This process converts hot refrigerant . The next thing that you should do is check for power at the condenser unit. What else could be wrong with it? Typically this is caused by an internal short in the motor windings. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? Continue readingat CAPACITORS for HARD STARTING MOTORS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. The condenser fan motor draws air over the condenser coils to cool them. Filter,and coils clean; ventsare open. Next, press the thermal overload reset button. One of the most common reasons fans stop spinning is because of a dead capacitor. Turn off power to your AC unit and verify that power is off using a multimeter or voltage detector. Defrost or break down any ice buildup. I got everything hooked up and my buddy lent me his evacuator. So it seems to cool very slowly. Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. Today it is at 0-40. 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. Apologies for the delay. Above: a wiring diagram for a Heil Compressor/Condenser unit, courtesy of reader Jeff. The screws were still secure, but this could have initiated a small wobble. Same day I noticed the fan blades were not always running when the unit was running (unit was running but fan blades were not-they would come on some but not each time the unit kicked on). Air Conditioner Making a Humming Noise. Examples of A/C or heat pump fan/condenser unit problems discussed here include Condenser fan won't start or won't run; condenser fan won't start, or condenser fan keeps stopping; A/C or heat pump condenser fan won't stop running - keeps going forever; Noisy buzzing or wobbling ticking compressor fan unit diagnosis/repair; Air conditioner condenser compressor fan diagnosis & repair prodedures - things to check. (May 30, 2020) Jeff said:I have a heat pump unit where the condenser fan motor has burned up. The condenser fan motor is located underneath the refrigerator near the back. AC Noise Photo 1: Open the unit. My AC condenser originally had a fan problem. Many contactor contacts get dirty after a few years of use. For example, most contactors with coils rated at 24 VAC can receive between 18 and 30 VAC when voltage is applied. The next task is figuring out why the thermal overload tripped in the first place. After the service panel is removed, find the fan capacitor. All contactor coils have a tolerance for how many volts they can receive. There is more than one possible cause of a noisy air conditioner. Call us at 321-631-6886 (Brevard), 772-778-2272 (Indian River), or request service online. Over an extended period, that will cause the fan to stop working. 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). The disconnect is the switch on the side of your home next to the condensing unit. If so, call in a professional to repair it. You can check the fan setting on your thermostat. I'm worried though about the others mentioning that even replacing the motor didn't fix this symptom. 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. Dirty or faulty gaskets. Condenser coils are refrigerant-filled tubes running through your air conditioner's outside unit. One copper line cold and one warmer like normal. Dodge Master. This is speculative. Of all the reasons your condenser fan isnt working, your unit not receiving power is the simplest one to fix. A bent condenser fan causes stress on the blower fan motor shaft and can destroy the motor. Welcome to the forums. Same or similar situation. It turns fairly easily, but seemed to come to a stop abruptly. This sensor takes readings from the refrigerator (and freezer if you have one . The fan spins freely when no power is applied to it; when contacts kick in and power to fan it is "locked in one place" and no longer can be moved (using a small wooden dowel). If these coils are dirty, then your air conditioner runs longer, causing the air conditioner to overheat. This will shut off your unit. Fan in putside unit stops running in a halo hour. The fan temperature sensor is usually located on the engine block or radiator. 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 . Any thoughts or suggestions would be most appreciated. If youre comfortable working around electricity, then check out the video below from Word of Advice TV. An easier way of checking your capacitor is to use a voltmeter. Hi, my name is Trey Lewis and Im the founder and chief editor at HVAC Training Shop. Possible low voltage at the equipment; possible condenser unit control board circuit failure. Check for loose wires or loose components on the fan unit control circuit board. The fan contactor is the switch that turns the condenser fan on and off. The condenser unit fanis a blower that moves outdoor air across the condensing coil found in the outdoor compressor/condenser unit. Let's assume that the technician is honest but perhaps not a good communicator. The service panel may have some labels or stickers on it. Checking Motor Windings. I say that because mine is 30 UF +0.3 cap and I bought a 50+ UF cap at 470 volts. Condenser Fan stops running- Fan or capacitor? If the compressor and condenser fan motor are not running then you likely have a power problem. 5. The fan with a little help it gets going, then then craps out after about 10 minutes. If your outside condenser keeps running, this could be a sign of any of the following issues: No cooling, no heating. Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. Bad fan bearings can also result in a noisy fan, as the shaft and blades wobble. Why does my condenser fan stop running? When this belt becomes loose or breaks, the compressor fan will no longer work. Our Comment Box is provided by Countable Web Productions countable.ca, Click to Show or Hide Citations & References, HOW a FAN / CONDENSER UNIT WORKS to MOVE HEAT, DIAGNOSE & REPAIR COMPRESSOR CONDENSER FAN PROBLEMS, FAN REPLACEMENT WIRING, COMPRESSOR/CONDENSER, SPLIT SYSTEM AIR CONDITIONERS & HEAT PUMPS, CONDENSER FAN RUNS INTERMITTENTLY or SHORT CYCLES, COMPRESSOR / CONDENSER INSPECTION CHECKLIST, FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs, PIONEER MINI SPLIT SERIES INSTALLATION MANUAL, PIONEER MINI SPLIT SERIES SERVICE & REPAIR MANUAL, COMPRESSOR / CONDENSER INSTALLATION ERRORS, COMPRESSOR / CONDENSER LEVELING REQUIREMENTS, ARTICLE INDEX to AIR CONDITIONING & HEAT PUMPS, HOME INSPECTION EDUCATION COURSES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES, Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the. It had gotten down to 62 degrees. 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). Within this unit, a fan blows cool air over the condenser to keep it cool. Blower Relay Switch has Malfunctioned. Nothing. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. When the capacitor fails, the condenser fan will no longer rotate. Turn the air conditioner completely off, and call in a professional right away to diagnose the cause and prevent further damage to the system. So, I read on Google what I highlighted for you, and ordered a 30+ UF cap. Problems With Power Fan stopped after an hour, and it's really hot to the touch. Typically, there's an on-off . Sorry Jedson but I don't understand the question. The fan is still cutting off and not cutting back on. Guest horn4life Test the contactors motion by pressing it in to ensure it has a smooth range of motion. 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. I guess that was what I was asking, can you go from fan not working properly to coil leak? But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on. Fan Selection: Depending on vehicle design, the fans may operate singly or in . The outside unit doesn't turn-off when the thermostat turns-off the inside unit. 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. Clean the dirty condenser coils. Change Your Fan Setting To Auto: Check to see if your fan is set to the "on" option. Thank you for your response. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. 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. Fan control circuit board is brand new. The air flow is driven by a large fan (the "blower") inside the home. Our goal is to help homeowners understand how to troubleshoot and maintain their home's HVAC systems. Or see FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs for diagnostic questions that can help get the condenser fan working. The guages were around 270 (according to my buddy as he read the numbers to me) or so while trying to cool. Could there be any other reason the fan would just stop, or put another way, could a good motor overheat because of some other reason (I figure the fan is stopping because the motor is over-heating right?). If the water dispenser on a Frigidaire refrigerator keeps running, check the water inlet valve. Well in your case I more than likely would call a HVAC person to take care of it . Engine running hot. I adjusted up the temperature setting from 0-37 to 0-40 yesterday. 7. Problem: Noisy air conditioner. Fan spun fine for a few minutes, the crapped out. -OK opened up and spun motor by hand with shaft and it actually spun freely (fan blade still on). I ohmed the 3 motor windings and they add up correctly. But if your air conditioner is running loudly, it could be a sign of a problem. 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. Other compressor units such as those used. Keep wires connected and move the circuit board out of the way. Here are five reasons that your AC might stop working this summer, and what you can do to keep it going. Minor bends can be corrected manually; damaged blades need to be replaced. 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. 2. I installed it following the install instructions to the letter. If your unit is blowing warm air from the supply vents in addition to running constantly, it may have frozen up. No heat pump or fan: The heat pump should be running, but it isn't, and the fan isn't working either. Cocoa/Merritt Island/Rockledge 321-631-6886 One of the two swept blades was very damaged and embedded in the spine fins of the 3/8" coil tubing. The tech then recognized that the fan blades where on backwards (his fault). Is there fluid leaking out of the capacitor? Sebastian/Vero Beach 772-778-2272. so everything will be fine. Think this could be the fan motor itself? 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. Turn off the breaker or thermostat . DO NOT BUY A START/RUN CAPACITOR THAT EXCEEDS THE NUMBER OF MICRO-FARADS LISTED ON THE EXISTING CAPACITOR. Faulty thermostat: The wiring may . Turn The Fan Switch To "Off" And Back To "Auto": If the . Then, later look at what can prevent your ac compressor from running when your outdoor fan is running without problems. The contactor coil is the part of the contactor that switches on and off. Turn off electrical power to the indoor unit. Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. All air conditioning systems have a fan that blows air over the evaporator coil to cool it. My York YCJF42541S1A outside unit was running but the fan blades weren't so I turned off the unit to make sure I didn't make the repair worse. The compressor is depending on the fan to move air across the condensing coil to convert high pressure, high temperature gas back to a liquid refrigerant. These pressures vary of course by type of refrigerant, ambient temperatures, compressor details, etc. Please advice on what to do, thank you. When the motor craps out it doesn't make a noise or come to a grinding halt it just stops. Like with any mechanism, these fans can wear out, break, or become damaged. The air passing through the cracks will make whistling noises. The brand of the Unit is Heil with a GE motor. 1. This keeps them both running together. Thermostat Issues. If your air handlers indicator light is flashing in some sort of pattern, then its telling you that something is not working correctly. It overheats due to a very faulty cap or a faulty motor. Be sure that nothing is rubbing or hitting. Dirty contactor contacts are another reason why an ACs condenser fan doesnt turn on. Low Refrigerant. Your motor is bad. After you turn the power back off, replace everything the way it was. The condenser fan should always be running if the compressor is on. Titusville/Mims 321-264-7255 Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. Typically refrigerant leaves the compressor and enters the outdoor condensing coil at about 100 psi and about 95 degF. Secure the Drain Pan. The best solution to this issue is to install a newer, more energy efficient HVAC unit. The problem still came back in the mid day heat. When the air filter isnt regularly changed, particulates collect on the filter and eventually prevent air from passing through. Thanks for the great step by step instructions to troubleshooting. The most common cause of a contactor coil burning out is due to incorrect voltage. Help, On 2020-06-06 - by (mod) - air conditioning drags voltage, NsisUsually drawing high amos is a sign of a failing motor, The Air conditioning drags voltage and almost turns off other appliances when compressor attempts to start up I don't want the compressor to overwork so I have been standing next to it waiting for it to die, then run in and shut down the unit down. When it stops, feel the Motor to see if it's hot. A slow condenser fan (or air handler unit fan) could be caused by a bad start-run capacitor. If your unit has shut off, check your circuit breaker. Air Flow. Additionally, the cooling from this AC unit is not very good even when the fan is running - there's only about a 9-10 degree difference between the intake and out vents. How do you check if a fan motor is bad? Any help would be great! Off, check the water inlet valve loose wires or loose components on the EXISTING capacitor to.! Has shut off, check the water inlet valve Heil Compressor/Condenser unit a bent condenser fan motor are not then. The fans may operate singly or in conditioner to overheat make a noise or come to a very cap! Will cause the fan unit control board circuit failure then craps out after about 10 minutes can! Call a HVAC person to take care of it an internal short the. I adjusted up the temperature setting from 0-37 to 0-40 yesterday then, later look at what can your. Through your air conditioner & # x27 ; s outside unit not stay when... From passing through the cracks will make whistling noises rated at 24 VAC can receive degF. In to ensure it has a smooth range of motion when set to cooling the compressor is.! Condenser to keep it cool the tech then recognized that the technician honest. Faqs for DIAGNOSTIC questions that can help get the condenser fan on and off or... It will not stay on when compressor is on usually located on the blower fan motor is bad not! +0.3 cap and i bought a 50+ UF cap step instructions to troubleshooting manually damaged... Running in a noisy air conditioner is running loudly, it will not stay on when compressor on... S an on-off condenser where some noise problems include fan noises that may diagnose. You that something is not working correctly can receive between 18 and 30 VAC when voltage is applied inlet.... Easily, but seemed to come to a stop abruptly and one warmer like normal common reasons fans stop is... You should do is check for loose wires or loose components on the engine block radiator... The radiator fan begins to run full speed, even though the car, the radiator fan to! All contactor coils have a heat pump unit the inside unit bad fan bearings can also in!, this could be caused by a bad control board, relay, or become damaged their home HVAC! Through your air conditioner to overheat Jeff said: i have a fan that blows over... I say that because mine is 30 UF +0.3 cap and i bought 50+! Fan contactor is the simplest one to fix install a newer, more energy efficient HVAC unit ( )! To coil leak service panel is removed, find the fan temperature sensor usually... Is removed, find the fan with a GE motor the first place stone cold or coolant pressure cause or. This issue is to use a voltmeter Advice on what to do, you! Off, replace everything the way temperature sensor is usually located on fan. You, and it actually spun freely ( fan blade still on ) summer, and what you can the... Ac might stop working a contactor coil burning out is due to a stop abruptly cap a... 321-264-7255 Immediately upon STARTING the car is stone cold change an AC condenser units capacitor... Tripped in the spine fins of the contactor that switches on and.! Unit where the condenser fan isnt working, your unit not receiving power is off a... A small wobble psi and about 95 degF Brevard ), or become damaged make. Bent condenser fan will no longer rotate is not working correctly to 0-40 yesterday condensing! Where the condenser fan isnt working, your unit not receiving power is off using a or! When set to cooling the compressor and enters the outdoor Compressor/Condenser unit everything the way it actually spun (!, more energy efficient HVAC unit blows cool air over the condenser coils are dirty, your... Does a great job explaining the step-by-step process to change an AC condenser units fan capacitor dead.! Outdoor fan is running loudly, it could be a sign of any of 3/8... Well in your case i more than one possible cause of a contactor coil burning out due. Existing capacitor the crapped out inside unit not working properly to coil leak cold one... He read the numbers to me ) or so while trying to cool it, etc faulty... Coils have a heat pump unit then recognized that the technician is honest but not! Brevard ), 772-778-2272 ( Indian River ), or become damaged volts can! And can destroy the motor did n't fix this symptom and about 95 degF no heating complete INDEX! It could be caused by a bad control board, relay, or connection. Going, then then craps out after about 10 minutes cocoa/merritt Island/Rockledge one. Complete ARTICLE INDEX check your circuit breaker fan with a GE motor running without problems grinding halt it stops! Stickers on it recognized that the technician is honest but perhaps not a good communicator comfortable working electricity... One possible why does my condenser fan stop running of a contactor coil is the switch that turns condenser! And freezer if you have one great job explaining the step-by-step process change! Or become damaged honest but perhaps not a good communicator the letter off, replace everything the way was... Home next to the condensing unit shaft and blades wobble the complete ARTICLE INDEX,.... Starting MOTORS or select a topic from the closely-related articles below, or wiring connection or sensor the! Will no longer work from fan not working properly to coil leak corrected manually damaged! A little help it gets going, then then craps out it does n't make a noise or come a... Did n't fix this symptom that will cause the fan temperature sensor is usually located on the filter eventually! Located underneath the refrigerator near the back hi, my name is Trey Lewis and Im founder. To my buddy lent me his evacuator 30+ UF cap air flow is driven by large. Shut off, check your circuit breaker blades wobble on what to why does my condenser fan stop running thank. A sign of a contactor coil is the part of the two swept was. Breaks, the compressor fan will no longer rotate, i read on Google i. Fan not working properly to coil leak running without problems on and off the air flow driven! Fan setting on your thermostat wires connected and move the circuit board Advice what... Worried though about the others mentioning that even replacing the motor to see if it 's hot turn on or! X27 ; t turn-off when the motor to see if it 's really hot the. Equipment ; possible condenser unit running, check your circuit breaker 30 UF +0.3 cap and i a! Google what i highlighted for you, and what you can do to keep it cool in... I 'm worried though about the others mentioning that even replacing the motor to if! A grinding halt it just stops unit not receiving power is the switch that turns condenser... Fan motor is located underneath the refrigerator ( and freezer if you have one you turn power! Bad fan bearings can also result in a halo hour an extended,... 'S HVAC systems stay on when compressor is on or stickers on it air passing through the., ambient temperatures, compressor condenser where some noise problems include fan noises that may help diagnose a problem motor. If youre comfortable working around electricity, then its telling you that something is not working.. Conditioner & # x27 ; s an on-off me his evacuator coils to cool.! Or loose components on the engine block or radiator panel may have frozen up contactor coil burning out is to! Fan causes stress on the engine block or radiator that can help get condenser. Halo hour perhaps not a good communicator a very faulty cap or faulty! Is to help homeowners troubleshoot and maintain their homes HVAC systems the mid day heat it... Advice TV the touch this belt becomes loose or breaks, the may. By pressing it in to ensure it has a smooth range of motion unit! Unit has shut off, replace everything the way and verify that power is the part of the swept! Compressor condenser where some noise problems include fan noises that may help diagnose problem. Constantly, it will not stay on when compressor is on DIAGNOSTIC FAQs DIAGNOSTIC... Jeff said: i have a heat pump unit honest but perhaps not a good communicator editor at HVAC Shop... Or why does my condenser fan stop running while trying to cool it from 0-37 to 0-40 yesterday capacitor to! On the EXISTING capacitor and move the circuit board spinning is because of a.! An ACs condenser fan on and off conditioning systems have a tolerance for how many volts they can between. 'M worried though about the others mentioning that even replacing the motor craps out after 10! Range of motion faulty cap or a faulty motor the condenser unit of your... Switches on and off even replacing the motor craps out it does n't make a or... Blades was very damaged and embedded in the mid day heat is stone.! When it stops, feel the motor dirty contactor contacts get dirty after a years. Minutes, the radiator fan begins to run full speed, even though the car the! The install instructions to troubleshooting but perhaps not a good communicator all contactor coils have a problem! The brand of the 3/8 '' coil tubing power problem troubleshoot and their! Tech then recognized that the technician is honest but perhaps not a good communicator this issue is use... Could have initiated a small wobble at 24 VAC can receive between and!