If the AC unit fan is not spinning, the first thing to check is the circuit breaker. It may be the AC condensers compressor or fan. A burnt-out motor is yet another reason a condenser fan would stop working. Faulty circuit board. If you have an ac compressor that is not working but your air handler fan is running properly, look out for the following things: 1. If your circuit breaker trips again, then there is something wrong with your condenser unit. Remove the screws holding the circuit board in place. Here's how to do it: Turn your refrigerator off at the wall or unplug it. Faulty electrical signals. The fan stops on the condenser. On our outdoor heat pump unit, when set to heating compressor and compressor fans works PERFECT! Conducting an ohm test on your condenser fan motors windings will let you know for certain whether your fan motor is broken. Over an extended period, that will cause the fan to stop working. Put the cage and panel back on the condenser and make sure everything is tight and back where it came from. If your fan belt breaks, then the condenser fan wont spinso the belt needs to be replaced. To remedy an A/C fan obstruction, all you have to do is lift the outdoor unit cover and wipe the fans clean. The outside condenser of a central air conditioning unit can be very loud. Now the compressor comes on (freon line gets cold) however; the condenser fan is not running but humming. Remove the screws holding the blower motor assembly in place and carefully slide it out of the cabinet. 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. Coincidentally, a bad fan start capacitor will also cause a circuit breaker to trip. When the compressor cycles on, it also feeds a line to the condenser fan relay, running the fan. 12 - Sub Zero Refrigerator Condenser Fan Motor. hello, new to here, new to heating and cooling. If the condenser fan doesn't when the compressor is on, then is due to one of the following reasons: Condenser fan capacitor is bad. 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 . Air Conditioner Making a Humming Noise. And the AC compressor stops prematurely. Cleaning the air filters regularly will prevent this issue in the future. 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. The condenser fan cools refrigerant from a hot, gaseous state, to a liquid. Not much different pitch before and after it's energized. DeniseThere is probably something here that we don't understand. This Q&A were posted originally at FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs. Fan is brand new. The disconnect is the switch on the side of your home next to the condensing unit. Thanks for the great step by step instructions to troubleshooting. 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. A contactor is a moving part that pulls in when it switches on. I have not got that error since. You may need a new fan assembly or a few bolts tightened. Sometimes it will stay on longer than other times. - 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. . 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. In order for both the compressor and the air handler to turn on, I have to flip the thermostat to "fan on" which turns on the air handler then to "cool" which turns on the outside compressor. Mechanical Issues. Clogged air filter. Typically, there's an on-off . AC unit (old) has been running fine until couple days ago. The system won't cool your unless both sides of the system are working. Freedom Air and Heat, Inc. Fan is still intact. The Unit Is Too Small or Has an Old Thermostat. Capacitors store up the energy that powers the air conditioner's fans. 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. If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. Thermostat Issues. Banging. Buzzing can also mean that your condenser fan is not working. The next thing that you should do is check for power at the condenser unit. You have a bad condensor fan. 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. It is important to keep the fan in good repair. Frozen evaporator coil. If it is an air conditioner check for an air conditioner breaker trip. The unit is 8 years old. Ordered a new one off Amazon with the same CAP rating. 5. I replaced the motor and the capacitor and neither fixed the problem. We have no relationship with advertisers, products, or services discussed at this website. The fan does not stay off for a "long" time. The label reads, "THERMAL SWITCH" which is inside the motor and will shut the motor down if it overheats. 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. Had to turn the unit off for about an hour. This field is for validation purposes and should be left unchanged. 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. Thermal overload protection is used to prevent your motor from burning out. Anything else make it shut down like that? One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. The air flow is driven by a large fan (the "blower") inside the home. Power source switched off or unplugged. The condenser cooling fan comes as a complete unit, including the motor, housing and blades. Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. 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). Dirt, dust, and debris can accumulate on the condenser coil , limiting the coil's ability to release heat from the refrigerant. The contactor coil is the part of the contactor that switches on and off. Any help would be great! The wiring diagram just above may not apply. The condenser fan motor is located underneath the refrigerator near the back. An easier way of checking your capacitor is to use a voltmeter. 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. Turn off electrical power to the indoor unit. On occasion a "slow" outdoor fan may be due to a fan blade that is not secured to the fan motor shaft. Anyway, into the bag of tricks, although I always test them anyway. That's because an overcharge can send liquid refrigerant into the compressor - causing its destruction. If youre comfortable working around electricity, then check out the video below from Word of Advice TV. If it is leaking, you will know by a pool of . Shut off your AC and check the fan capacitor, contactor, and motor if the condenser fan isn't running when the compressor is on. Got up this morning and it was off, but the unit was still running. When an outside fan fails, the most likely cause is a capacitor issue. I had a HVAC Repair company come out over 5 times trying to fix it. Make sure the freezer door seals shut. Any suggestions? DISCLOSURE: We may earn a commission when you use one of our coupons/links to make a purchase. Think this could be the fan motor itself? I could hear the lines charging and again, no leaks. I am not convinced the fan was fixed either the first or second visit. Fan spun fine for a few minutes, the crapped out. I ohmed the 3 motor windings and they add up correctly. That could also mean that its bad. AC Noise Photo 1: Open the unit. Sign up for a new account in our community. Defrost or break down any ice buildup. There is one other test that you can do to confirm whether your ACs condenser fan motor is bad. Not grinding or hard to turn, but maybe not 100 percent? 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. Thought that AC wasn't cooling 100%, and low and behold went outside and condenser fan was not turning and fan was hot as well as entire unit. We can probably make this work, but I'm nervous about just guessing and burning up another fan motor. Some units also have dual capacitors that power you air conditioner's fans, as well as your compressor. Why does that happen? Homeowners often report a heat pump fan not spinning. The coil was not penetrated & maintains pressure. If the belt of your HVAC unit has broken, it means your system is old, and likely overdue for a replacement. The fan stops on the condenser. If so, call in a professional to repair it. Naturally, this will cause the condenser fan to fail. Now if the condenser fan runs in "heat" you may have a problem with the fan relay or the main controller. Jim, thanks so much for the very nice feedback - that's just super. On 2020-06-09 - by (mod) - York YCJF42541S1A outside unit was running but the fan blades weren't. Here are five reasons that your AC might stop working this summer, and what you can do to keep it going. When one side of the system isn't working, try the following: Make sure the AC hasn't been turned off. Broken or stuck condenser fan. Why does my condenser keep running? Compressor Activation: Some condenser fans activate with the air conditioning compressor. This indicator light is connected to the units control board. Or see FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs for diagnostic questions that can help get the condenser fan working. Could be a bad start-run capacitor or a bad control board. Today it is at 0-40. The condenser fan should always be running if the compressor is on. 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. More likely there is an electrical or control problem. I say that because mine is 30 UF +0.3 cap and I bought a 50+ UF cap at 470 volts. This keeps them both running together. It turns fairly easily, but seemed to come to a stop abruptly. This fan can also have its mounts loosen due to general wear and tear, resulting in it hitting other parts and causing slamming noises. Is it damaged? You'll know this is the problem if your inside fan runs and you hear the buzzing noise coming from the outside unit. 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 Just sharing this info for others. " Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. Each air conditioning system has several capacitors, including the start capacitor, which sends signals to the motor, and the run . On the motor tag is says, "Thermally Protected" which means it has an internal auto re-settable thermal fuse which opens if the motor windings get too hot. Also possibly there may be no power to the fan and fan blades are moving due to local breeze blowing through the unit. 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 best solution to this issue is to install a newer, more energy efficient HVAC unit. When the thermal overload switch trips, the fan motor will stop running to protect it from burning out. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? 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. 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. I will contact pioneer. 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. it depends. 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. My old fan was a 4 wire system and has a red,yellow, brown, and black wire. If your unit has shut off, check your circuit breaker. A burnt-out motor is yet another reason a condenser fan would stop working. Fan contactor isn't working. 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. 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. No cooling, no heating. Listen and Look for a Faulty Defrost Timer. Thats a surefire way of knowing that a capacitor is bad. If the compressor and condenser fan motor are not running then you likely have a power problem. Your motor is bad. Check the air filter to see if it needs to be replaced. 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. The fan will NOT start on it's own but you can see it "tries" to move in the right direction. Alternatively, you can call your local HVAC repair services company to come and take a look. 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. Clean the dirty condenser coils. Step Ten: Putting it Back Together. I got a p4 error once which the troubleshoot guide says is: inverter compressor drive error. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". Replace or reset a faulty thermostat. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? Engine running hot. Then, later look at what can prevent your ac compressor from running when your outdoor fan is running without problems. I am semi handy-don't have an ohm meter (couldn't read it if I did) however some of these comments about the electrical are scary. I notice the red on the unit is coming off of a small circuit board that says low. Read further to diagnose the issue. InspectAPedia tolerates no conflicts of interest. I've bought nothing but Amrad caps for 3 years now. I had a problem with my Condenser unit. Filter,and coils clean; ventsare open. AFTER the motor craps out you have to wait a little while and you can get it to turn again. The condenser fan has not stopped. It starts by it self, and cools. If either of these conditions exists, then the fan motor is bad. 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? Burnt Out Motor. Remove the fan motor blades before removing the fan motor from the grill. Periodically making sure that there's no debris or dust in or around the fan motor is also a . So how do you know if your condensing units fan capacitor is bad? Follow these steps to check: Turn off the power to the condensing unit at the circuit breaker and disconnect. A bad fan motor can also cause the fan to turn but only abnormally slowly. When this belt becomes loose or breaks, the compressor fan will no longer work. The service panel may have some labels or stickers on it. (May 20, 2015) Aubrey said:Correct.
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