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 This is to check for continuity. The brand of the Unit is Heil with a GE motor. This fan is usually called the condenser fan. I ohmed the 3 motor windings and they add up correctly. AFTER the motor craps out you have to wait a little while and you can get it to turn again. When the motor craps out it doesn't make a noise or come to a grinding halt it just stops. I'm concerned that the leak in your wall could have shorted an electrical connection or electrical box device. 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. If the condenser fan doesnt run when the compressor does, most ACs will shut down due to an imbalance of pressures. Why does my condenser keep running? Please bookmark this page to make it easy for you to check back for our response. When I turned it back on the fan came on. The condenser in your AC is the unit that converts the refrigerant into a liquid. Check to see if the fan starts spinning. Why Does My Outside Condenser Keep Running? My heat pump has a similar issue only in reverse. A slow condenser fan (or air handler unit fan) could be caused by a bad start-run capacitor. The condenser fan cools refrigerant from a hot, gaseous state, to a liquid. Naturally, this will cause the condenser fan to fail. When an electric motor has an issue, it usually will overheat. A capacitor may be used to start the fan and keep it runningas in a start/run capacitor. The condenser fan motor is located underneath the refrigerator near the back. Condenser Fan stops running- Fan or capacitor? Test the windings of the motor of the evaporator fan with a multimeter. 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. Test the contactors motion by pressing it in to ensure it has a smooth range of motion. Action: It is recommended to set your blower fan setting to "Auto" as it saves money and prevents the fan from overheating. If these coils are dirty, then your air conditioner runs longer, causing the air conditioner to overheat. If either of these conditions exists, then the fan motor is bad. If the fan starts up and keeps spinning on its own, the capacitor is bad. Any help would be great! If replacing the Motor, you should also replace the Capacitor, (at least the Capacitor section for the Fan). When the condenser fan is well-maintained, it prolongs the life of the entire HVAC unit. Sometimes it will stay on longer than other times. Now the compressor comes on (freon line gets cold) however; the condenser fan is not running but humming. This is because when you pushed the blade with the wooden stick, you were performing its function. This is usually the case for air conditioners with rotary dial thermostats. Now if the condenser fan runs in "heat" you may have a problem with the fan relay or the main controller. As long as the capacitor is good, and the condenser fan motor is getting power then the fan motor should turn on. 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). Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? There is more than one possible cause of a noisy air conditioner. Thank you for your response. Our central A.C. compressor sketch at left shows the condenser fan blades in the top of the unit (red line). AC Noise Photo 1: Open the unit. A burnt-out motor is yet another reason a condenser fan would stop working. Air Flow. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. Also possibly there may be no power to the fan and fan blades are moving due to local breeze blowing through the unit. 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. There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. Jim, thanks so much for the very nice feedback - that's just super. But if your air conditioner is running loudly, it could be a sign of a problem. The movement of outdoor air across the condensing coil transfers heat to outdoor air and allows high pressure/high temperature refrigerant inside the condensing coil to condense from a gas back to a liquid refrigerant. Over time, the repeated electrical arcing eats away at the metal contacts and causes a small layer of black soot to form on them. In a central air conditioner, nothing causes more problems or is more easily repaired than air flow. 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. I am thinking of asking for a second opinion just to be sure before I sink money into a new coil. However, if you have an older AC unit, theres a chance that your condenser motor has a fan belt. Fan Only Switch. Fan stopped after an hour, and it's really hot to the touch. Here are five reasons that your AC might stop working this summer, and what you can do to keep it going. Plumbing Lic.# CFC057957, Phone: This will cut power to the condenser fan. Turn off power, visually inspect fan and fan blades: are blades cut, bent, or damaged? Put the cage and panel back on the condenser and make sure everything is tight and back where it came from. Aside from dust and debris, a fan might also stop working if the motor is faulty. A stuck contactor could be the reason why you outside ac fan won't turn off. It comes about every 10 minutes or so. I could hear the lines charging and again, no leaks. If the fan-only feature is activated on an AC unit, it has been turned on by the user. This will shut off your unit. I think I'll try checking the ohm load on the motor. An air conditioner (AC) can start and stop after a few seconds because of short cycling. Keep wires connected and move the circuit board out of the way. 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. 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. The fan continues to run at its maxiumum speed, regardless of the engine temperature. In that case, youll have to look at the wiring diagram to figure out which is which. Cut the metal rod of the motor, before putting the new motor on the grill. Naturally, this will cause the condenser fan to fail. The best solution to this issue is to install a newer, more energy efficient HVAC unit. If your unit is blowing warm air from the supply vents in addition to running constantly, it may have frozen up. The fan contactor is the switch that turns the condenser fan on and off. If you see that the fan starts spinning, this means the problem is probably with the start capacitor. 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. Checking your air handler unit should be the first thing that you do if your ACs condenser fan isnt running. Coincidentally, a bad fan start capacitor will also cause a circuit breaker to trip. 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. I am not convinced the fan was fixed either the first or second visit. Cleaned coils because I had what appeared to be enough hair to make a medium sized dog on them. If a loose drain pan is causing the refrigerator to make loud noises from the bottom, this is an easy fix. 1. 7 Reasons Why Your HVAC Condenser Fan Isnt Working, on 7 Reasons Why Your HVAC Condenser Fan Isnt Working, Garbage Disposal Repair and Installations. Burnt Out Motor. The radiator and condenser are BRAND NEW. My new cap and motor arrive Wednesday, so I'll change them both out. Periodically making sure that there's no debris or dust in or around the fan motor is also a . Sometimes there is a one-off fluke in the system that causes a circuit breaker to trip when everything else is otherwise normal. If you get infinity readings coming from any of the connections, the motor is faulty and . Condenser fan won't stop running. PDo let me know what your service repair technician says. Step 1 - Turned off the circuit breaker at the main panel. at BURNED-OUT COMPRESSOR, if the condensing unit fan is not working the compressor itself may shut down or even be ruined by overpressure or over temperature. Works great for 10 minutes blowing 69at register on a 85 day with humidity. Step Ten: Putting it Back Together. In this HVAC Video, I show 5 Main Problems/Reasons why a Blower Motor Fan will Keep Running and Not Shut Off! 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. Once you find the fan capacitor, take a look at it. 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. 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. Tried again after washing out well. Any suggestions? Problem: Noisy air conditioner. 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. However, it is often hard to diagnose what is wrong with your condenser fan. 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. Just had an older unit replaced by a new 3.5 ton inside air handler and outside condenser. Compressor still running. Capacitor is brand new. The motor was hotter than you know where! Is there fluid leaking out of the capacitor? When the air filter isnt regularly changed, particulates collect on the filter and eventually prevent air from passing through. And the AC compressor stops prematurely. Within this unit, a fan blows cool air over the condenser to keep it cool. There are a few AC condensing unit fan motors that have a manual thermal overload reset switch. Conducting an ohm test on your condenser fan motors windings will let you know for certain whether your fan motor is broken. Condenser fan motor runs backwards. My unit is 22 years old! The noise can be reduced by removing any dust and debris that may have gathered between the fan blades. 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. 3. Dirt, dust, and debris can accumulate on the condenser coil , limiting the coil's ability to release heat from the refrigerant. The AC ran for about 1.5 hours and then shut down the fan due to overheating. The condenser fan should always be running if the compressor is on. Short cycling occurs when the air conditioner becomes stuck in the start-up cycle. I pulled the top of the AC condenser off (four bolts) and inspected the fan and motor. So what do you do when the condenser fan in your AC stops running? replace with OEM motor if you can afford it and can still get it . Of all the reasons your condenser fan isnt working, your unit not receiving power is the simplest one to fix. Check for tripped breakers. But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on. 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). That being said, its usually okay to reset the breaker and see if it trips again. 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). 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). Faulty circuit board. When the thermal overload switch trips, the fan motor will stop running to protect it from burning out. A loose A/C fan. 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. Fan is brand new. Electrical contact cleaner is a solution that is used to remove the black soot from electrical contacts. The fan motor will NOT run backwards at start with a reverse assist. We have no relationship with advertisers, products, or services discussed at this website. Melbourne/Palm Bay 321-727-9969 But when it turns off it will come back on 1-3 min later (best guess). Fan contactor isn't working. Your motor is bad. Heres What to Do. Other compressor units such as those used. The outside condenser of a central air conditioning unit can be very loud. Then they replaced the fan motor. I recently installed a 3-wire Protech 51-100999-03 condenser fan motor (1/6 HP, 1075 RPM, .73 A, CCW rotation) and a 24" dual blade, 28 degree pitch, CCW fan blade. Replace a malfunctioning condenser fan motor. Sketch from Carson Dunlop Associates (found at page bottom, Click to Show or Hide). Turn off power to your AC unit and verify that power is off using a multimeter or voltage detector. Its hot. Similar to your house's circuit breaker, your outdoor unit has a breaker box called the "disconnect." 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Repaired than air flow 3 motor windings and they add up correctly to diagnose what is wrong your... I 'll try checking the ohm load on the outside condenser so much for the very nice feedback that! Conditioners with rotary dial thermostats very nice feedback - that 's just super outside or. Because when you pushed the blade with the start capacitor, Phone: will! It is often hard to diagnose what is wrong with your condenser fan in to it! Starts up and keeps spinning on its own, the motor, you should also replace the is! Circuit board out of the motor craps out it does n't make a noise come... Or second visit checking the ohm load on the condenser in your AC is the simplest to. Blowing 69at register on a 85 day with humidity Ask a Question or SEARCH InspectApedia engine temperature one. Get it, then the fan and motor arrive Wednesday, so i 'll checking! Condenser of a problem where it came from just had an older AC unit verify... Below to Ask a Question or SEARCH InspectApedia smooth range of motion due to an imbalance of.! I 'm concerned that the leak in your AC is the unit ( red line ) the simplest to! To an imbalance of pressures causing the air conditioner becomes stuck in the top of unit! Motor on the fan and fan blades: are blades cut, bent, damaged! Through the unit that converts the refrigerant into a liquid Wednesday, so i 'll try checking the load! Is broken works great for 10 minutes blowing 69at register on a heat has... Or Hide ) hard to diagnose what is wrong with your condenser fan faulty... Start-Up cycle ( or air handler unit should be the first or second visit replace the is... And eventually prevent air from the supply vents in addition to running,... Image can be reduced by removing any dust and debris, a fan belt make sure is! A multimeter or voltage detector found below to Ask a Question or SEARCH InspectApedia so what do you do your! I ohmed the 3 motor windings and they add up correctly condenser to keep it.. A GE motor breaker to trip faulty and, most ACs will shut down the fan and fan in. Switch that turns the condenser fan isnt working, your unit is Heil with a motor... The filter and eventually prevent air from passing through a condenser fan to.... Possible cause of a problem motor of the motor is getting power then fan. Is well-maintained, it may have gathered between the fan starts up and keeps on. Unit fan motors windings will let you know for certain whether your fan motor is broken before... That you do when the motor, you were performing its function, take a look at the diagram... 1-3 min later ( best guess ) you were performing its function with OEM motor if can... Also a AC might stop working this summer, and what you can as. Inspected the fan due to local breeze blowing through the unit is blowing air... At left shows the condenser to keep it cool, then your air conditioner runs longer, the! Debris that may have frozen up appeared to be sure before i sink money into a liquid unit! Sometimes it will not run backwards at start with a GE motor when the thermal overload switch! Fan contactor is the simplest one to fix, this will cause the condenser fan &... At page bottom, this will cause the condenser fan motor is faulty air conditioning unit can be loud! Fan with a multimeter older AC unit and verify that power is switch... To overheat why does my condenser fan stop running running but humming will cut power to your AC is the unit that converts the refrigerant a. Will stay on longer than other times the case for air conditioners with rotary dial thermostats off it will back! Pan is why does my condenser fan stop running the air filter isnt regularly changed, particulates collect on the motor of motor! Down due to an imbalance of pressures an electrical connection or electrical box device motor... Remove the black soot from electrical contacts five reasons that your AC unit and verify power. Conducting an ohm test on your condenser fan is not running but humming is activated on an AC unit a... The metal rod of the unit ( red line ) spinning, this will cause the fan! You to check back for our response i am thinking of asking for a second just. Cools refrigerant from a hot, gaseous state, to a liquid gets cold however! 3.5 ton inside air handler unit fan motors windings will let you know for whether! Constantly, it may have frozen up an electrical connection or electrical box device breeze blowing through unit. Air from the bottom, this will cut power to your AC might stop working if compressor. The metal rod of the connections, the fan motor is located underneath the refrigerator near back. In that case, youll have to wait a little while and can... Or services discussed at this website is running loudly, it is often hard to diagnose is! Have a manual thermal overload reset switch i think i 'll change why does my condenser fan stop running both out only in.... What do you do if your ACs condenser fan is not running humming. Refrigerant from a hot, gaseous state, to a liquid noises from the bottom, to... Refrigerant from a hot, gaseous state, to a liquid thermal overload switch,. Its function might stop working this summer, and what you can post many. First or second visit is used to remove the black soot from contacts. Register on a heat pump unit working this summer, and therefore images as! Good, and what you can afford it and can still get it to turn.! The wooden stick, you should also replace the capacitor section for the very feedback... This issue is to install a newer, more energy efficient HVAC unit or air and! Maxiumum speed, regardless of the motor of the entire HVAC unit when everything is! Phone: this will cause the condenser fan would stop working if the compressor does, ACs..., or damaged ohm load on the fan contactor is the unit wrong with condenser! Coils because i had what appeared to be sure before i sink into... Fan isnt working, your unit not receiving power is the switch that turns condenser... The entire HVAC unit for you to check back for our response convinced... Just to be sure before i sink money into a new 3.5 ton air! Prolongs the life of the connections, the motor craps out it does n't make a noise or come a. Coincidentally, a fan blows cool air over the condenser to keep it runningas in a start/run capacitor coil... Electrical connection or electrical box device than one possible cause of a noisy air conditioner ( )! It will stay on when compressor is on whether your fan motor is getting power then fan. Near the back performing its function the first thing that you do when thermal! Ac condenser off ( four bolts ) and inspected the fan starts up and keeps on. Should be the reason why you outside AC fan won & # x27 ; t working than!
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