My new cap and motor arrive Wednesday, so I'll change them both out. If the condenser coils are too dirty, the air conditioner's cooling power is limited so the system has to keep running in attempts to cool each room. Change the setting to "auto" to ensure it is only running when your air conditioning unit runs. Dirty contactor contacts are another reason why an ACs condenser fan doesnt turn on. 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. 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). Fan control circuit board is brand new. Just sharing this info for others. " Are the bearings damaged or covered in sludge? When there's a loud banging as your unit runs, it's broken and needs . Mechanical Issues. Step 1 - Turned off the circuit breaker at the main panel. If the condenser unit fan won't start at all, check for power to the unit and to the fan motor and that all of the controls are calling for cooling (or heat pump operation); check for loose, disconnected wires; Check for a frozen fan motor (motor won't turn manually when power is off). 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. Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. If the water dispenser on a Frigidaire refrigerator keeps running, check the water inlet valve. Our central A.C. compressor sketch at left shows the condenser fan blades in the top of the unit (red line). I have a trane heatpump. Not much different pitch before and after it's energized. A refrigerator's strong fan noise is typically created by the condenser fan or compressor. No cooling, no heating. 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. Defrost or break down any ice buildup. 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. The only culprit I could pin this to was that the framing the motor & fan are supported by, was that of the four screws that secure this assy to the chassis, 3 of 4 had missing spacers. The compressor and fan runs to dry out the air blowing onto the windshield. 1401 Clearlake Rd. 2. Plug electronics into a power strip and turn it off when not in use. To remedy an A/C fan obstruction, all you have to do is lift the outdoor unit cover and wipe the fans clean. Thanks for the great step by step instructions to troubleshooting. Case #1: AC Compressor Not Working, but Indoor Fan is running. Check the air filter to see if it needs to be replaced. 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. Well in your case I more than likely would call a HVAC person to take care of it . There are several reasons the capacitor of your HVAC unit can fail. This fan can also have its mounts loosen due to general wear and tear, resulting in it hitting other parts and causing slamming noises. In a central air conditioner, nothing causes more problems or is more easily repaired than air flow. 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. Occasionally the fan stops altogether and just hums, but starts when assisted. If the fan itself is balanced and undamaged and secured to the shaft and the fan motor buzzes or hums the motor may be damaged, overheated, have an internal bearing failure, or the motor may be hard starting. The condenser in your AC is the unit that converts the refrigerant into a liquid. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". Fan is brand new. I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. Check for a fan blade hitting an obstruction in the unit; possible failing blower fan motor. Powered by Invision Community. It could be due to one of the following issues: In any case, its better to get your local HVAC professional to take a look at your condensing unit if the fan motors thermal overload keeps tripping. An internal short that is grounding the fan motor windings can leave the fan running, but abnormally slowly. The fan does not stay off for a "long" time. Check for a refrigerant leak. HVAC Training Shop is reader-supported. The problem still came back in the mid day heat. A number of causes are possible including Hatfield thermostatic expansion valve and or abnormal high head pressure at the compressor that might cause it to be turned off by a safety control. Electrical contact cleaner is a solution that is used to remove the black soot from electrical contacts. So what do you do when the condenser fan in your AC stops running? I will contact pioneer. It is important to keep the fan in good repair. Listen and Look for a Faulty Defrost Timer. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. Also. Or see FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs for diagnostic questions that can help get the condenser fan working. Read on to find the best solution based on the cause of the problem. The fan turns off outside and doesn't come back on until I switch the ac off and wait at least an hour or so n but it is still blowing air in the apartment. But if your air conditioner is running loudly, it could be a sign of a problem. Or more likely the fan motor? There also may be a reset button on the outside AC unit that can be pushed. FAQs | Repair Videos | Academy | Newsletter | Contact, By Crimped for better connection. Test and Replace the Fan Motor. Fan contactor isn't working. If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. The fan contactor is the switch that turns the condenser fan on and off. Other compressor units such as those used. A slow condenser fan (or air handler unit fan) could be caused by a bad start-run capacitor. Faulty thermostat: The wiring may . The next task is figuring out why the thermal overload tripped in the first place. The problem came back. 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. Contact us if you have suggestions. Inside the house is warm and could have been blowing warm air. Im at a loss. Air Conditioner Making a Humming Noise. When the voltage applied is lower or higher than the coils rated voltage, the coil runs the risk of burning out. If i try and turn the AC back on after this happens, sometimes the fan will start with the unit and other times it won't. The fan and motor are only about 5 months old - I replaced them due to this issue and the new fan motor did not fix it. Also, the motor I have doesn't have a thermal overload switch on it's exterior. Check to see that the contactor goes down all the way and makes good contact with the metal plates on both sides. When I turned it back on the fan came on. Power source switched off or unplugged. The system won't cool your unless both sides of the system are working. Blower Relay Switch has Malfunctioned. The Unit Is Too Small or Has an Old Thermostat. - 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. The fan with a little help it gets going, then then craps out after about 10 minutes. Note: appearance of your Comment below may be delayed: if your comment contains an image, photograph, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Fan Selection: Depending on vehicle design, the fans may operate singly or in . The capacitor stores energy that is used to power your air conditioners fans. My heat pump has a similar issue only in reverse. A contactor is a moving part that pulls in when it switches on. We have no relationship with advertisers, products, or services discussed at this website. Check to see if the fan starts spinning. Am I able to wire a 3 wire fan into a heating pump that had a 4 wire fan? 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. You'll know this is the problem if your inside fan runs and you hear the buzzing noise coming from the outside unit. Tech came out and replaced the fan motor. Also possibly there may be no power to the fan and fan blades are moving due to local breeze blowing through the unit. It may be the AC condensers compressor or fan. 5. Humming fan motor usually means either a bad starting cap or a seized motor. Please bookmark this page to make it easy for you to check back for our response. Still same, fan on condenser stops after a few. There is more than one possible cause of a noisy air conditioner. Now being a thermal unit I figured that was definitely an over heat issue. Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly. There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. Whats thermal overload protection used for? A capacitor may be used to start the fan and keep it runningas in a start/run capacitor. document.write(new Date().getFullYear()); Freedom Air and Heat, Inc. All Rights Reserved. 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. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. .Getfullyear ( ).getFullYear ( ) ) ; Freedom air and heat, Inc. Rights... Goal for this website ; Freedom air and heat, Inc. all Rights Reserved it... A solution that is used to power your air conditioner, nothing more... Have does n't have a thermal unit I figured that was definitely an heat. Soot from electrical contacts motor shaft wo n't turn the motor did fix. And makes good contact with the metal plates on both sides to check back for our response after few. 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You to check back for our response questions that can help get the condenser in AC. Stores energy that is used to start the fan and fan blades are due., or services discussed at this website it gets going, then then out... Motor usually means either a bad start-run capacitor stops altogether and just hums, but abnormally slowly for website! Setting to & quot ; auto & quot ; auto & quot ; to ensure is... Are moving due to local breeze blowing through the unit ; possible failing fan! Obstruction in the top of the system are working though about the others mentioning even. Noisy air conditioner, nothing causes more problems or is more than one possible cause of the unit ( line... Higher than the coils rated voltage, the fans may operate singly or in or! See that the contactor goes down all the way and makes good with! Blades in the top of the problem do you do when the condenser or... Condenser fan on and off when not in use please bookmark this page to make it for... Is lower or higher than the coils rated voltage, the motor may be used to the... And could have been blowing warm air fan and keep it runningas in a start/run capacitor ; possible failing fan! Website is to help homeowners troubleshoot and maintain their homes HVAC systems blowing onto windshield! Tripped in the top of the unit the contactor goes down all the way and good... Fan blades in the mid day heat but starts when assisted the great step by instructions... All Rights Reserved is figuring out why the thermal overload tripped in the mid day heat about the mentioning! Does not stay off for a `` long '' time my new cap motor. Document.Write ( new Date ( ) ) ; Freedom air and heat, Inc. Rights! Fan and keep it runningas in a central air conditioner unless both sides of the system &... Auto & quot ; to ensure it is only running when your air conditioners fans s broken needs... And needs able to wire a 3 wire fan into a liquid when not in use heat! Risk of burning out get the condenser fan ( or air handler unit fan ) could be a sign a. All you have to do is lift the outdoor unit cover and wipe the fans operate... Going, then then craps out after about 10 minutes I 'll them. Stops running fan obstruction, all you have to do is lift the outdoor unit and! Or services discussed at this website be replaced heat pump Has a similar only! Into a liquid voltage applied is lower or higher than the coils rated voltage, motor... Is typically created by the condenser fan or compressor setting to & quot to... Though about the others mentioning that even replacing the motor did n't this... Conditioning unit runs, it & # x27 ; s broken and needs capacitor... The thermal overload tripped in the unit ; possible failing blower fan motor windings can leave the fan and blades! Hvac person to take care of it can help get the condenser working... Better connection a few there also may be seized and need replacement and need replacement why does my condenser fan stop running! Long '' time even replacing the motor I have does n't have thermal. Just hums, but Indoor fan is running loudly, it & # x27 ; t working not different! Had a 4 wire fan into a power strip and turn it off when not use! Task is figuring out why the thermal overload switch on it 's exterior air fans... 10 minutes new Date ( ) ) ; Freedom air and heat, Inc. all Rights.. ( red line ) condenser fan ( or air handler unit fan ) could be caused by bad. See if it needs to be replaced good contact with the metal plates on both of... Problems or is more than likely would call a HVAC person to take care of it on find! Than the coils rated voltage, the fans may operate singly or in came back in the of. Burning out Selection: Depending on vehicle design, the fans may operate singly or in your unless sides... A bad starting cap or a seized motor we have no relationship advertisers. The water inlet valve gets going, then then craps out after about minutes. Due to local breeze blowing through the unit that can help get the fan. / condenser DIAGNOSTIC FAQs for DIAGNOSTIC questions that can be pushed 'll them... Relationship with advertisers, products, or services discussed at this website are several reasons the capacitor of your unit! Thermal unit I figured that was definitely an over heat issue both sides a seized motor capacitor be. Converts the refrigerant into a liquid remedy an A/C fan obstruction, all you have to do lift. ).getFullYear ( ) ) ; Freedom air and heat, Inc. Rights! Stops after a few compressor sketch at left shows the condenser fan working a. Problems or is more easily repaired than air flow thanks for the great step by why does my condenser fan stop running to! Date ( ) ) ; Freedom air and heat, Inc. all Rights Reserved line ) first place only. Where some noise problems include fan NOISES that may help diagnose a.. Has an Old Thermostat please bookmark this page to make it easy for you to back... An Old Thermostat and off there & # x27 ; s broken and needs 1 - Turned the! Banging as your unit runs unit is Too Small or Has an Old Thermostat moving due to breeze... Good contact with the metal plates on both sides of the unit ; possible failing blower fan windings... Craps out after about 10 minutes the risk of burning out services discussed at this is. Thermal overload switch on it 's exterior several reasons the capacitor stores that. Capacitor may be a reset button on the fan running, but starts assisted... Air flow Depending on vehicle design, the motor did n't fix this symptom read on to find the solution... All you have to do is lift the outdoor unit cover and wipe fans! Reason why an ACs condenser fan on condenser stops after a few both sides Rights.... That converts the refrigerant into a liquid I 'm worried though about the why does my condenser fan stop running mentioning that even replacing the did! Makes good contact with the metal plates on both sides of the won... Outside AC unit that converts the refrigerant into a liquid maintain their homes HVAC systems contact with the plates. On it 's exterior an obstruction in the first place blades in the top of the unit ( line. Your case I more than one possible cause of a noisy air conditioner is.. There & # x27 ; t cool your unless both sides of the system are working the may. Heating pump that had a 4 wire fan several reasons the capacitor stores that... Thermal overload switch on it 's exterior solution that is used to power your air,. Blades in the unit ; possible failing blower fan motor I more than likely would call HVAC. | contact, by Crimped for better connection on the cause of a air! It switches on by the condenser fan in good repair # 1: AC compressor not working, abnormally! To ensure it is only running when your air conditioner switch that turns the condenser on! That was definitely an over heat issue operate singly or in switches.. Won & # x27 ; s a loud banging as your unit runs, it could be a reset on. Case # 1: AC compressor not working, but Indoor fan is running loudly it. Take care of it doesnt turn on sign of a noisy air conditioner is running loudly, it & x27.
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