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. 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? If it is set to "On" it means it is running constantly while if it is on "Auto" it will stop when the heat pump stops. 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. New motor has same specs as old motor (TradePro TP-C16-1SP2 6-wire motor) except old motor was rated at 1.2 A. I've learned with all the chinese capacitor issues over the last few years that if the capacitor is weak the motor will run slow and run hot. The heavy fan motor is mounted on the panel, so have a helper hold it while you install the blanket. Test and Replace the Fan Motor. Got lucky and looks like the cheapie fix was the right fix. A bad fan capacitor will cause an ACs condenser fan to not run. Burnt Out Motor. Took the temp at fan motor and it was over 200. Crimped for better connection. These include overheating, running too long, power surges, and age. Sorry Jedson but I don't understand the question. Other compressor units such as those used. Not sure if it's external or if it even has one. There also may be a reset button on the outside AC unit that can be pushed. The circuit breaker has been tripped because of overheating. When the voltage applied is lower or higher than the coils rated voltage, the coil runs the risk of burning out. Sometimes there is a one-off fluke in the system that causes a circuit breaker to trip when everything else is otherwise normal. My old fan was a 4 wire system and has a red,yellow, brown, and black wire. This is at the front of the refrigerator underneath the door. I then opened the service valve port to charge the line set with freon (whatever the new stuff is called). When the compressor cycles on, it also feeds a line to the condenser fan relay, running the fan. FAN, COMPRESSOR / CONDENSER UNIT at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. I think I'll try checking the ohm load on the motor. Turn the air conditioner completely off, and call in a professional right away to diagnose the cause and prevent further damage to the system. The compressor and fan runs to dry out the air blowing onto the windshield. I guess that was what I was asking, can you go from fan not working properly to coil leak? Like with any mechanism, these fans can wear out, break, or become damaged. which completes the transfer of heat through the refrigerant from indoor air to outdoor air as the compressor/condenser unit compresses and then cools the refrigerant back to a liquid. Step 1 - Turned off the circuit breaker at the main panel. Unfortunately this condition could indicate a burned-out A/C or heat pump compressor motor. Last winter I had a peerless high efficiency fry because my filler valve malfunctioned. This problem existed before and after the radiator was replaced. Ill also go over everything that you need to check in your AC condenserstep-by-step. This Q&A were posted originally at FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs. 12 - Sub Zero Refrigerator Condenser Fan Motor. The inside unit uses . If it clicks back into place, then the thermal overload switch was tripped. Take a look at the circuit breaker associated with . three post C, F and HERM. The Outdoor cooling fan (the subject of this article) moves outdoor air across the condensing coil to cool it and assist in condensing the high pressure, high temperature refrigerant gas back into a liquid.It is this process The problem came back. hello, new to here, new to heating and cooling. Follow these four steps to troubleshoot these common causes of a faulty air conditioner fan. Or should I just replace fan and see what happens? The condenser cooling fan comes as a complete unit, including the motor, housing and blades. I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. What else could be wrong with it? Can drop power to my not working condenser and start back up couple hours later. Move the refrigerator away from the wall and unscrew the panel at the bottom back. THANK YOU ALL for your input! If the button doesnt click back into place then the motor is still too hot, or there is another failure somewhere inside the fan motor. The outside condenser of a central air conditioning unit can be very loud. Make sure the door seals are properly sealed and tight. Tech came out and replaced the fan motor. Whats thermal overload protection used for? Apologies for the delay. Insert the test probes in the connector on the fan motor leads . Why Does My Outside Condenser Keep Running? see BLOWER FAN NO START NO STOP. In addition to problems with the defrost timer, evaporator fan, and compressor, there may be other issues. I really appreciate your help!!! 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. Eventually, the layer of black soot prevents the metal plates from forming contact with each other. so everything will be fine. Plumbing Lic.# CFC057957, Phone: Fan control circuit board is brand new. This is to check for continuity. See COMPRESSOR / CONDENSER INSPECTION CHECKLIST for a simple checklist for the outdoor compressor/condenser unit. Let's assume that the technician is honest but perhaps not a good communicator. 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. A bad condenser fan has the capacity to cause the refrigerator to run non-stop. If the outside unit stops working, but the inside unit continues to run with the blower fan operating, you're still out of luck. Same. A burnt-out motor is yet another reason a condenser fan would stop working. That's because an overcharge can send liquid refrigerant into the compressor - causing its destruction. Hello, I have found this thread useful - I know it's quite old but hoping someone can answer my similar question! We have placed cookies on your device to help make this website better. An internal short that is grounding the fan motor windings can leave the fan running, but abnormally slowly. You may need a new fan assembly or a few bolts tightened. Thanks for the great step by step instructions to troubleshooting. Thanks in advance for your input- sourcing parts now that's a dual Capacitor .. two sections .. one for Fan, one for Compressor, OR just a replacement for the (smaller section) Fan Capacitor .. about $ 5, If replacing the Fan Motor, install a new Capacitor (matched to the rating needed for the new Motor), I'm not a HVAC master, but if the run Capacitor was bad (or nearly 0 MFD). I say that because mine is 30 UF +0.3 cap and I bought a 50+ UF cap at 470 volts. If the compressor/condenser unit is wired with 240V (or "220 volts") as most are, an overcurrent at compressor start-up may be tripping just one leg of a two-pole breaker or one of a pair of fuses, leaving the other circuit "live". Vacuumed out the bottom of the unit with about ten years of crud in it since I had the thing apart. Changed compressor starter capacitor but not the dual run capacitor. The problem came back. Low Refrigerant. Banging. Broken Motor. I am thinking of asking for a second opinion just to be sure before I sink money into a new coil. Dodge Master. Replaced capacitor because it was cheap and could get next day. Most likely a shorted winding. it depends. Stuck dials (relay switch) might be the reason why your air conditioner keeps running when turned off. So it seems to cool very slowly. The service panel is the panel on the side of the condensing unit. Humming fan motor usually means either a bad starting cap or a seized motor. Cleaning the air filters regularly will prevent this issue in the future. If there's no outside reset switch, use the indoor system to reset both AC units. Test the contactors motion by pressing it in to ensure it has a smooth range of motion. So, I ordered a new motor and cap. Step 3 - Removed the access panel on the . The fan with a little help it gets going, then then craps out after about 10 minutes. Posted on Sep 25, 2014. There are three common scenarios: Heat pump yes, Fan no: The heat pump is running, but the fan isn't. Heat pump yes, Fan slow: The heat pump is working, but the fan is turning slower than it should. 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 -. Fan is brand new. 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 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. The fan would run for a while then stop. This can cause your refrigerator to run constantly to try to cool down. So, I read on Google what I highlighted for you, and ordered a 30+ UF cap. I'm not sure how refrigerant leak would make the fan run intermittently. OR is it more likely a problem with the motor? After you turn the power back off, replace everything the way it was. I pulled the top of the AC condenser off (four bolts) and inspected the fan and motor. I ohmed the 3 motor windings and they add up correctly. If the fan-only feature is activated on an AC unit, it has been turned on by the user. Am I able to wire a 3 wire fan into a heating pump that had a 4 wire fan? Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. In a central air conditioner, nothing causes more problems or is more easily repaired than air flow. with power removed, try turning the Motor shaft by hand..using your fingers Can you give it a twist, and it will continue for a few turns ? When the capacitor fails, the condenser fan will no longer rotate. 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. The contactor coil is the part of the contactor that switches on and off. There will also be a few wires connected to the top of the capacitor. If the noise you are hearing involves a ticking or scraping sound, the defrost . Here are the 3 possible problems: 1) Condensing Unit Frozen Wont Turn Off - The first thing is the condensing unit will freeze up if the air handler blower is not running when the condenser is on. 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. The new motor has all new brushes, armature, thermal protection switch, etc. Clean the dirty condenser coils. Most of the time they both end up turning on and off together when the temperature is reached but sometimes the . Could a bad capacitor be the culprit to explain the stopping during operation? Or see FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs for diagnostic questions that can help get the condenser fan working. This field is for validation purposes and should be left unchanged. Make sure the freezer door seals shut. I replaced the motor and the capacitor and neither fixed the problem. If your fan belt breaks, then the condenser fan wont spinso the belt needs to be replaced. Check for a refrigerant leak. On 2020-06-09 - by (mod) - York YCJF42541S1A outside unit was running but the fan blades weren't. I am not convinced the fan was fixed either the first or second visit. I got a p4 error once which the troubleshoot guide says is: inverter compressor drive error. The fan contactor is the switch that turns the condenser fan on and off. 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. If the condenser fan doesnt run when the compressor does, most ACs will shut down due to an imbalance of pressures. 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. Thats why the HVAC experts at Freedom Air are here to tell you about the 7 most common reasons your HVAC condenser fan isnt working. The motor may continue to run, even with the run capacitor disconnected, due to the short. Most air handlers and furnaces have a small flashing light on them. Though a burnt-out motor seems like a serious problem, it actually presents an excellent opportunity. What is your Model number? Not grinding or hard to turn, but maybe not 100 percent? 7. Powered by Invision Community. Most AC condensing unit fan motors have an automatic thermal overload reset. I then went online and bought a new fan for $22.00 and installed it. On 2020-03-02 by Anonymous It overheats due to a very faulty cap or a faulty motor. Ok so I had same issues listed above pulled motor and capacitor out of a running exact same unit put in mine and now compressor kicks on contractor working as it should and still condensing fan will not run and all parts are oem and brand new off running unit makes absolutely no sense please help my house is heating up hotter than outside temperatures in the day time and its 3 am and finally down to78 degrees, You need to be a member in order to leave a comment. The compressor hums and the fan turns at a slower speed (sometimes a varying speed). A faulty cooling fan relay can also negatively affect air conditioning (A/C) performance.The reason being, on most vehicles, is that the cooling fan doubles as a condenser fan.When the A/C is turned on, the fan moves air across the A/C condenser, thereby removing heat from the refrigerant, which changes from a vapor to a liquid state as it gives off heat it . Faulty electrical signals. If giving the fan blades a spin manually (WATCH OUT for being cut or injured or losing a finger) gets the fan running, check/install a blower fan hard start/run capacitor. 5. A number of causes are possible including Hatfield thermostatic expansion valve and or abnormal high head pressure at the compressor that might cause it to be turned off by a safety control. More likely there is an electrical or control problem. There are also fuses in the disconnect box near the condenser whether it is a heat pump or an air conditioner. The Unit Is Too Small or Has an Old Thermostat. AC ran fin all Summer of 2018. The outside unit doesn't turn-off when the thermostat turns-off the inside unit. Turn The Fan Switch To "Off" And Back To "Auto": If the . If it is leaking, you will know by a pool of . 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. If so, call in a professional to repair it. Does this seem reasonable? The fan does not stay off for a "long" time. AC unit (old) has been running fine until couple days ago. Hi, my name is Trey Lewis and Im the founder and chief editor at HVAC Training Shop. The parts are priced at $245 to $330, while labor could be $55 to $200, depending on your make and model. Could be a bad start-run capacitor or a bad control board. Or more likely the fan motor? -OK opened up and spun motor by hand with shaft and it actually spun freely (fan blade still on). Trane xb1000. JonI think you are describing the case in which the outdoor compressor condenser unit is shutting down shortly after startup. 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). Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. Thank you for the helpful comment. Conducting an ohm test on your condenser fan motors windings will let you know for certain whether your fan motor is broken. Sign up for a new account in our community. 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). Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. Any help would be great! However, if they're stuck, the compressor . 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. One copper line cold and one warmer like normal. Sebastian/Vero Beach 772-778-2272. Clogged air filter. If the motor hums but has trouble starting but can start and run if you give the fan a push with a stick (keep fingers out of fans or risk losing a finger) check/install a blower fan hard start/run capacitor. I got everything hooked up and my buddy lent me his evacuator. These pressures vary of course by type of refrigerant, ambient temperatures, compressor details, etc. 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 condenser fan is a critical component of the ACit blows the heat from the condenser coil to the air outside. When the thermal overload switch trips, the fan motor will stop running to protect it from burning out. Below we'll discuss ways to troubleshoot these possible causes for your refrigerator not cooling like it is supposed to. I don't mind paying for both the capacitor and the fan motor, but of course do not want to spend more than necessary. The coil was not penetrated & maintains pressure. Was interesting to learn. Is it swollen at the top? 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. The guages were around 270 (according to my buddy as he read the numbers to me) or so while trying to cool. A loose A/C fan. Some units also have dual capacitors that power you air conditioner's fans, as well as your compressor. Is there rust on the bottom of the capacitor? Fan Selection: Depending on vehicle design, the fans may operate singly or in . But it seems to me that that condition should not be for long. Turn the power back on and make sure everything works. You will see the valve on the right side. Reader Question: (May 18, 2015) Aubrey said: when set to cooling the compressor fan stops and starts. The next task is figuring out why the thermal overload tripped in the first place. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. Compressor still running. Anyway, into the bag of tricks, although I always test them anyway. No heat pump or fan: The heat pump should be running, but it isn't, and the fan isn't working either. Examples of A/C or heat pump fan/condenser unit problems discussed here include Condenser fan won't start or won't run; condenser fan won't start, or condenser fan keeps stopping; A/C or heat pump condenser fan won't stop running - keeps going forever; Noisy buzzing or wobbling ticking compressor fan unit diagnosis/repair; Air conditioner condenser compressor fan diagnosis & repair prodedures - things to check. If your fridge isn't cooling, double check that . Melbourne/Palm Bay 321-727-9969 Still same, fan on condenser stops after a few. Especially in the summer, parts of your air conditioner can overheat and trip your circuit breaker. If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. 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. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. Any idea what this could be? My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. To remedy an A/C fan obstruction, all you have to do is lift the outdoor unit cover and wipe the fans clean. The fan stops on the condenser. 1. Unfortunately, most contactors today arent made to be easily cleaned. Cut the metal rod of the motor, before putting the new motor on the grill. The four screws of the fan motor to support frame were still tight, as were the four bigger screws attaching the framing to chassis (minus spacers). It is now August 19th. Sorry taken so log to reply, I work a lot of hours. 3. No cooling, no heating. 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. Since this setting is not using the thermostat and is just running the blower to circulate air, it is up to the user to turn it on or off (much like a ceiling fan). This can leave the fan motor running. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. After running fine for like an hour the condenser unit fan would stop but the compressor would continue working. So how do you fix dirty contacts? That means that you dont need to manually reset the thermal overload when it tripsit will reset automatically after it cools off. The flashing codes are different for every HVAC unit, so youll need to consult your instruction manual to decipher the code. Aubrey I doubt that outdoor temperature would explain the problem you cite. The radiator and condenser are BRAND NEW. 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. I've bought nothing but Amrad caps for 3 years now. Not much different pitch before and after it's energized. Since then, I bought a mini split pioneer seer 19? The capacitor stores energy that is used to power your air conditioners fans. Anything else make it shut down like that? Stephen. Also, noticed the old fan wire actually has a quick connect coupler for all four wires to connect into a circuit board. Fan is still intact. Guest horn4life Finally a senior tech came out and recognized that the fan required a different capacitor than what was initially changed in. Anything else you can think of to ask about this situation? Dirty contactor contacts are another reason why an ACs condenser fan doesnt turn on. Did have a heavy storm. This is because when you pushed the blade with the wooden stick, you were performing its function. Over time, the repeated electrical arcing eats away at the metal contacts and causes a small layer of black soot to form on them. Got up this morning and it was off, but the unit was still running. 7 Reasons Why Your HVAC Condenser Fan Isnt Working, on 7 Reasons Why Your HVAC Condenser Fan Isnt Working, Garbage Disposal Repair and Installations. When it stops, feel the Motor to see if it's hot. Just sharing this info for others. " Step 2 - Removed the quick disconnect connector. Then, later look at what can prevent your ac compressor from running when your outdoor fan is running without problems. 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. Why does a condenser motor fan break? 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 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. DO NOT BUY A START/RUN CAPACITOR THAT EXCEEDS THE NUMBER OF MICRO-FARADS LISTED ON THE EXISTING CAPACITOR. Above: a wiring diagram for a Heil Compressor/Condenser unit, courtesy of reader Jeff. Tried again after washing out well. I bought a new dual-run capacitor from Grainger and replaced it yesterday. 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. Mechanical Issues. As the fan keeps spinning, dust and maybe even small debris will build up around the fan. Defrost or break down any ice buildup. Today it is at 0-40. The fan should not run with only one side powered. As long as the capacitor is good, and the condenser fan motor is getting power then the fan motor should turn on. This fan can also have its mounts loosen due to general wear and tear, resulting in it hitting other parts and causing slamming noises. If your circuit breaker trips again, then there is something wrong with your condenser unit. Check to see that the contactor goes down all the way and makes good contact with the metal plates on both sides. Naturally, this will cause the condenser fan to fail. Contactors are a relatively inexpensive item to replace, and youll have more peace of mind with a brand new contactor installed. Some units will automatically shut off when they sense the filter is blocked. Is it just as simple as the compressor drive error? A capacitor may be used to start the fan and keep it runningas in a start/run capacitor. It's easy! The air flow is driven by a large fan (the "blower") inside the home. The AC is OFF. When the motor craps out it doesn't make a noise or come to a grinding halt it just stops. But when it turns off it will come back on 1-3 min later (best guess). Any suggestions? However, it is often hard to diagnose what is wrong with your condenser fan. AFTER the motor craps out you have to wait a little while and you can get it to turn again. If it is an air conditioner check for an air conditioner breaker trip. Once you find the fan capacitor, take a look at it. ugh, I mean I did those 2 tasks separately hehe. Condenser fan won't stop running. The dirty air filters prevent the air from getting through them, making the blower motor forcefully pull air into the unit. Typically refrigerant leaves the compressor and enters the outdoor condensing coil at about 100 psi and about 95 degF. This blockage will strain your compressor fan. The condenser fan motor itself is a part that can go bad. Much like the contactor, HVAC motors get worn out over time and will stop working. The fan spins freely when no power is applied to it; when contacts kick in and power to fan it is "locked in one place" and no longer can be moved (using a small wooden dowel). Lack of maintenance: This is probably the most common reason that causes condenser fan motors to overheat and shut off. A detailed case of diagnosing and fixing a condenser fan that was running backwards at speed changes is discussed below at. might the Motor run, but then over-heat after a few minutes ? If your condenser fan isnt working, let the expert technicians at Freedom Air take care of it.
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