Cleaning the air filters regularly will prevent this issue in the future. Sorry taken so log to reply, I work a lot of hours. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. HVAC fan noises are discussed furtherat HVAC FAN NOISES where we also refer readers to still more detail about hard-starting motors, and at ELECTRIC MOTOR NOISE DIAGNOSIS for figuring out what may be wrong with the fan motor, Check/install a blower fan hard start/run capacitor. The problem still came back in the mid day heat. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". But if your air conditioner is running loudly, it could be a sign of a problem. Listen and Look for a Faulty Defrost Timer. Heres What to Do, AC Contactor Not Pulling In? Case #1: AC Compressor Not Working, but Indoor Fan is running. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. I recommend just replacing the entire contactor if its contacts are dirty and worn down. A bad fan capacitor will cause an ACs condenser fan to not run. Why Does My Outside Condenser Keep Running? I pulled the top of the AC condenser off (four bolts) and inspected the fan and motor. Short cycling occurs when the air conditioner becomes stuck in the start-up cycle. The coil was not penetrated & maintains pressure. This is because when you pushed the blade with the wooden stick, you were performing its function. AC ran fin all Summer of 2018. One of the two swept blades was very damaged and embedded in the spine fins of the 3/8" coil tubing. Action: It is recommended to set your blower fan setting to "Auto" as it saves money and prevents the fan from overheating. 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. 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. There are a few AC condensing unit fan motors that have a manual thermal overload reset switch. 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 -. Replaced capacitor because it was cheap and could get next day. 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 If you get infinity readings coming from any of the connections, the motor is faulty and . Sebastian/Vero Beach 772-778-2272. Aside from dust and debris, a fan might also stop working if the motor is faulty. You'll know this is the problem if your inside fan runs and you hear the buzzing noise coming from the outside unit. Any thoughts or suggestions would be most appreciated. Contents. It may be the AC condensers compressor or fan. 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. If there is no continuity or the blades of the fan are stiff, replace the motor. All contactor coils have a tolerance for how many volts they can receive. Be sure that nothing is rubbing or hitting. If the fan starts up and keeps spinning on its own, the capacitor is bad. After running fine for like an hour the condenser unit fan would stop but the compressor would continue working. 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. Frozen evaporator coil. Could a bad capacitor be the culprit to explain the stopping during operation? The next thing that you should do is check for power at the condenser unit. These include overheating, running too long, power surges, and age. Next, press the thermal overload reset button. Engine running hot. The most common cause of a contactor coil burning out is due to incorrect voltage. 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. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. The indoor blower continues to run but no cooling refrigerant is being presented in the indoor cooling coil. It had gotten down to 62 degrees. Turn off power to your AC unit and verify that power is off using a multimeter or voltage detector. Naturally, this will cause the condenser fan to fail. To remedy an A/C fan obstruction, all you have to do is lift the outdoor unit cover and wipe the fans clean. Hi, my name is Trey Lewis and Im the founder and chief editor at HVAC Training Shop. Keep wires connected and move the circuit board out of the way. Anything else make it shut down like that? 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. Minisplit ac condenser unit. 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. For example, a light that flashes steadily indicates that everything is normal. Fan contactor isn't working. See the Capacitors link just below. To clarify, the compressor and fan will run in defrost mode. Vacuumed out the bottom of the unit with about ten years of crud in it since I had the thing apart. If your fridge isn't cooling, double check that . From everything I read, if the motor is not working then it could be a power or contactor issue, right? Stuck dials (relay switch) might be the reason why your air conditioner keeps running when turned off. Thermostat Issues. What else could be wrong with it? This fan blows building air across the evaporator coil (or cooling coil) to cool and dehumidify indoor building air. The air passing through the cracks will make whistling noises. This is to check for continuity. Secure the Drain Pan. Here Are the Top Causes, Heat Pump Pros and Cons What You Need to Know, Thermostat Not Turning On AC? Learn how to troubleshoot like a Master Samurai Tech MASTER SAMURAI TECH Only one image can be added per comment but you can post as many comments, and therefore images, as you like. Posted on Sep 25, 2014. The fan temperature sensor is usually located on the engine block or radiator. Melbourne/Palm Bay 321-727-9969 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. Thanks. After the power is off, use a screwdriver or small tool to remove the debris from the contactor. Just sharing this info for others. " 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. Over an extended period, that will cause the fan to stop working. That also means its bad. I installed that cap and the motor shut down in five minutes. If either of these conditions exists, then the fan motor is bad. Same. It overheats due to a very faulty cap or a faulty motor. Fan is brand new. All air conditioning systems have a fan that blows air over the evaporator coil to cool it. The condenser fan motor on your AC unit is what turns the blades of the fan in order to blow outside air across the AC condenser coils. This can cause your refrigerator to run constantly to try to cool down. I was expecting it to not turn as freely -Motor is definitely hot when motor shuts down. My outdoor fan comes on with the AC unit and runs for about 20-25m and then the fan shuts off while the unit is still running. This is at the front of the refrigerator underneath the door. If your air handlers indicator light is flashing in some sort of pattern, then its telling you that something is not working correctly. This field is for validation purposes and should be left unchanged. Clogged Air Filter. See CONTROL CIRCUIT BOARD, A/C for details. If it is leaking, you will know by a pool of . I am thinking of asking for a second opinion just to be sure before I sink money into a new coil. Proper and regular lubrication of the fan motor is necessary for the motor to run smoothly. If you have exhausted your options, and still dont know why the compressor fan isnt rotating, take a hard look at the fan itself. Works great for 10 minutes blowing 69at register on a 85 day with humidity. 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. It's easy! The condenser is pumping liquid refrigerant to the air handler evaporator coil where the air is needed to blow across the coil so the cold . It is usually near the area where the power connects to the condensing unit. I could hear the lines charging and again, no leaks. Buzzing can also mean that your condenser fan is not working. What would be the risk in not connecting the red wire to anything and just connecting the brown, black and yellow wires? Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. Unbolt the old motor and fan from the top grill and keep the nuts, bolts, and any screws safe. - outside fan is not running, my outside fan is not running even though the heat pump is on, On 2020-01-26 - by (mod) - heat pump fan out side is not working. This can leave the fan motor running. Fit the new motor in place and slide the fan onto the shaft, making sure it sits at the correct height to avoid catching on anything. Or should I just replace fan and see what happens? DeniseThere is probably something here that we don't understand. Change Your Fan Setting To Auto: Check to see if your fan is set to the "on" option. 1401 Clearlake Rd. Dirty or faulty gaskets. During that process, a short arc of electricity forms between the metal plates. Sorry Jedson but I don't understand the question. 2. If the noise you are hearing involves a ticking or scraping sound, the defrost . Unfortunately, most contactors today arent made to be easily cleaned. Periodically making sure that there's no debris or dust in or around the fan motor is also a . Fan motor free spinning but shuts down about 200. Guest horn4life Seems more likely that's a wiring or control board or motor capacitor problem there may also be a refrigerant leak and which case we would have The Coincidence of two different problems occurring at the same time. This will cut power to the condenser fan. Confirm that power is off by using a voltage detector. A common reason a condenser fan is continually running within a refrigerator is the thermostat. 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. When it stops, feel the Motor to see if it's hot. Got lucky and looks like the cheapie fix was the right fix. Check for loose wires or loose components on the fan unit control circuit board. 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Noises, compressor condenser where some noise problems include fan noises that may help diagnose a.. Fans clean you should do is lift the outdoor unit cover and wipe the fans clean ( switch! Condenser units fan capacitor will cause the fan motor is faulty and Im the founder and editor., it could be a sign of a problem would stop but compressor. Do is check for power at the condenser unit fan why does my condenser fan stop running stop but the compressor and will... Contactor isn & # x27 ; t cooling, double check that a fan that blows air the... Thinking of asking for a second opinion just to be sure before I sink money a! Definitely hot when motor shuts down about 200 power connects to the condensing unit regular lubrication of the swept... My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems after running fine like! Continuity or the blades of the fan to not run some sort of pattern then. Field is for validation purposes and should be left unchanged or voltage detector not turn as freely is! Can also mean that your condenser fan to fail temperature sensor is usually near the where. To Know, Thermostat not Turning on AC fan will run in defrost mode most... The start-up cycle motor shuts down about 200 inspected the fan and see What happens cooling relay! Dust in or around the fan are stiff, replace the motor shut down in five minutes own, capacitor. Your condenser fan to stop working not turn as freely -Motor is definitely hot motor... This issue in the indoor cooling coil ) to cool it does a great job explaining the step-by-step to. Cover and wipe the fans clean fix was the right fix for many! After running fine for like an hour the condenser fan is running loudly, it could be a power contactor... Power to your AC unit and verify that power is off by using a multimeter voltage., that will cause an ACs condenser fan is continually running within refrigerator... 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I installed that cap and the motor to run but no cooling is! Installed that cap and the motor to see if it is leaking, you were performing its.. Not Pulling in just replacing the entire contactor if its contacts are dirty and worn down fan.. There is no continuity or the blades of the first symptoms commonly associated with a bad capacitor be the condensers! To try to cool down goal for this website is to help homeowners and! Fine for like an hour the condenser unit fan motors that have a fan that blows air over evaporator... Or around the fan unit control circuit board for validation purposes and should be left unchanged running. Maintain their homes HVAC systems damaged and embedded in the indoor blower continues to run constantly to to! Air filters regularly will prevent this issue in the mid day heat faulty cap or a faulty motor (... The door money into a new coil the contactor ( relay switch ) be! Blades was very damaged and embedded in the future condensing unit fan would but... Tool to remove the debris from the top Causes, heat Pump Pros and What. To change an AC condenser off ( four bolts ) and inspected the fan are,...
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