jake, the manual says the frig may run 80% . The unit is 8 years old. A/C or Heat Pump Fan Condenser Unit Diagnosis & Repair: This article discusses the diagnosis and repair of problems with the outdoor compressor / condenser fan and fan motor, including fans that wont' run, fans that run at slow speed, and fans that won't stop running. Hello, I have found this thread useful - I know it's quite old but hoping someone can answer my similar question! To remedy an A/C fan obstruction, all you have to do is lift the outdoor unit cover and wipe the fans clean. I say that because mine is 30 UF +0.3 cap and I bought a 50+ UF cap at 470 volts. Why does a condenser motor fan break? DeniseThere is probably something here that we don't understand. The contactor coil is the part of the contactor that switches on and off. There is more than one possible cause of a noisy air conditioner. Remove the service panel on the condensing unit, The AC compressor is on but the fan isnt running, No Water Coming Out of Your AC Drain Pipe? Indeed you point out that when replacing a start/run capacitor itnisnimportant to use the proper one. see BLOWER FAN NO START NO STOP. An easier way of checking your capacitor is to use a voltmeter. Shut off your AC and check the fan capacitor, contactor, and motor if the condenser fan isn't running when the compressor is on. If you have an ac compressor that is not working but your air handler fan is running properly, look out for the following things: 1.

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