Or more likely the fan motor? So what do you do when the condenser fan in your AC stops running? Check for a refrigerant leak. The condenser fan is the key to the lifespan of your HVAC unit. There are a few AC condensing unit fan motors that have a manual thermal overload reset switch. Unbolt the old motor and fan from the top grill and keep the nuts, bolts, and any screws safe. It turns fairly easily, but seemed to come to a stop abruptly. Similar to your house's circuit breaker, your outdoor unit has a breaker box called the "disconnect." In case you don't know, it's mounted near the condenser on the side of the house. Apologies for the delay. Keep wires connected and move the circuit board out of the way. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? Check for tripped breakers. During that process, a short arc of electricity forms between the metal plates. The condenser fan motor draws air over the condenser coils to cool them. The dirty air filters prevent the air from getting through them, making the blower motor forcefully pull air into the unit. But when it turns off it will come back on 1-3 min later (best guess). Banging. Turn off power and assure that the fan blade is secured to the fan motor shaft. 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. In this HVAC Video, I show 5 Main Problems/Reasons why a Blower Motor Fan will Keep Running and Not Shut Off! Poor air conditioning performance. I have not got that error since. This can cause your refrigerator to run constantly to try to cool down. A/C or Heat Pump Fan Condenser Unit Diagnosis & Repair: This article discusses the diagnosis and repair of problems with the outdoor compressor / condenser fan and fan motor, including fans that wont' run, fans that run at slow speed, and fans that won't stop running. Compressor still running. I check the uF on the cap with my meter first thing. 3. The line sets didn't even get cold or hot by even a degree difference. Replaced capacitor because it was cheap and could get next day. Follow these four steps to troubleshoot these common causes of a faulty air conditioner fan. Crimped for better connection. Set the function switch to "Ohms" on an auto-ranging DMM or the "R X 1" scale on a manual ranging DMM. AC unit (old) has been running fine until couple days ago. There are also fuses in the disconnect box near the condenser whether it is a heat pump or an air conditioner. Change the setting to "auto" to ensure it is only running when your air conditioning unit runs. This will only directly affect your condenser fan. If the outside unit stops working, but the inside unit continues to run with the blower fan operating, you're still out of luck. However, it is often hard to diagnose what is wrong with your condenser fan. When an electric motor has an issue, it usually will overheat. Thank you for your response. If either of these conditions exists, then the fan motor is bad. If so, call in a professional to repair it. evaluation of air conditioner compressor noises, hard starting, lost cooling capacity, and detection of a burned out compressor or A/C compressors at or near end of their life. Is there rust on the bottom of the capacitor? Check the air filter to see if it needs to be replaced. 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 My Outside Condenser Keep Running? Melbourne/Palm Bay 321-727-9969 For most people, I recommend calling a local HVAC professional to change the capacitor. If it is an air conditioner check for an air conditioner breaker trip. Condenser fan motor runs backwards. The compressor hums and the fan turns at a slower speed (sometimes a varying speed). Not sure if it's external or if it even has one. Possible low voltage at the equipment; possible condenser unit control board circuit failure. You will see the valve on the right side. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. 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 fact that your fan is reversing direction tells me that this is a heat pump and the controls are miswired or oscillating between heating and cooling, or there's a fan wiring error - as the unit's new. This indicator light is connected to the units control board. 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). 1401 Clearlake Rd. I recommend just replacing the entire contactor if its contacts are dirty and worn down. A common reason a condenser fan is continually running within a refrigerator is the thermostat. Next, press the thermal overload reset button. If your indicator light shows that everything is functioning normally, then read further. The outside condenser of a central air conditioning unit can be very loud. Replace a malfunctioning condenser fan motor. If they are loose or broken, cool air can escape, causing the compressor to work harder and create a buzzing sound. Minor bends can be corrected manually; damaged blades need to be replaced. Hi, my ac fan seems to be over heating and shutting down. The fan stops on the condenser. After the power is off, use a screwdriver or small tool to remove the debris from the contactor. 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. On 2020-06-17 - by (mod) - Humming fan motor. Capacitor is brand new. I installed it following the install instructions to the letter. Shut off your AC and check the fan capacitor, contactor, and motor if the condenser fan isn't running when the compressor is on. if 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. Most of the time they both end up turning on and off together when the temperature is reached but sometimes the . My new cap and motor arrive Wednesday, so I'll change them both out. I am thinking of asking for a second opinion just to be sure before I sink money into a new coil. Turn off power to your AC unit and verify that power is off using a multimeter or voltage detector. 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. 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 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. Is it just as simple as the compressor drive error? Ok, I am not sure about the model number of my unit either. Help, On 2020-06-06 - by (mod) - air conditioning drags voltage, NsisUsually drawing high amos is a sign of a failing motor, The Air conditioning drags voltage and almost turns off other appliances when compressor attempts to start up The fan is blowing hot air out the sides and you feel cool air on top Is it running in the right direction, On 2020-07-13 - by (mod) - an turns off outside and doesn't come back on until I switch the ac off. The indoor blower continues to run but no cooling refrigerant is being presented in the indoor cooling coil. AC ran fin all Summer of 2018. New to this site however have an issue similar to above. All air conditioning systems have a fan that blows air over the evaporator coil to cool it. If your unit has shut off, check your circuit breaker. The next task is figuring out why the thermal overload tripped in the first place. Any thoughts or suggestions would be most appreciated. Remove the panel at the bottom of your refrigerator. This is usually the case for air conditioners with rotary dial thermostats. 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 was unsure if perhaps having the fan unit so hot might have been part of the problem and causing the fan to shut down. 7 Reasons Why Your HVAC Condenser Fan Isnt Working, on 7 Reasons Why Your HVAC Condenser Fan Isnt Working, Garbage Disposal Repair and Installations. FAQ 1. not an electrical genius but pretty handy. If the compressor and condenser fan motor are not running then you likely have a power problem. Welcome to the forums. Aside from dust and debris, a fan might also stop working if the motor is faulty. If you hear a loud rattling noise, it could be a minor issue like loose stones or debris that's caught in the condensing unit. Condenser coils are refrigerant-filled tubes running through your air conditioner's outside unit. I notice the red on the unit is coming off of a small circuit board that says low. Giving them a good clean should solve the problem. That's a new one on me, too - a bad cap causing an overheat conditionI dunno, I think there might be a bit more to this one. might the Motor run, but then over-heat after a few minutes ? 4. Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. A stuck contactor could be the reason why you outside ac fan won't turn off. Step 3 - Removed the access panel on the . Checking your air handler unit should be the first thing that you do if your ACs condenser fan isnt running. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. Also. I'm concerned that the leak in your wall could have shorted an electrical connection or electrical box device. For example, a light that flashes steadily indicates that everything is normal. When the air filter isnt regularly changed, particulates collect on the filter and eventually prevent air from passing through. Homeowners often report a heat pump fan not spinning. The green line marks a common location for the fan control circuitry, and the blue line marks the fan motor. The outdoor unit began making a low tone hum/vibration like the compressor was trying to turn on and the fan kicked on. Typically, there's an on-off . Any suggestions? The brand of the Unit is Heil with a GE motor. Nothing. hello, new to here, new to heating and cooling. See CONTROL CIRCUIT BOARD, A/C for details. What is your Model number? 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. Complete the wiring, taking care the connection is correct. On occasion a "slow" outdoor fan may be due to a fan blade that is not secured to the fan motor shaft. To check the power at your condensing unit, first, check your circuit breaker panel. Well after I took off the strap on the capacitor I noticed it has a slight bulge around by the back that I didn't notice at first. It comes about every 10 minutes or so. If a loose drain pan is causing the refrigerator to make loud noises from the bottom, this is an easy fix. three post C, F and HERM. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. Stephen. See COMPRESSOR / CONDENSER INSPECTION CHECKLIST for a simple checklist for the outdoor compressor/condenser unit. Fan control circuit board is brand new. The final solution was for a separate capacitor that matched the fan's requirements to be installed. The fan contactor is the switch that turns the condenser fan on and off. If the fan motor is OK one or more allen screws set into the center bushing of the blower fan itself may need to be tightened to secure the blower fan to the motor shaft. An HVAC technician will need to inspect the outdoor fan assembly and make sure it is tightly secured and working properly. These pressures vary of course by type of refrigerant, ambient temperatures, compressor details, etc. A contactor is a moving part that pulls in when it switches on. The fan motor and capacitor have been replaced. Fan motor is bad. Is it swollen at the top? Though a burnt-out motor seems like a serious problem, it actually presents an excellent opportunity. 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 . 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? Unfortunately this condition could indicate a burned-out A/C or heat pump compressor motor. 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. Your might ask for an explanation and let me know what you're told. If it is leaking, you will know by a pool of . 21,873 Answers. Since then, I bought a mini split pioneer seer 19? Some units will automatically shut off when they sense the filter is blocked. Using a mechanic's stethoscope on the compressor housing, it seems to be running. 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 I've included pictures of the schematic as you suggested.Really hoping this new fan is able to be used. The most common cause of a contactor coil burning out is due to incorrect voltage. We have no relationship with advertisers, products, or services discussed at this website. Make sure the freezer door seals shut. 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 easiest way to tell whether your ACs condenser fan motor is bad is to test if its getting power. Ordered a new contactor, again, cheap. You need to ensure that the AC condenser fan is operational for your AC to work properly. If the compressor won't start and if the unit trips a breaker or blows a fuse as soon as it tries to turn on, the motor is burned out and shorted. The circuit breaker is in the breaker panel inside your home. First, make sure that the fan motor has cooled down to ambient temperature. Am I barking up the wrong tree and should I be looking elsewhere? You may need a new fan assembly or a few bolts tightened. Its comes on, may run for 15-20 minutes then fan stops & unit makes loud noise. Last winter I had a peerless high efficiency fry because my filler valve malfunctioned. When one side of the system isn't working, try the following: Make sure the AC hasn't been turned off. The heavy fan motor is mounted on the panel, so have a helper hold it while you install the blanket. On 2020-03-02 by Anonymous Replace the blade, taking care not to bend it. 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. 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. Of all the reasons your condenser fan isnt working, your unit not receiving power is the simplest one to fix. I have a trane heatpump. Posted on Sep 25, 2014. The wiring diagram just above may not apply. Lack of maintenance: This is probably the most common reason that causes condenser fan motors to overheat and shut off. You'll know this is the problem if your inside fan runs and you hear the buzzing noise coming from the outside unit. If the fan-only feature is activated on an AC unit, it has been turned on by the user. Step 1 - Turned off the circuit breaker at the main panel. so everything will be fine. Fan contactor isn't working. 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