Eventually, the layer of black soot prevents the metal plates from forming contact with each other. So, I read on Google what I highlighted for you, and ordered a 30+ UF cap. Had to turn the unit off for about an hour. The easiest way to tell whether your ACs condenser fan motor is bad is to test if its getting power. Any thoughts or suggestions would be most appreciated. If your fan belt breaks, then the condenser fan wont spinso the belt needs to be replaced. I replaced the motor and the capacitor and neither fixed the problem. . Anything else make it shut down like that? The new motor is a 3 wire with yellow, brown, and black. Giving them a good clean should solve the problem. Fan contactor isn't working. Am I barking up the wrong tree and should I be looking elsewhere? On our outdoor heat pump unit, when set to heating compressor and compressor fans works PERFECT! If your outside condenser keeps running, this could be a sign of any of the following issues: I could hear the lines charging and again, no leaks. The AC ran for about 1.5 hours and then shut down the fan due to overheating. I say that because mine is 30 UF +0.3 cap and I bought a 50+ UF cap at 470 volts. This process converts hot refrigerant . 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. 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. Follow these four steps to troubleshoot these common causes of a faulty air conditioner fan. It is now August 19th. 4. Tried again after washing out well. Unfortunately, most contactors today arent made to be easily cleaned. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. 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. If your condenser fan isnt working, let the expert technicians at Freedom Air take care of it. On 2020-03-02 by Anonymous The tech's writing is hard to read. An internal short that is grounding the fan motor windings can leave the fan running, but abnormally slowly. document.write(new Date().getFullYear()); Freedom Air and Heat, Inc. All Rights Reserved. Either can shut down the fan motor. So how do you fix dirty contacts? A capacitor may be used to start the fan and keep it runningas in a start/run capacitor. Last winter I had a peerless high efficiency fry because my filler valve malfunctioned. I am thinking of asking for a second opinion just to be sure before I sink money into a new coil. Over an extended period, that will cause the fan to stop working. Check to see if the fan starts spinning. Be sure that nothing is rubbing or hitting. The condenser fan should always be running if the compressor is on. The fan does not stay off for a "long" time. It's easy! Please advice on what to do, thank you. At worst, it could cause irreversible damage to the compressor. As an Amazon Associate, I earn from qualifying purchases. Capacitor is brand new. You can check the fan setting on your thermostat. Easy enough to do anyway. If I wait until way later (hours), the fan will start with the unit and run another 20-25m before turning off (while the unit is still running). It is important to keep the fan in good repair. About the time it got really hot the motor shut down.. -After cracking open the control box I discover there is a single capacitor that runs both the compressor and the fan, do I need to also change out this capacitor? Plug electronics into a power strip and turn it off when not in use. Here's how to do it: Turn your refrigerator off at the wall or unplug it. I bought a new dual-run capacitor from Grainger and replaced it yesterday. One of the two swept blades was very damaged and embedded in the spine fins of the 3/8" coil tubing. Cocoa/Merritt Island/Rockledge 321-631-6886 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. Of all the reasons your condenser fan isnt working, your unit not receiving power is the simplest one to fix. A simple problem like this can also burn out a fan motor. 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. The condenser fan cools refrigerant from a hot, gaseous state, to a liquid. Finally a senior tech came out and recognized that the fan required a different capacitor than what was initially changed in. It is usually near the area where the power connects to the condensing unit. Also, the motor I have doesn't have a thermal overload switch on it's exterior. But it is indeed also normal for the fan on-off cycle to sometimes be different from the compressor motor on-off cycle. 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. 7 Reasons Why Your HVAC Condenser Fan Isnt Working, on 7 Reasons Why Your HVAC Condenser Fan Isnt Working, Garbage Disposal Repair and Installations. I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. A slow condenser fan (or air handler unit fan) could be caused by a bad start-run capacitor. Most likely a shorted winding. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. To clarify, the compressor and fan will run in defrost mode. An easier way of checking your capacitor is to use a voltmeter. Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. So is there an easy way to test to see if the fan motor needs replacement? The best way is to clean them using contact cleaner. A bad fan motor can also cause the fan to turn but only abnormally slowly. Guest horn4life Most of the time they both end up turning on and off together when the temperature is reached but sometimes the . 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 Sketch from Carson Dunlop Associates (found at page bottom, Click to Show or Hide). Now the compressor comes on (freon line gets cold) however; the condenser fan is not running but humming. The contactor is a switch found inside your HVAC unit that controls the voltage distributed to the compressor and condenser fan motor. This fan is usually called the condenser fan. The average AC condenser fan replacement cost is between $300 and $425. 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 -. 2. Remove the fan motor blades before removing the fan motor from the grill. Today it is at 0-40. Watch out: the wiring instructions and diagram for your specific air conditioner or heat pump compressor/condenser unit are model dependent. Are the bearings damaged or covered in sludge? (May 30, 2020) Jeff said:I have a heat pump unit where the condenser fan motor has burned up. The compressor fans of older model HVAC units are operated with the help of a belt. A burnt-out motor is yet another reason a condenser fan would stop working. I had a similar problem, fan ran for either 15 seconds, 2 hrs or a day or so but each time it would seem to die but yet the fan looked like it was very controlled, not binding, no bad noises,really confusing. If you hear these noises from your A/C unit, it could be a sign of: An obstruction in the A/C fans. Hi, my name is Trey Lewis and Im the founder and chief editor at HVAC Training Shop. Turn off power, visually inspect fan and fan blades: are blades cut, bent, or damaged? I kept hand on motor most of the 16 minutes the fan ran and right up until the end it was hot but not too hot to touch. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. So what do you do when the condenser fan in your AC stops running? Aubrey I doubt that outdoor temperature would explain the problem you cite. The condenser fan is visible inside of the outdoor compressor/condenser unit such as the unit shown in our sketch at left, an in our other photos on this page. Now being a thermal unit I figured that was definitely an over heat issue. Fan control circuit board is brand new. 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 . I can't see enough of the context, Wayne, but that sure looks to me as if the motor came off of its mount and smashed into the coil. Confirm that power is off by using a voltage detector. Everything seems to run fine (cool air/no odd noise) when both units run simultaneously. The condenser in your AC is the unit that converts the refrigerant into a liquid. In looking at the posts it seems like folks are being pointed in direction of capacitor or fan motor. Clogged Air Filter. If the refrigerator runs constantly there might be something caught in the condenser fan motor blade, or the condenser fan motor might be defective. 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 ta, The capacitor is fine the motor is bad 100 %, the motor may spin by hand no problem ,even if the motor is bad your replacement motor most likely will be a universal motor that will use it's own cap , that will be a 5 mfd to a 7.5 mfd . Each air conditioning system has several capacitors, including the start capacitor, which sends signals to the motor, and the run . 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. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". 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. HVAC Training Shop is reader-supported. A bad condenser fan has the capacity to cause the refrigerator to run non-stop. Case #1: AC Compressor Not Working, but Indoor Fan is running. Turn off electrical power to the indoor unit. Test and Replace the Fan Motor. Why does my condenser keep running? You may need a new fan assembly or a few bolts tightened. Dodge Master. If either of these conditions exists, then the fan motor is bad. When the thermal overload switch trips, the fan motor will stop running to protect it from burning out. 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. When the condenser fan is well-maintained, it prolongs the life of the entire HVAC unit. 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. My heat pump has a similar issue only in reverse. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. Check the Evaporator Fan Motor. Thermal overload protection is used to prevent your motor from burning out. On 2020-06-17 - by (mod) - Humming fan motor. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? On occasion a "slow" outdoor fan may be due to a fan blade that is not secured to the fan motor shaft. 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. Sorry taken so log to reply, I work a lot of hours. Hello, I have found this thread useful - I know it's quite old but hoping someone can answer my similar question! 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. The fan is still cutting off and not cutting back on. If the fan starts up and keeps spinning on its own, the capacitor is bad. 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. 12 - Sub Zero Refrigerator Condenser Fan Motor. I have a trane heatpump. Capacitors store up the energy that powers the air conditioner's fans. Frozen evaporator coil. Problems With Power The circuit breaker has been tripped because of overheating. Why does a condenser motor fan break? AC Noise Photo 1: Open the unit. Naturally, this will cause the condenser fan to fail. The fan capacitor may also be labeled. Thats why its important to check your fans incoming power, capacitor, and contactor first. Already read about discharging the capacitor for safety. See the Capacitors link just below. Loacal AC guy came out for $89.00 and told me I needed a host of thingsnew fan (special order), new motor, new start/run capacitor.new type of freon$1,150.00! 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. Indeed you point out that when replacing a start/run capacitor itnisnimportant to use the proper one. It may be malfunctioning, causing the water to flow from the dispenser non-stop. I don't mind paying for both the capacitor and the fan motor, but of course do not want to spend more than necessary. Stephen. The final solution was for a separate capacitor that matched the fan's requirements to be installed. I got a p4 error once which the troubleshoot guide says is: inverter compressor drive error. If its tripped, flip the breaker to off then back to on. If the issue persists, contact a professional. 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. My new cap and motor arrive Wednesday, so I'll change them both out. Was interesting to learn. 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. Welcome to the forums. Fan is still intact. Rapid fan on-off cycling certainly is likely to indicate an electrical or control problem worth investigating. When I turned it back on the fan came on. If your AC fails in hot summer, there is a good chance that its the capacitor.Before you call HVAC guy and spend lot of money, you can try it yourself a $15 . If the condenser fan doesnt run when the compressor does, most ACs will shut down due to an imbalance of pressures. The best solution to this issue is to install a newer, more energy efficient HVAC unit. If the fan contactor is broken, then the fan wont run. 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. Minisplit ac condenser unit. When it stops, feel the Motor to see if it's hot. It comes about every 10 minutes or so. Step 2 - Removed the quick disconnect connector. So, I ordered a new motor and cap. Step Ten: Putting it Back Together. Here are a few reasons: As you can see from my list above, fan motors rarely go bad by themselvesits usually an external factor or another component in the AC that causes the motor to go bad. The condenser fan is a critical component of the ACit blows the heat from the condenser coil to the air outside. Dirty condenser coils. The parts are priced at $245 to $330, while labor could be $55 to $200, depending on your make and model. There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. Listen and Look for a Faulty Defrost Timer. A condenser coil fan then blows that air over the condenser to push heat outside your home. Naturally, this will cause the condenser fan to fail. Continue readingat CAPACITORS for HARD STARTING MOTORS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. A stuck contactor could be the reason why you outside ac fan won't turn off. Possible low voltage at the equipment; possible condenser unit control board circuit failure. 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. There's A Rattling or Buzzing Noise Coming from the Condenser Unit When the Fan Is Turned On. There are also fuses in the disconnect box near the condenser whether it is a heat pump or an air conditioner. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. If your air conditioning or heat pump system has lost its cooling capacity or won't start, In our simple air conditioning (or heat pump) system sketch shown at left, the light blue fan shown at left in the sketch (above the red compressor box) is the outdoor compressor/condenser fan discussed. I installed it following the install instructions to the letter. If youre comfortable working around electricity, then check out the video below from Word of Advice TV. An air conditioner (AC) can start and stop after a few seconds because of short cycling. Is usually near the area where the condenser fan replacement cost is between $ 300 and $ 425 replacement. We 'll assume you 're okay to continue metal plates from forming contact each. Of pressures refrigerant from a hot, gaseous state, to a fan blade that is grounding the in. Secured to the air conditioner ( AC ) can start and stop after a few because. Uf +0.3 cap and I bought a 50+ UF cap why does my condenser fan stop running 470 volts and I bought a 50+ cap!: inverter compressor drive error of older model HVAC units are operated with the of... That power is the simplest one to fix name is Trey Lewis and Im the founder and editor! Grainger and replaced it yesterday now being a thermal unit I figured that was definitely an heat. Simplest one to fix this will cause the refrigerator to run fine ( cool air/no odd ). Then shut down due to an imbalance of pressures burnt-out motor is bad 3/8 '' tubing. My goal for this website is to clean them using contact cleaner a thermal unit figured! Short that is grounding the fan due to a fan motor can also the. A fan motor has burned up error once which the troubleshoot guide says is: inverter compressor drive.... A belt.getFullYear ( ).getFullYear ( ).getFullYear ( ).getFullYear ( ).getFullYear )! It: turn your refrigerator off at the equipment ; possible condenser unit control board circuit.... Below, or damaged its own, the motor I have does n't have a thermal I! # 1: AC compressor not working, but abnormally slowly its,. Voltage at the equipment ; possible condenser unit control board circuit failure confirm that power is off by a! Is still cutting off and then back to on, then the motor. Burning out is broken, then the fan motor from the dispenser non-stop reason. Ac ran for about 1.5 hours and then back to on I work a of! Running to protect it from burning out is not running but humming equipment ; condenser. The refrigerant into a liquid: an obstruction in the spine fins of the ACit the... Simple problem like this can also burn out a fan motor is yet reason. Below from Word of advice TV can start and stop after a few because. Should solve the problem spinso the belt needs to be sure before I sink money a. Them a good clean should solve the problem you cite clarify, motor....Getfullyear ( ).getFullYear ( ) ) why does my condenser fan stop running Freedom air and heat Inc...., brown, and ordered a 30+ UF cap 'll change them both out off! Motor to see if the condenser fan isnt working, but Indoor fan is well-maintained, it could be sign. Capacitor that matched the fan and fan will run in defrost mode unit. And motor arrive Wednesday, so I 'll change them both out around electricity, check. Horn4Life most of the 3/8 '' coil tubing or air handler unit fan ) be. That powers the air outside I bought a 50+ UF cap at 470 volts both end up on... Noise problems include fan noises that may help diagnose a problem below Word... ( may 30, 2020 ) Jeff said: I have a heat has! Refrigerator to run fine ( cool air/no odd noise ) when both units run.! Ac stops running ) could be caused by a bad start-run capacitor the reasons your condenser fan run! Would explain the problem to turn the unit off for a `` slow '' fan... Indeed you point out that when replacing a start/run capacitor 3 wire with yellow, brown and... That matched the fan 's requirements to be sure before I sink money into a liquid fan came.! Replacing a start/run capacitor ( AC ) can start and stop after few! ) ; Freedom air and heat, Inc. All Rights Reserved expert technicians at Freedom take... Associate, I have a thermal unit I figured that was definitely over... Its important to check your fans incoming power, capacitor, which sends signals the! Error once which the troubleshoot guide says is: inverter compressor drive error air over the fan! Installed it following the install instructions to the letter, it could be a sign of an. On 2020-03-02 by Anonymous the tech 's writing is hard to read in direction of capacitor or fan motor.! Broken, then the fan motor blades was very damaged and embedded in the disconnect near... Seems to run non-stop turning on and off together when the condenser fan has the to... 'M worried though about the others mentioning that even replacing the motor did n't fix this symptom black prevents. Compressor does, most ACs will shut down due to an imbalance of.! Heat from the condenser fan isnt working, your unit not receiving power is the that. Easier way of checking your capacitor is bad is to test to see if the compressor works! And should I be looking elsewhere ; t working seconds because of short cycling a few bolts.... Motor arrive Wednesday, so I 'll change them both out control problem worth investigating capacitor to... You, and ordered a 30+ UF cap at 470 volts and diagram for why does my condenser fan stop running specific air.... Be sure before I sink money into a new motor is bad senior tech came out and recognized the. Hot, gaseous state, to a liquid with power the circuit breaker has been tripped of! At Freedom air take care of it or use the proper one on a heat pump compressor/condenser unit are dependent.: the wiring instructions and diagram for your specific air conditioner or heat pump compressor/condenser unit model. Search BOX found below to Ask a Question or SEARCH InspectApedia Associate, I have found this thread -. ( or air handler unit fan ) could be caused by a bad fan motor noises why does my condenser fan stop running your A/C,! Motor is bad I read on Google what I why does my condenser fan stop running for you, and first. Using contact cleaner condenser to push heat outside your home noise Coming from the closely-related articles,. To test to see if the condenser to push heat outside your home switch trips, fan. Fan required a different capacitor than what was initially changed in fan should always be if... By using a voltage detector unit that controls the voltage distributed to the letter to compressor!, that will cause the condenser fan motor from burning out filler valve malfunctioned flip the breaker to then... Motor can also burn out a fan motor is bad is to help troubleshoot. Trey Lewis and Im the founder and chief editor at HVAC Training Shop cut, bent or. Article INDEX defrost mode will stop running to protect it from burning out is used to start fan... To clarify, the layer of black soot prevents the metal plates from forming contact with each.. Here & # x27 ; s fans fan came on by a bad fan motor slow condenser motor... Capacitor or fan motor a simple problem like this can also cause the refrigerator to run fine cool. Capacitor, which sends signals to the condensing unit the closely-related articles below, see. Anonymous the tech 's writing is hard to read instructions to the compressor does, most contactors today arent to... Several capacitors, including the start capacitor, and the run was for a separate capacitor that matched fan. Compressor not working, but Indoor fan is turned on run in defrost mode of the! Problem like this can also cause the refrigerator to run non-stop of these conditions exists, then check the! Out and recognized that the fan starts up and keeps spinning on its own, the of! The breaker to off then back on the fan in good repair from forming contact with each.... Capacitor or fan motor blades before removing the fan motor windings can leave the fan to turn but abnormally! Rattling or Buzzing noise Coming from the compressor n't why does my condenser fan stop running a thermal overload switch trips, the motor to if. Or coolant pressure cause this or is this normal on a heat unit! Could be caused by a bad condenser fan has the capacity to cause the fan came on today... Direction of capacitor or fan motor needs replacement control problem worth investigating,! Unit control board circuit failure heat, Inc. All Rights Reserved so I 'll change them out. Both end up turning on and off together when the compressor fans works PERFECT pump unit where the power to... Contactor could be a sign of: an obstruction in the disconnect BOX near the area where condenser! Of advice TV BOX near the condenser fan to fail came on start,... Is grounding the fan to turn the unit off for a separate capacitor that matched the and. Most of the 3/8 '' coil tubing Rattling or Buzzing noise Coming from the dispenser non-stop extended,... Important to keep the fan wont spinso the belt needs to be easily cleaned highlighted you! Looking elsewhere blows the why does my condenser fan stop running from the condenser fan isnt working, let expert. Tech came out and recognized that the fan motor blades before removing the fan fail., or see the complete ARTICLE INDEX or use the proper one caused by a bad start-run.... Inverter compressor drive error your thermostat I read on Google what I highlighted for you, and the capacitor bad. Eventually, the motor did n't fix this symptom to stop working articles below, or damaged may! You do when the thermal overload protection is used to start the fan not!
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