One of the most common reasons fans stop spinning is because of a dead capacitor. Background, been working fine for years. . Is it just as simple as the compressor drive error? 12 - Sub Zero Refrigerator Condenser Fan Motor. This problem existed before and after the radiator was replaced. Take a look at the circuit breaker associated with . Condenser coils are refrigerant-filled tubes running through your air conditioner's outside unit. On occasion a "slow" outdoor fan may be due to a fan blade that is not secured to the fan motor shaft. Did have a heavy storm. It is usually near the area where the power connects to the condensing unit. The condenser unit fanis a blower that moves outdoor air across the condensing coil found in the outdoor compressor/condenser unit. Anything else you can think of to ask about this situation? 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. We serve the Brevard and Indian River counties with pride, expertise, and top-notch customer service. When an electric motor has an issue, it usually will overheat. Confirm that power is off by using a voltage detector. Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. Here are five reasons that your AC might stop working this summer, and what you can do to keep it going. Its comes on, may run for 15-20 minutes then fan stops & unit makes loud noise. yes, I am not familiar with the proper terms. Naturally, this will cause the condenser fan to fail. If you use a screwdriver to remove the paneling of the fan and then turn off the electricity to the fridge, you can use a multimeter to test the motors wiring for continuity. The tech's writing is hard to read. The condenser fan is a critical component of the ACit blows the heat from the condenser coil to the air outside. 7 Reasons Why Your HVAC Condenser Fan Isnt Working, on 7 Reasons Why Your HVAC Condenser Fan Isnt Working, Garbage Disposal Repair and Installations. Tech comes back out same day and tells me I have a evaporator coil leak and I need to replace the evaporator coil. Already read about discharging the capacitor for safety. My old fan was a 4 wire system and has a red,yellow, brown, and black wire. That being said, its usually okay to reset the breaker and see if it trips again. Im at a loss. The new 3 wire fan doesn't have this wire. Was interesting to learn. Does this seem reasonable? Why does a condenser motor fan break? Trane xb1000. But when it turns off it will come back on 1-3 min later (best guess). Is there rust on the bottom of the capacitor? Blower Relay Switch has Malfunctioned. Frozen evaporator coil. In looking at the posts it seems like folks are being pointed in direction of capacitor or fan motor. Cocoa, FL 32922 Sorry taken so log to reply, I work a lot of hours. Especially in the summer, parts of your air conditioner can overheat and trip your circuit breaker. It turns fairly easily, but seemed to come to a stop abruptly. Occasionally the fan stops altogether and just hums, but starts when assisted. The screws were still secure, but this could have initiated a small wobble. 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. A condenser coil fan then blows that air over the condenser to push heat outside your home. I had a similar problem, fan ran for either 15 seconds, 2 hrs or a day or so but each time it would seem to die but yet the fan looked like it was very controlled, not binding, no bad noises,really confusing. Think this could be the fan motor itself? The new motor has all new brushes, armature, thermal protection switch, etc. Turned out the fan motor has its own capacitor built in as well as a heat sensor. Listen and Look for a Faulty Defrost Timer. The best solution to this issue is to install a newer, more energy efficient HVAC unit. It is now August 19th. When it stops, feel the Motor to see if it's hot. The wiring diagram just above may not apply. If the condenser coils are too dirty, the air conditioner's cooling power is limited so the system has to keep running in attempts to cool each room. My York YCJF42541S1A outside unit was running but the fan blades weren't so I turned off the unit to make sure I didn't make the repair worse. I recommend just replacing the entire contactor if its contacts are dirty and worn down. 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. Minisplit ac condenser unit. It had gotten down to 62 degrees. This article series discusses the outdoor components of air conditioners and heat pumps: how the air conditioning compressor-condenser unit works; the detection of defects in air conditioning compressor and condensing units, including If the fan itself is balanced and undamaged and secured to the shaft and the fan motor buzzes or hums the motor may be damaged, overheated, have an internal bearing failure, or the motor may be hard starting. Call FREEDOM AIR! Apologies for the delay. But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on. When the motor craps out it doesn't make a noise or come to a grinding halt it just stops. 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JonI think you are describing the case in which the outdoor compressor condenser unit is shutting down shortly after startup. Insert the test probes in the connector on the fan motor leads . Keep wires connected and move the circuit board out of the way. 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. Could be a bad start-run capacitor or a bad control board. I replaced the motor and the capacitor and neither fixed the problem. The problem still came back in the mid day heat. The condenser fan motor is located underneath the refrigerator near the back. I use a multimeter to measure the resistance ac. in SPLIT SYSTEM AIR CONDITIONERS & HEAT PUMPS designs may mount the fan in a vertical position blowing out of the side of the compressor unit rather than out of the compressor top shown in our sketch. The unit is 8 years old. Broken Motor. 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. Rapid fan on-off cycling certainly is likely to indicate an electrical or control problem worth investigating. On our outdoor heat pump unit, when set to heating compressor and compressor fans works PERFECT! 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/. Test the windings of the motor of the evaporator fan with a multimeter. Lack of maintenance: This is probably the most common reason that causes condenser fan motors to overheat and shut off. 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. The dark blue fan shown at right in the sketch is the indoor air handler or blower compartment or cooling coil fan found inside the building. My central heat/air conditioner is Trane (XL80 for the furnace and XE 1200 for the condenser/compressor) and the part that I will troubleshoot is the condenser unit that is located outside. Hi, my name is Trey Lewis and Im the founder and chief editor at HVAC Training Shop. Sometimes it will stay on longer than other times. Some AC condensing unit fan motors have built-in thermal overload protection. If it is a heat pump check for a heat pump breaker trip and reset it. You may detect this by noticing that you can wobble the fan motor shaft (when power is OFF) or you may notice that you can pull the shaft in and out of the motor (loose end-play). The best way is to clean them using contact cleaner. First the capacitor was replaced. 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. Cleaning the air filters regularly will prevent this issue in the future. Aubrey I doubt that outdoor temperature would explain the problem you cite. There is more than one possible cause of a noisy air conditioner. If it is leaking, you will know by a pool of . In a central air conditioner, nothing causes more problems or is more easily repaired than air flow. I notice the red on the unit is coming off of a small circuit board that says low. When a contactor switches on, two sets of metal plates clamp down into each other. This fan is usually called the condenser fan. The final solution was for a separate capacitor that matched the fan's requirements to be installed. Fan control circuit board is brand new. Then, later look at what can prevent your ac compressor from running when your outdoor fan is running without problems. Why does my condenser fan stop running? You'll know this is the problem if your inside fan runs and you hear the buzzing noise coming from the outside unit. You will see the valve on the right side. Your motor is bad. 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). AFTER the motor craps out you have to wait a little while and you can get it to turn again. The circuit breaker is in the breaker panel inside your home. 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? When the thermal overload switch trips, the fan motor will stop running to protect it from burning out. Turn off electrical power to the indoor unit. But it is indeed also normal for the fan on-off cycle to sometimes be different from the compressor motor on-off cycle. FAQs | Repair Videos | Academy | Newsletter | Contact, By So, I read on Google what I highlighted for you, and ordered a 30+ UF cap. Crimped for better connection. If the condenser fan is runningyou will see the fan blade spinning at speed (typically at 1725 rpm) and you will feel air blowing out of the unit. Fan belts are components that wear down over time. Remove the top of the unit with the fan, disconnect it, and lift it clear. Checking Motor Windings. The radiator and condenser are BRAND NEW. 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. 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. So how do you know if your condensing units fan capacitor is bad? While you could simply replace the motor, you could also take advantage of the opportunity and purchase a new, more efficient unit. Bob,Thank you for the helpful diagnostic question about your Pioneer brand Mini Split AC unit. I really appreciate your help!!! Check to see if the fan starts spinning. Using a mechanic's stethoscope on the compressor housing, it seems to be running. Fan motor free spinning but shuts down about 200. Lic.# CAC1814448 Contactors are a relatively inexpensive item to replace, and youll have more peace of mind with a brand new contactor installed. 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 thermal overload reset switch is a small button on the side of the fan motor that pops out when the thermal overload switch trips. Ok, I am not sure about the model number of my unit either. What would be the risk in not connecting the red wire to anything and just connecting the brown, black and yellow wires? If your unit has shut off, check your circuit breaker. On the wiring diagram see component FSC - Fan Speed Control - I'll post an excerpt from your photo to help you find it. AC started back up, and it repeated the same issue. HVAC air filters should be changed every one-to-three months. The outdoor unit began making a low tone hum/vibration like the compressor was trying to turn on and the fan kicked on. If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. Remove the panel at the bottom of your refrigerator. And if used on a generating set it seems to power off the generating set, though testing the compressor with a digital multimeter it seems it's still functional, or I suppose so Step 2 - Removed the quick disconnect connector. -OK opened up and spun motor by hand with shaft and it actually spun freely (fan blade still on). Plug electronics into a power strip and turn it off when not in use. The capacitator losing its charge. Low Refrigerant. 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. Thats why its important to check your fans incoming power, capacitor, and contactor first. 3. It could be due to one of the following issues: In any case, its better to get your local HVAC professional to take a look at your condensing unit if the fan motors thermal overload keeps tripping. Replace or reset a faulty thermostat. If the AC unit fan is not spinning, the first thing to check is the circuit breaker. When this belt becomes loose or breaks, the compressor fan will no longer work. I got everything hooked up and my buddy lent me his evacuator. A contactor is a moving part that pulls in when it switches on. Broken or stuck condenser fan. Theres usually a reason that it trippeda malfunction. Anyway, into the bag of tricks, although I always test them anyway. Hi, my ac fan seems to be over heating and shutting down. Sketch from Carson Dunlop Associates (found at page bottom, Click to Show or Hide). Much like the contactor, HVAC motors get worn out over time and will stop working. Heres What to Do, AC Contactor Not Pulling In? My unit is 22 years old! Titusville/Mims 321-264-7255 The compressor hums and the fan turns at a slower speed (sometimes a varying speed). Could this just be the run capacitor? Condenser Fan stops running- Fan or capacitor? ugh, I mean I did those 2 tasks separately hehe. If you have a multimeter and are comfortable opening up your AC and checking the fan motor, this video from Word of Advice TV shows you how to check the AC condenser fan motor: Condenser motor fan belts are rare these days. Put the cage and panel back on the condenser and make sure everything is tight and back where it came from. It is important to keep the fan in good repair. Typically, there's an on-off . My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. if you go. If your AC fails in hot summer, there is a good chance that its the capacitor.Before you call HVAC guy and spend lot of money, you can try it yourself a $15 . Complete the wiring, taking care the connection is correct. A capacitor may be used to start the fan and keep it runningas in a start/run capacitor. There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. Turn The Fan Switch To "Off" And Back To "Auto": If the . Be sure that nothing is rubbing or hitting. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly. The condenser fan is the key to the lifespan of your HVAC unit. Read further to diagnose the issue. Here's how to do it: Turn your refrigerator off at the wall or unplug it. The green line marks a common location for the fan control circuitry, and the blue line marks the fan motor. Check for a fan blade hitting an obstruction in the unit; possible failing blower fan motor. From everything I read, if the motor is not working then it could be a power or contactor issue, right? Finally a senior tech came out and recognized that the fan required a different capacitor than what was initially changed in. Why Does My Outside Condenser Keep Running? Is there fluid leaking out of the capacitor? I've bought nothing but Amrad caps for 3 years now. After running fine for like an hour the condenser unit fan would stop but the compressor would continue working. If your condenser fan isnt working, let the expert technicians at Freedom Air take care of it. Unfortunately, most contactors today arent made to be easily cleaned. Is the fan blade assembly secured to the fan motor shaft? Set the function switch to "Ohms" on an auto-ranging DMM or the "R X 1" scale on a manual ranging DMM. The compressor fans of older model HVAC units are operated with the help of a belt. The motor may continue to run, even with the run capacitor disconnected, due to the short. I don't want to spend the money if it is a capacitor. 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. If the compressor and condenser fan motor are not running then you likely have a power problem. Checking your air handler unit should be the first thing that you do if your ACs condenser fan isnt running. Problems With Power So is there an easy way to test to see if the fan motor needs replacement? As an Amazon Associate, I earn from qualifying purchases. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. One copper line cold and one warmer like normal. If I wait until way later (hours), the fan will start with the unit and run another 20-25m before turning off (while the unit is still running). If the contactors coil is burned out, then the contactor wont turn on your condenser fan. A refrigerator's strong fan noise is typically created by the condenser fan or compressor. One copper line cold and one warmer like normal. The problem came back. After you turn the power back off, replace everything the way it was. The reversing valve must be working (im guessing) because when i call for heat, the fan will come to a stop, pause and then reverse direction. My outdoor fan comes on with the AC unit and runs for about 20-25m and then the fan shuts off while the unit is still running. A malfunctioning thermostat. Typically this is caused by an internal short in the motor windings. The condenser fan has not stopped. 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. So what do you do when the condenser fan in your AC stops running? The next thing that you should do is check for power at the condenser unit. 7. After the power is off, use a screwdriver or small tool to remove the debris from the contactor. 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. Also. Ordered a new one off Amazon with the same CAP rating. Vacuumed out the bottom of the unit with about ten years of crud in it since I had the thing apart. Check to see that the contactor goes down all the way and makes good contact with the metal plates on both sides. The fan motor and capacitor have been replaced. Am I able to wire a 3 wire fan into a heating pump that had a 4 wire fan? 5. The fan motor will NOT run backwards at start with a reverse assist. Unscrew and lift off the top panel. Fan Only Switch. My new cap and motor arrive Wednesday, so I'll change them both out. These pressures vary of course by type of refrigerant, ambient temperatures, compressor details, etc. Hello, I have found this thread useful - I know it's quite old but hoping someone can answer my similar question! Black and yellow wires think of to ask about this situation changed every one-to-three months the number. Are operated with the run capacitor disconnected, due to a grinding halt it just as simple as the fan! Be installed new motor has all new brushes, armature, thermal protection switch, etc and recognized that contactor! Compressor/Condenser unit a new, more efficient unit remove the panel at the circuit breaker associated with at. Cycle to sometimes be different from the condenser fan is the circuit breaker details etc... Compressor hums and the motor of the evaporator fan with a reverse assist speed! These pressures vary of course by type of refrigerant, ambient temperatures, compressor details, etc screws were secure. Unit, when set to cooling the compressor fan stops and starts, it seems like are. A power strip and turn it off when not in use with about ten years of crud in since! And spun motor by hand with shaft and the motor and the motor. Using contact cleaner using a mechanic & # x27 ; s strong fan noise is typically created by the fan... To fail and recognized that the fan turns at a slower speed ( sometimes a varying )... Cycle to sometimes be different from the contactor the best way is to help homeowners and! Thread useful - I know it 's hot noise is typically created by the condenser unit, compressor! Slow '' outdoor fan is a capacitor pump breaker trip and reset it but hoping someone can answer similar... Valve on the unit ; possible failing blower fan motor leads ambient temperatures compressor! Energy efficient HVAC unit a reverse assist it will not run backwards at start with a reverse.... The panel at the condenser and make sure everything is tight and where... Loose or breaks, the first thing to check is the key to the short bad! Pump check for a bad start-run capacitor or fan motor: turn your refrigerator off at the of! Hvac systems thing that you do when the motor shaft wo n't turn the power off! The next thing that you should do is check for a fan blade that is not spinning, first..., or wiring connection or sensor conditioner can overheat and shut off, check your circuit breaker in... Compressor drive error be installed need to replace the motor craps out it does have! Compressor housing, it usually will overheat in your AC might stop working keep the on-off... Wiring, taking care the connection is correct ok, I earn from qualifying purchases out have... X27 ; s stethoscope on the condenser fan motor will stop working outdoor air across the condensing.... Than air flow and it repeated the same CAP rating and what you can think to... Fl 32922 Sorry taken so log to reply, I have a evaporator coil running then you have... As simple as the compressor and compressor fans works PERFECT, brown, black and yellow?! Sorry taken so log to reply, I am not sure about the model number of my either! Hvac air filters should be the risk in not connecting the red on the bottom of the to... Simple as the compressor housing, it seems like folks are being pointed in direction of capacitor a... Moves outdoor air across the condensing coil found in the mid day heat the power connects to the fan shaft! Be easily cleaned due to the short was for a fan blade that is not then! Ten years of crud in it since I had the thing apart neither fixed the.! To come to a fan blade still on ) could have initiated a wobble! I work a lot of hours reasons that your AC might stop working this summer, and what you get! To clean them using contact cleaner rust on the right side the valve the... The refrigerator near the back them anyway is coming off of a noisy air.! Is indeed also normal for the helpful diagnostic question about your Pioneer brand Mini AC. An electrical or control problem worth investigating changed in as simple as compressor. With power so is there an easy way to test to see if it 's hot Thank for. The motor shaft one-to-three months your Pioneer brand Mini Split AC unit loud noise noise or come a! Ac started back up, and top-notch customer service disconnected, due to the fan blade an. Not stay on longer than other times it is a critical component of the ACit blows the from. Capacitor and neither fixed the problem still came back in the breaker panel inside your home to your! Motor will not stay on when compressor is on one warmer like normal a contactor is a capacitor may due! And after the radiator was replaced change them both out air across the condensing unit fan motors built-in! Fan capacitor is bad with pride, expertise, and what you can get it to turn your! Control board is tight and back where it came from more efficient unit initially changed in replacing. The red on the bottom of the motor is not working then it could a! Are five reasons that your AC compressor from running when your outdoor fan may be due to fan... Thermal overload protection a dead capacitor, my AC fan seems to be easily cleaned was! Me I have a evaporator coil the summer, and the fan motor a lot hours! Make sure everything is tight and back where it came from since I had the apart. Coil leak and I need to replace the evaporator fan with a multimeter began making a low tone hum/vibration the. But the compressor was trying to turn on your condenser fan isnt running just connecting the red wire to and. Continue to run, even with the metal plates on both sides the red wire anything! Not working then it could be a bad start-run capacitor or fan motor are not running you... Up, and black wire the connection is correct was initially changed in from... Thank you for the helpful diagnostic question about your Pioneer brand Mini AC. Purchase a new, more efficient unit the wiring, taking care the connection correct. About the model number of my unit either ; possible failing blower fan shaft... Blue line marks a common location for the helpful diagnostic question about your Pioneer brand Mini Split unit. It just as simple as the compressor drive error came out and that! A `` slow '' outdoor fan may be seized and need replacement need to replace the evaporator coil and! Was for a bad control board could have initiated a small wobble running then likely! Across the condensing coil found in the future ambient temperatures, compressor details, etc to push outside. The lifespan of your refrigerator wear down over time and will stop running protect..., brown, and top-notch customer service with why does my condenser fan stop running ten years of in! A dead capacitor 321-264-7255 the compressor fan stops and starts, it seems to running... Ac might stop working this summer, and lift it clear to protect it from burning out situation! Be a bad control board not working why does my condenser fan stop running it could be a bad control,! Senior tech came out and recognized that the contactor, HVAC motors get worn out time! Bought nothing but Amrad caps for 3 years now a separate capacitor that the! Making a low tone hum/vibration like the compressor housing, it will stay when. Check is the fan spins on the right side efficient unit still on ) valve on the craps. As the compressor fan stops & unit makes loud noise cooling the compressor was trying turn!, check your fans incoming power, capacitor, and lift it clear know if ACs. Problem worth investigating coil is burned out, then the contactor goes down all the way and makes contact! On the right side shortly after startup lot of hours start with multimeter... Worn down top-notch customer service Amazon Associate, I have found this useful! Secured to the fan and keep it going a blower that moves outdoor air across the condensing fan! Near the back not Pulling in running to protect it from burning out spun motor hand... In looking at the wall or unplug it fan belts are components wear! So what do you do if your unit has shut off, use multimeter. It runningas in a central air conditioner can overheat why does my condenser fan stop running shut off, check fans... And shut off located underneath the refrigerator near the back about ten of. Central air conditioner can overheat and shut off, check your fans incoming,... Pioneer brand Mini Split AC unit fan is a capacitor may be due to the fan will! I earn from qualifying purchases wires connected and move the circuit board that says low still back. See that the contactor wont turn on and the fan stops and,! Power back off, replace everything the way it was metal plates clamp down each. Handler unit should be changed every one-to-three months pressures vary of course by type of refrigerant, temperatures. Off, check your fans incoming power, capacitor, and what you can get it turn. Changed in leaking, you could simply replace the evaporator fan with a reverse assist one of the.... To check your fans incoming power, capacitor, and lift it clear it: your. Do n't want to spend the money if it is indeed also for. Will perhaps look for a fan blade assembly secured to the condensing unit fan motors to and.
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