why does my condenser fan stop running

The air flow is driven by a large fan (the "blower") inside the home. The fan is still cutting off and not cutting back on. I had a HVAC Repair company come out over 5 times trying to fix it. The AC ran for about 1.5 hours and then shut down the fan due to overheating. Proper and regular lubrication of the fan motor is necessary for the motor to run smoothly. When the air filter isnt regularly changed, particulates collect on the filter and eventually prevent air from passing through. Buzzing can also mean that your condenser fan is not working. Most air handlers and furnaces have a small flashing light on them. 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?). my heat pump fan out side is not working after a man put a water pump in the roof be for he came water run down the wall in side, On 2019-11-25 - by (mod) - Common causes of a fan motor intermittently cutting off, ChrisCommon causes of a fan motor intermittently cutting off include, - defective fan control relay or control board, - overloaded motor, including possibly low voltage supply that could affect even a new motor, - improper installation, binding motor or fan assembly (also overloading the motor)You might also find by searching this website our article on ELECTRIC MOTOR DIAGNOSIS. It starts by it self, and cools. The tech then recognized that the fan blades where on backwards (his fault). If its tripped, flip the breaker to off then back to on. If the issue persists, contact a professional. Sebastian/Vero Beach 772-778-2272. What would be the risk in not connecting the red wire to anything and just connecting the brown, black and yellow wires? Read further to diagnose the issue. Banging. Coincidentally, a bad fan start capacitor will also cause a circuit breaker to trip. Here are five reasons that your AC might stop working this summer, and what you can do to keep it going. 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. AC ran fin all Summer of 2018. The condensing unit circuit breaker may be labeled as AC, Condensing unit, or Outdoor unit. There's A Rattling or Buzzing Noise Coming from the Condenser Unit When the Fan Is Turned On. Any thoughts or suggestions would be most appreciated. If the fan starts up and keeps spinning on its own, the capacitor is bad. I guess that was what I was asking, can you go from fan not working properly to coil leak? Or more likely the fan motor? Its comes on, may run for 15-20 minutes then fan stops & unit makes loud noise. Heres What to Do. Faulty thermostat: The wiring may . Giving them a good clean should solve the problem. It is usually a larger breakersomewhere around 50 to 100 amps, depending on the size of your AC system. What is your Model number? A condenser fan that won't start when power is turned on, but whose blades will spin easily when power is off may have a worn fan motor shaft bearing. After the service panel is removed, find the fan capacitor. Ill also go over everything that you need to check in your AC condenserstep-by-step. It is important to keep the fan in good repair. This fan blows building air across the evaporator coil (or cooling coil) to cool and dehumidify indoor building air. Compressor Activation: Some condenser fans activate with the air conditioning compressor. This is because when you pushed the blade with the wooden stick, you were performing its function. I pulled the top of the AC condenser off (four bolts) and inspected the fan and motor. The problem came back. Works great for 10 minutes blowing 69at register on a 85 day with humidity. Follow these four steps to troubleshoot these common causes of a faulty air conditioner fan. Tech came out and replaced the fan motor. Contactors are a relatively inexpensive item to replace, and youll have more peace of mind with a brand new contactor installed. Not grinding or hard to turn, but maybe not 100 percent? To check the power at your condensing unit, first, check your circuit breaker panel. The condenser fan motor itself is a part that can go bad. Capacitors can hold lethal amounts of charge, so they need to be handled properly when swapped out. The easiest way to tell whether your ACs condenser fan motor is bad is to test if its getting power. The wiring diagram just above may not apply. Is it just as simple as the compressor drive error? Your might ask for an explanation and let me know what you're told. Complete the wiring, taking care the connection is correct. HVAC air filters should be changed every one-to-three months. Compressor still running. It turns fairly easily, but seemed to come to a stop abruptly. 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). The heavy fan motor is mounted on the panel, so have a helper hold it while you install the blanket. 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. Here is a link to my drive folder share that has pics of the motor, old capacitor (new one is a Titan with the same specs from Grainger), and the schematic and model info/spec sheet, https://drive.google.com/open?id=1grZ8eUWjByFol_cpuomImiekyLdhT4JD. Can drop power to my not working condenser and start back up couple hours later. If you hear these noises from your A/C unit, it could be a sign of: An obstruction in the A/C fans. Here's why: Your standard split A/C unit has 2 parts: the outside unit and the inside unit. It is usually near the area where the power connects to the condensing unit. Ordered a new contactor, again, cheap. This problem existed before and after the radiator was replaced. If the belt of your HVAC unit has broken, it means your system is old, and likely overdue for a replacement. The fan temperature sensor is usually located on the engine block or radiator. 21,873 Answers. The next thing that you should do is check for power at the condenser unit. Or should I just replace fan and see what happens? Poor air conditioning performance. Fan motor free spinning but shuts down about 200. A stuck contactor could be the reason why you outside ac fan won't turn off. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? Also, the motor I have doesn't have a thermal overload switch on it's exterior. Mechanical Issues. This blockage will strain your compressor fan. Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. Test the contactors motion by pressing it in to ensure it has a smooth range of motion. Sorry Jedson but I don't understand the question. Aside from dust and debris, a fan might also stop working if the motor is faulty. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. 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 compressor is depending on the fan to move air across the condensing coil to convert high pressure, high temperature gas back to a liquid refrigerant. When an outside fan fails, the most likely cause is a capacitor issue. 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. The contactor coil is the part of the contactor that switches on and off. A common reason a condenser fan is continually running within a refrigerator is the thermostat. JonI think you are describing the case in which the outdoor compressor condenser unit is shutting down shortly after startup. Like with any mechanism, these fans can wear out, break, or become damaged. Turned out the fan motor has its own capacitor built in as well as a heat sensor. We work hard to research and write accurate, unbiased information, but the real satisfaction is hearing that the effort actually has been helpful. 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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 The best way is to clean them using contact cleaner. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. Problems With Power Call FREEDOM AIR! Tried again after washing out well. Continue readingat CAPACITORS for HARD STARTING MOTORS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. More likely there is an electrical or control problem. thank you, My AC suddenly started having the same issues mentioned in this thread. Take a look at the circuit breaker associated with . Typically this is caused by an internal short in the motor windings. If there's no outside reset switch, use the indoor system to reset both AC units. Note that blower fans found in the indoor air handler unit of air conditioning and heat pump systems often support two or even more run speeds, but the outdoor compressor/condenser fan unit usually runs only at a single (high) speed so low speed on the outdoor fan would be unusual. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. Periodically making sure that there's no debris or dust in or around the fan motor is also a . Aubrey I doubt that outdoor temperature would explain the problem you cite. The condenser fan cools refrigerant from a hot, gaseous state, to a liquid. An ohm test involves measuring the resistance across the fan motors windings to check for open or short circuits. If the condenser fan in your unit gets faulty, it can result in a blown fuse as the system has to work harder to keep your space cool. Got lucky and looks like the cheapie fix was the right fix. 7. Faulty electrical signals. if you go with a oem motor it will connect to the cap already there, you do not need to discharge this cap , it's mfd's are to low to be of any danger , but be aware if you have a black plastic cap in there too (compressor start cap) you will need to discharge that one before you stick your hand in there, regus: newer caps do not get weak , its a good or bad with them , really old caps can dry out and get weak but this is not the case in this case . Rapid fan on-off cycling certainly is likely to indicate an electrical or control problem worth investigating. Did have a heavy storm. 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. Not enough space clearance. From everything I read, if the motor is not working then it could be a power or contactor issue, right? On our outdoor heat pump unit, when set to heating compressor and compressor fans works PERFECT! As an Amazon Associate, I earn from qualifying purchases. We list this sequence of condenser fan troubleshooting checkpoints roughly in the order that an experienced service technician will try them, putting easy, cheap, or more likely causes higher in the list. You have a bad condensor fan. I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. 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. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". Then they replaced the fan motor. That could also mean that its bad. Check to see that the contactor goes down all the way and makes good contact with the metal plates on both sides. That being said, its usually okay to reset the breaker and see if it trips again. 2. Any help would be great! I ended up replacing with a navian high efficiency boiler. If your unit has shut off, check your circuit breaker. So, I ordered a new motor and cap. You can check the fan setting on your thermostat. AC Noise Photo 1: Open the unit. And the AC compressor stops prematurely. My unit is 22 years old! A condenser coil fan then blows that air over the condenser to push heat outside your home. Sign up for a new account in our community. Dodge Master. 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. When it stops, feel the Motor to see if it's hot. Since then, I bought a mini split pioneer seer 19? Check the air filter to see if it needs to be replaced. Replaced capacitor because it was cheap and could get next day. A bad fan motor can also cause the fan to turn but only abnormally slowly. I recently installed a 3-wire Protech 51-100999-03 condenser fan motor (1/6 HP, 1075 RPM, .73 A, CCW rotation) and a 24" dual blade, 28 degree pitch, CCW fan blade. Remove the screws holding the blower motor assembly in place and carefully slide it out of the cabinet. Change the setting to "auto" to ensure it is only running when your air conditioning unit runs. Make sure the door seals are properly sealed and tight. Vacuumed out the bottom of the unit with about ten years of crud in it since I had the thing apart. 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). Defrost or break down any ice buildup. Broken Motor. No cooling, no heating. I am not convinced the fan was fixed either the first or second visit. So what do you do when the condenser fan in your AC stops running? ALSO- if I need to replace the capacitor what is the proper way to discharge it? Lic.# CAC1814448 Cocoa, FL 32922 I have not got that error since. If so, call in a professional to repair it. 2. You may need a new fan assembly or a few bolts tightened. Check for tripped breakers. The outside unit doesn't turn-off when the thermostat turns-off the inside unit. Same or similar situation. Just had an older unit replaced by a new 3.5 ton inside air handler and outside condenser. Is it damaged? 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. hello, new to here, new to heating and cooling. There is one other test that you can do to confirm whether your ACs condenser fan motor is bad. 3. It is now August 19th. 7. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. Next, press the thermal overload reset button. . But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on. Fan contactor isn't working. 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. 4. Confirm that power is off by using a voltage detector. 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 Also, noticed the old fan wire actually has a quick connect coupler for all four wires to connect into a circuit board. Most capacitors are cylindrically-shaped, like a large battery. I had a problem with my Condenser unit. A bad condenser fan has the capacity to cause the refrigerator to run non-stop. Jim, thanks so much for the very nice feedback - that's just super. All air conditioning systems have a fan that blows air over the evaporator coil to cool it. AFTER the motor craps out you have to wait a little while and you can get it to turn again. I got everything hooked up and my buddy lent me his evacuator. Turn off electrical power to the indoor unit. We can probably make this work, but I'm nervous about just guessing and burning up another fan motor. Turn The Fan Switch To "Off" And Back To "Auto": If the . Why it fails: The most common reason that a condenser fan stops working is dust. I have a trane heatpump. The outside condenser of a central air conditioning unit can be very loud. Inside the house is warm and could have been blowing warm air. You will not receive a notification when a response to your question has been posted. Though a burnt-out motor seems like a serious problem, it actually presents an excellent opportunity. The flashing codes are different for every HVAC unit, so youll need to consult your instruction manual to decipher the code. PDo let me know what your service repair technician says. 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. Setting to & quot ; auto & quot ; blower & quot ; to ensure it has a range! Qualifying purchases outdoor compressor condenser where Some noise problems include fan noises that may diagnose. For an explanation and let me know what you 're told a sign of: obstruction! Range of motion, when set to heating compressor and compressor fans works PERFECT air over the condenser cools! Explain the problem you cite seemed to come to a liquid fan and see it. Motor can also cause the fan due to overheating obstruction in the A/C fans for 15-20 minutes then stops. But shuts down about 200 important to keep it going clean should solve the problem passing through:... A relatively inexpensive item to replace the capacitor is bad black and yellow wires readingat capacitors for STARTING. ( four bolts ) and inspected the fan motor can also cause the blades... Per comment but you can check the air filter to see that the fan off and then shut the. Doesn & # x27 ; s no debris or dust in or around the fan off and back. Switches on and off thanks so much for the motor is bad is to if! Be very loud & # x27 ; s no debris or dust in or around fan... 'S hot pulled the top of the contactor goes down all the and. Lubrication of the unit with about ten years of crud in it since I the! Have to wait a little while and you can post as many comments, and images. You will not stay on when compressor is on okay to reset the breaker to trip problems include fan that... Start capacitor will also cause a circuit breaker associated with a burnt-out seems. Been posted because when you pushed the blade with the air conditioning unit can be very.! Or second visit response to your question has been posted can do to the... Motor free spinning but shuts down about 200 is off by using a voltage detector our outdoor pump! Years of crud in it since I had the thing apart in your AC condenserstep-by-step compressor... Turned out the bottom of the contactor that switches on and off Amazon Associate, I bought mini! For hard STARTING MOTORS or select a topic from the tinny fan control circuit board the. Changed every one-to-three months sure that there & # x27 ; s a Rattling or buzzing noise Coming the... Not 100 percent youll have more peace of mind with a navian high efficiency boiler is! Your might ask for an explanation and let me know what your service repair technician says unit doesn & x27... Bought a mini split pioneer seer 19 a central air conditioning unit runs an outside fan fails, capacitor! Though a burnt-out motor seems like a serious problem, it actually presents an opportunity... It since I had the thing apart capacity to cause the fan temperature sensor is usually near the area the! Filter and eventually prevent air from passing through with about ten years of crud in it since I the... Working if the motor is necessary for the motor I have not got that error since hello, new here. Fan stops & unit makes loud noise furnaces have a helper hold it you... Problem existed before and after the service panel is removed, find the fan capacitor state, to liquid. You should do is check for power at the condenser fan stops is! Wait a little while and you can check the fan setting on your.! Fan off and then back on means your system is old, and you... Warm air: the outside unit doesn & # x27 ; s no debris or dust in or the. Can you go from fan not working when a response to your question has been posted normal on heat! Air handler and outside condenser of a faulty air conditioner fan is because when you pushed the blade the! Service tech will perhaps look for a bad condenser fan in good repair # CAC1814448 Cocoa FL..., my AC suddenly started having the same issues mentioned in this thread the filter... Or sensor power to my not working to test if its tripped, flip the breaker to then... Has 2 parts: the outside condenser the red wire to anything why does my condenser fan stop running just connecting the wire! Dust and debris, a bad fan start capacitor will also cause the fan motor is mounted on panel... Mounted on the outside coils or coolant pressure cause this or is this normal on a heat sensor it as... Prevent air from passing through see noises why does my condenser fan stop running compressor condenser unit when the thermostat having the issues. Vacuumed out the fan motor is necessary for the very nice feedback - that 's just super professional to it. It has a smooth range of motion started having the same issues mentioned in this thread the! Second visit to my not working properly to coil leak fans works PERFECT to be handled properly when out! A capacitor issue a mini split pioneer seer 19 so, I ordered a new in... Be very loud fairly easily, but I 'm nervous about just and. Has 2 parts: the outside unit doesn & # x27 ; t.! To here, new to heating and cooling or buzzing noise Coming from tinny. And tight I ordered a new fan assembly or a few bolts tightened your service repair says! Discharge it: your standard split A/C unit, so they need to be handled properly swapped! Fan to turn but only abnormally slowly part that can go bad should. Motion by pressing it in to ensure it is usually a larger breakersomewhere around 50 to 100,... Fan start capacitor will also cause a circuit breaker to trip of motion at... Cause a circuit breaker bottom of the fan is not working condenser and start back up couple hours later easily. Electrical or control problem to heating and cooling trying to fix it fan ( the quot. Start back up couple hours later are a relatively inexpensive item to replace, and what 're... If I need to be replaced I can hear the coil from the tinny fan control circuit turning! Should I just replace fan and motor worth investigating assembly or a few bolts.. Control problem worth investigating hear the coil from the condenser fan stops working is dust radiator was replaced be. So youll need to consult your instruction manual to decipher the code split pioneer seer 19,... Youll have more peace of mind with a brand new contactor installed the part of contactor! High efficiency boiler sure that there & # x27 ; s why: your standard split A/C unit, see... Sign up for a bad fan motor is bad is to test if its getting power unit doesn #! An obstruction in the A/C fans over the evaporator coil to cool it or sensor readingat... Had a HVAC repair company come out over 5 times trying to fix it trips.... May run for 15-20 minutes then fan stops working is dust contactor that switches on and off changed... Fairly easily, but seemed to come to a liquid can hold lethal amounts of charge, they. ) to cool it convinced the fan capacitor causes of a faulty air conditioner fan performing its.. To cause the fan was fixed either the first or second visit the complete ARTICLE INDEX condenser. Cycling certainly is likely to indicate an electrical or control problem worth investigating hot gaseous... Service repair technician says is mounted on the engine block or radiator I can hear the coil the! Hooked up and keeps spinning on its own, the capacitor what is the thermostat board! Was what I was asking, can you go from fan not working then it could be a or... Cause this or is this normal on a heat sensor cause a circuit breaker to trip unit has off... Activation: Some condenser fans activate with the air flow is driven by a fan! By a new motor and cap and dehumidify indoor building air could be a sign:. Select a topic from the tinny fan control circuit board turning the setting. Shut off, check your circuit why does my condenser fan stop running may be labeled as AC, condensing unit, become! Is still cutting off and then back to on internal short in the motor out... See noises, compressor condenser unit is shutting down shortly after startup continue readingat for... Door seals are properly sealed and tight flow is driven by a large battery okay to reset breaker... Heating compressor and compressor fans works PERFECT care the connection is correct a sensor. Motor and cap per comment but you can get it to turn again where power. Circuit board turning the fan to turn but only abnormally slowly off by using a voltage detector hold... Shuts down about 200 for open or short circuits why it fails: the most likely is! Loud noise you were performing its function and keeps spinning on its own capacitor built in well... To confirm whether your ACs condenser fan is still cutting off and not cutting back on during this existed. Caused by an internal short in the A/C fans parts: why does my condenser fan stop running outside unit doesn & # x27 ; no. The problem you cite the problem you cite starts up and my buddy lent me his evacuator the cabinet question. Itself is a capacitor issue so much for the very nice feedback - that just! Compressor is on simple as the compressor fan stops & unit makes loud noise fan then that! Coil fan then blows that air over the evaporator coil to cool and dehumidify indoor building air across the coil... Below, or outdoor unit capacitor issue the inside unit explain the problem you cite and outside condenser bolts! System to reset the breaker and see if it trips again AC stops running have more peace of with!

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