The unit cooled fine until late last week when we noticed it being extra warm but we have had a mild spring until the last couple of weeks. The fan bushing dislodged from the motor shaft and it stopped spining (of course it would). Heres What to Do, AC Contactor Not Pulling In? If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. Filter,and coils clean; ventsare open. Either can shut down the fan motor. More likely there is an electrical or control problem. FAQ 1. But when it turns off it will come back on 1-3 min later (best guess). I have not got that error since. Not grinding or hard to turn, but maybe not 100 percent? Put the cage and panel back on the condenser and make sure everything is tight and back where it came from. 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). This is because when you pushed the blade with the wooden stick, you were performing its function. This indicator light is connected to the units control board. If you don't have a meter they aren't all that expensive. Check the air filter to see if it needs to be replaced. The condenser fan motor itself is a part that can go bad. Homeowners often report a heat pump fan not spinning. Stephen. When the motor craps out it doesn't make a noise or come to a grinding halt it just stops. 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. Giving them a good clean should solve the problem. 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. It's free turning when I turn it with a screwdriver (not bound). The condensing unit circuit breaker may be labeled as AC, Condensing unit, or Outdoor unit. Also. When I turned it back on the fan came on. 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've included pictures of the schematic as you suggested.Really hoping this new fan is able to be used. A slow condenser fan (or air handler unit fan) could be caused by a bad start-run capacitor. My AC unit is 18 years old, and I was afraid it was hopeless, but I decided to run through your checklist, and I was able to get it cleaned up and running again. I had a problem with my Condenser unit. 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). Contents. Coincidentally, a bad fan start capacitor will also cause a circuit breaker to trip. Contact us if you have suggestions. Background, been working fine for years. Theres usually a reason that it trippeda malfunction. This is speculative. The heavy fan motor is mounted on the panel, so have a helper hold it while you install the blanket. Fan motor free spinning but shuts down about 200. Many contactor contacts get dirty after a few years of use. Your might ask for an explanation and let me know what you're told. Step Ten: Putting it Back Together. Changed compressor starter capacitor but not the dual run capacitor. Fan motor is bad. (May 20, 2015) Aubrey said:Correct. Proper and regular lubrication of the fan motor is necessary for the motor to run smoothly. three post C, F and HERM. Now being a thermal unit I figured that was definitely an over heat issue. Remove the top of the unit with the fan, disconnect it, and lift it clear. Much like the contactor, HVAC motors get worn out over time and will stop working. It starts by it self, and cools. I had a HVAC Repair company come out over 5 times trying to fix it. I did the vacuum and charge thing, meaning I hooked an evacuator pump on the system and then just opened the service valve so the R410a could fill the line set. Be sure that nothing is rubbing or hitting. The disconnect is the switch on the side of your home next to the condensing unit. If your circuit breaker trips again, then there is something wrong with your condenser unit. Trane xb1000. Is there fluid leaking out of the capacitor? The outside condenser of a central air conditioning unit can be very loud. Dirty or faulty gaskets. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. Naturally, this will cause the condenser fan to fail. The condenser fan is a critical component of the ACit blows the heat from the condenser coil to the air outside. Turn the air conditioner completely off, and call in a professional right away to diagnose the cause and prevent further damage to the system. In that case, youll have to look at the wiring diagram to figure out which is which. Whats thermal overload protection used for? Insert the test probes in the connector on the fan motor leads . Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. Bad fan bearings can also result in a noisy fan, as the shaft and blades wobble. Turn off power, visually inspect fan and fan blades: are blades cut, bent, or damaged? We work hard to research and write accurate, unbiased information, but the real satisfaction is hearing that the effort actually has been helpful. Nothing. Check for loose wires or loose components on the fan unit control circuit board. The circuit breaker has been tripped because of overheating. Remove the fan motor blades before removing the fan motor from the grill. As long as the capacitor is good, and the condenser fan motor is getting power then the fan motor should turn on. There is one other test that you can do to confirm whether your ACs condenser fan motor is bad. The service panel is the panel on the side of the condensing unit. Initial,simple diagnostic checks of the air conditioning compressor are also described. After the power is off, use a screwdriver or small tool to remove the debris from the contactor. The service panel may have some labels or stickers on it. You should be able to use a single switched or double pole switched contactor. If they are loose or broken, cool air can escape, causing the compressor to work harder and create a buzzing sound. Unscrew and lift off the top panel. Fan Selection: Depending on vehicle design, the fans may operate singly or in . There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. If it is leaking, you will know by a pool of . Fan Only Switch. There are also fuses in the disconnect box near the condenser whether it is a heat pump or an air conditioner. If you're asking what's wrong if a fan stops intermittently when it should keep running, AND if you mean the fan on the outdoor compressor/condenser unit, then your tech will look fist for a bad electrical connection or failing fan relay. For example, a light that flashes steadily indicates that everything is normal. Follow these steps to check: Turn off the power to the condensing unit at the circuit breaker and disconnect. 1401 Clearlake Rd. 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 ? Defrost or break down any ice buildup. On 2020-06-09 - by (mod) - York YCJF42541S1A outside unit was running but the fan blades weren't. Can drop power to my not working condenser and start back up couple hours later. 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. Check to see if the fan starts spinning. This will shut off your unit. The capacitator losing its charge. Its hot. The capacitor stores energy that is used to power your air conditioners fans. if you go. The fan contactor is the switch that turns the condenser fan on and off. Or should I just replace fan and see what happens? Over time, the contactor switch gets worn, and will stop providing voltage to the condenser fan. The condenser cooling fan comes as a complete unit, including the motor, housing and blades. 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. Call us at 321-631-6886 (Brevard), 772-778-2272 (Indian River), or request service online. Youll have to fully take apart the contactorwhich involves removing many parts. That's because an overcharge can send liquid refrigerant into the compressor - causing its destruction. Please bookmark this page to make it easy for you to check back for our response. Like with any mechanism, these fans can wear out, break, or become damaged. Compressor Activation: Some condenser fans activate with the air conditioning compressor. A bad fan motor can also cause the fan to turn but only abnormally slowly. Sometimes it will stay on longer than other times. Sign up for a new account in our community. Condenser fan won't stop running. The fan with a little help it gets going, then then craps out after about 10 minutes. I use a multimeter to measure the resistance ac. The coil was not penetrated & maintains pressure. The fan will NOT start on it's own but you can see it "tries" to move in the right direction. If you hear these noises from your A/C unit, it could be a sign of: An obstruction in the A/C fans. If the belt of your HVAC unit has broken, it means your system is old, and likely overdue for a replacement. 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. Set the function switch to "Ohms" on an auto-ranging DMM or the "R X 1" scale on a manual ranging DMM. The air flow is driven by a large fan (the "blower") inside the home. Case #1: AC Compressor Not Working, but Indoor Fan is running. Titusville/Mims 321-264-7255 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 Cocoa, FL 32922 I was expecting it to not turn as freely -Motor is definitely hot when motor shuts down. Then they replaced the fan motor. Low Refrigerant. Poor air conditioning performance. Easy enough to do anyway. Other compressor units such as those used. This Q&A were posted originally at FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs. AC unit (old) has been running fine until couple days ago. might the Motor run, but then over-heat after a few minutes ? A common reason a condenser fan is continually running within a refrigerator is the thermostat. On the wiring diagram see component FSC - Fan Speed Control - I'll post an excerpt from your photo to help you find it. DeniseThere is probably something here that we don't understand. A simple problem like this can also burn out a fan motor. That also means its bad. Lic.# CAC1814448 Capacitors store up the energy that powers the air conditioner's fans. see BLOWER FAN NO START NO STOP. Broken or stuck condenser fan. Am I able to wire a 3 wire fan into a heating pump that had a 4 wire fan? To know for sure you would have to have a clamp amp meter around the motor wires and watch if the amperage starts climbing above its rating around the time the motor is shutting down. Shouldn't the coil last longer than that? I installed it following the install instructions to the letter. Plumbing Lic.# CFC057957, Phone: 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. Melbourne/Palm Bay 321-727-9969 See if you can find the wiring diagram for your condenser unit - often on a sticker in the unit, or always in the IO manual for the unit. If the relay shorts or fails, it will not be able to . I have a trane heatpump. A bad fan capacitor will cause an ACs condenser fan to not run. Any suggestions? This is usually the case for air conditioners with rotary dial thermostats. 21,873 Answers. Please advice on what to do, thank you. 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. Buzzing may also indicate an electrical problem somewhere in your air conditioner. Crimped for better connection. Powered by Invision Community. Sorry Jedson but I don't understand the question. In addition, I installed a Protech 50 + 3 F dual run capacitor and a . Is it possible that this issue could be caused by the capacitor? You can check the fan setting on your thermostat. Next, press the thermal overload reset button. 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 . -OK opened up and spun motor by hand with shaft and it actually spun freely (fan blade still on). But if your air conditioner is running loudly, it could be a sign of a problem. Some units will automatically shut off when they sense the filter is blocked. Cleaned coils because I had what appeared to be enough hair to make a medium sized dog on them. Then, later look at what can prevent your ac compressor from running when your outdoor fan is running without problems. You will not receive a notification when a response to your question has been posted. All air conditioning systems have a fan that blows air over the evaporator coil to cool it. Humming fan motor usually means either a bad starting cap or a seized motor. I notice the red on the unit is coming off of a small circuit board that says low. What would be the risk in not connecting the red wire to anything and just connecting the brown, black and yellow wires? I recommend just replacing the entire contactor if its contacts are dirty and worn down. Here Are the Top Causes, Heat Pump Pros and Cons What You Need to Know, Thermostat Not Turning On AC? Since then, I bought a mini split pioneer seer 19? Complete the wiring, taking care the connection is correct. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Anyway, into the bag of tricks, although I always test them anyway. Check for a refrigerant leak. If the condenser fan doesn't when the compressor is on, then is due to one of the following reasons: Condenser fan capacitor is bad. 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. Still same, fan on condenser stops after a few. 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. The AC is OFF. 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. . It is important to keep the fan in good repair. A loose A/C fan. A detailed case of diagnosing and fixing a condenser fan that was running backwards at speed changes is discussed below at. If your outside condenser keeps running, this could be a sign of any of the following issues: Check for tripped breakers. Check the Evaporator Fan Motor. 4. Is the drive separate from the compressor? 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. 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. 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. Test the windings of the motor of the evaporator fan with a multimeter. So, I ordered a new motor and cap. When there's a loud banging as your unit runs, it's broken and needs . 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. Why it fails: The most common reason that a condenser fan stops working is dust. 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. Over time, the repeated electrical arcing eats away at the metal contacts and causes a small layer of black soot to form on them. A bent condenser fan causes stress on the blower fan motor shaft and can destroy the motor. It comes about every 10 minutes or so. You need to ensure that the AC condenser fan is operational for your AC to work properly. Lack of maintenance: This is probably the most common reason that causes condenser fan motors to overheat and shut off. My AC condenser originally had a fan problem. My heat pump has a similar issue only in reverse. Typically refrigerant leaves the compressor and enters the outdoor condensing coil at about 100 psi and about 95 degF. Take a look at the circuit breaker associated with . Unfortunately, most contactors today arent made to be easily cleaned. The problem came back. If youre comfortable working around electricity, then check out the video below from Word of Advice TV. It is now August 19th. Think this could be the fan motor itself? 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). Fan control circuit board is brand new. The air conditioner or heat pump condensing coil (shown at left) receives high pressure refrigerant gas from the compressor and cools this refrigerant gas back to a liquid state. Clogged Air Filter. The tech's writing is hard to read. We have placed cookies on your device to help make this website better. Meanwhile, I installed the old cap and the motor was cooled. When an electric motor has an issue, it usually will overheat. The new motor is a 3 wire with yellow, brown, and black. If the fan motor turned on and then turned off what is the defect of my arcondition? Upon testing the condenser motor, it runs and spins true. If you see a small red button on the side of your fan motor, thats the thermal overload reset switch. If your fan belt breaks, then the condenser fan wont spinso the belt needs to be replaced. Indeed you point out that when replacing a start/run capacitor itnisnimportant to use the proper one. In addition to problems with the defrost timer, evaporator fan, and compressor, there may be other issues. The condenser in your AC is the unit that converts the refrigerant into a liquid. Confirm that power is off by using a voltage detector. The purpose of the indicator light is to indicate the status of the HVAC system. Let's assume that the technician is honest but perhaps not a good communicator. Step Four: Check The Outdoor Unit's Disconnect.
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