Ran into a very strange situation with my 3 ton HVAC heat pump. My guess is no low speed, but we need to know all circumstances in which that speed is used to assure dropping it is ok. Bob:I would leave the system OFF entirely until at the very least you're sure that you put in the proper charge of refrigerant. 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. If the capacitor is not bulging or leaking, replace the condenser fan motor. My heat pump has a similar issue only in reverse. It is these fans that blow the outdoor air across the condenser coil. 3. On 2020-06-17 - by (mod) - Humming fan motor. Shouldn't the coil last longer than that? Consult the repair manual for your specific YMME (year, make, model, engine) for details on exactly how they are activated. DeniseThere is probably something here that we don't understand. The screws were still secure, but this could have initiated a small wobble. 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. I got everything hooked up and my buddy lent me his evacuator. I had a HVAC Repair company come out over 5 times trying to fix it. Could this just be the run capacitor? Also. Our central A.C. compressor sketch at left shows the condenser fan blades in the top of the unit (red line). The indoor blower continues to run but no cooling refrigerant is being presented in the indoor cooling coil. Got up this morning and it was off, but the unit was still running. . I could hear the lines charging and again, no leaks. Fan is brand new. Air Supply Heating and Air Conditioning has experience troubleshooting the isolated components that are giving you trouble in your Greater Las Vegas, Nevada home or business’s air conditioner; including the condenser. Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. Last winter I had a peerless high efficiency fry because my filler valve malfunctioned. 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 A condenser fan motor is a component in the condensing unit of an HVAC system, which is located outdoors. Humming fan motor usually means either a bad starting cap or a seized motor. ... Also, detecting and fixing problems early can help you avoid expensive repairs in the future. Capacitor, 240V relay both good. Capacitor is brand new. I installed it following the install instructions to the letter. When I switch my AC on,it takes few minute then the outer unit start working( both the fan and the motor).But few minute later the fan stops whilst the motor continue working. Next, look through the … The cooled refrigerant then moves into the evaporator. The new motor is a 3 wire with yellow, brown, and black. How to Replace a Condenser Fan Motor. (May 30, 2020) Jeff said:I have a heat pump unit where the condenser fan motor has burned up. But it is indeed also normal for the fan on-off cycle to sometimes be different from the compressor motor on-off cycle. I guess that was what I was asking, can you go from fan not working properly to coil leak? The unit cooled fine until late last week when we noticed it being extra warm but we have had a mild spring until the last couple of weeks. Turn off power, visually inspect fan and fan blades: are blades cut, bent, or damaged? Sketch from Carson Dunlop Associates. You may also need to take a look in the IO manual for your condenser unit to understand each of the features or functions indicated by the wires. Keep your cool and check out these common condenser fan and radiator fan problems and how to fix them. 9 Potential Causes, How to Prevent Your Classic Car From Overheating, Dodge Ram 1500 Running Rough - Ignition Wire Problem, Dodge Grand Caravan Flashing LED Display After Battery Disconnect. If it isn't seized, check the control voltage on the relay that controls it. Could be a bad start-run capacitor or a bad control board. Ensure power to the unit is turned off. But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on. That's because an overcharge can send liquid refrigerant into the compressor - causing its destruction. The control module for the ECM condenser fan motor is preprogrammed at the factory. The capacitor helps the fan motor run. JoyceFrom the very little we know about that situation that you described it would make sense to leave the circuit off completely for safety. 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. Tech came out and replaced the fan motor. Installing a fan motor and capacitor where the capacitor does not match the specs on the label of the fan motor. The fact that your fan is reversing direction tells me that this is a heat pump and the controls are miswired or oscillating between heating and cooling, or there's a fan wiring error - as the unit's new. I will contact pioneer. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? (May 20, 2015) Aubrey said:Correct. Typically this is caused by an internal short in the motor windings. Your might ask for an explanation and let me know what you're told. This can leave the fan motor running. On your site there was a video on how to swap out motors for my refrigerator. by Saum Hadi Posted on October 9, 2019. Jim, thanks so much for the very nice feedback - that's just super. If the fan motor turned on and then turned off what is the defect of my arcondition? Carrier 50pd06 unit installation manualzz 5 reasons why your central air conditioner fan is not working carrier 50pd06 unit installation manualzz hvac fan motor wiring electrical 2019 air conditioner repair s average ac. If your HVAC system is getting power but your condenser fan is still not working, then you probably have a problem with the fan or motor, which will require the services of a professional HVAC technician. By process of elimination I concluded that the condenser was working fine since the freezer seemed to work fine. Our page top photo of a compressor/condenser fan unit shows that a stick had fallen into the fan, blocking the blades and preventing the fan from starting. The fan does not stay off for a "long" time. Reader Question: (May 18, 2015) Aubrey said: when set to cooling the compressor fan stops and starts. So I'm unclear why you had to charge your unit, though perhaps you followed what I'll describe below as a vacuum then charge procedure.IF the refrigerant charge were lost, the service tech would have pulled a vacuum on the system for 24 hours or longer, then put in the measured charge of refrigerant of the proper type, and would have confirmed proper operation, perhaps measuring temperatures in the refrigerant lines and in the air in and out of the condenser unit or the indoor cooling unit.Below is an example - for other readers, of a Pioneer mini-split AC system.If you don't have all of the manuals for your system you can download them from Pioneer or directly here at InspectApedia.com atPIONEER MINI SPLIT SERIES INSTALLATION MANUAL [PDF]PIONEER MINI SPLIT SERIES SERVICE & REPAIR MANUAL [PDF]PIONEER MINI SPLIT SERIES USERS MANUAL [PDF]I'd contact Pioneer directly at their tech support department to ask for further help with that P4 error.Contact Pioneer at(800) 919-0150https://www.pioneerminisplit.com/. hello, new to here, new to heating and cooling. Engines work hard, summer, winter, spring, or fall, and just like people sweat to release excess body heat, the radiator fan and condenser fan pull heat out of the engine and cabin. 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. See COMPRESSOR / CONDENSER INSPECTION CHECKLIST for a simple checklist for the outdoor compressor/condenser unit. From everything I read, if the motor is not working then it could be a power or contactor issue, right? Most modern cars have done away with the fan clutch and are equipped with a pair of electric fans, mounted forward or behind the radiator and condenser. The wiring diagram just above may not apply. Look out for these signs of a bad condenser fan motor or blower motor. Just had an older unit replaced by a new 3.5 ton inside air handler and outside condenser. The new 3 wire fan doesn't have this wire. 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.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. Used in a refrigerator, the condenser fan motor moves the condenser fan blade to direct and move air across the condenser coil. Anything else you can think of to ask about this situation? 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. The evaporator fan can be found behind the rear panel of the freezer and testing it yourself can help you troubleshoot freezer issues and save you money in repairs. 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. 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. I then opened the service valve port to charge the line set with freon (whatever the new stuff is called). (May 19, 2015) Anonymous said:We just talked to someone in person that has advanced knowledge of our problem and he said this is a normal built in feature and his unit does the same thing. By using LiveAbout, you accept our. Replacing a condenser fan motor is a fairly simple task that most reasonable handy homeowners can complete themselves with just a little bit of know-how in just a few simple steps: Gather the correct replacement parts and required tools. We also provide a MASTER INDEX to this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. Low Coolant Level Might Leave the Temperature Sensor Exposed. Thank you for your response. The old motor had 4 wires: black, white, green, and brown. To determine if the condenser motor is working, use a multimeter to test the incoming voltage to the motor. Check that power is on to the outdoor unit and that the indoor thermostat is calling for cooling and set to cooling mode. 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. Since then, I bought a mini split pioneer seer 19? in SPLIT SYSTEM AIR CONDITIONERS & HEAT PUMPS designs may mount the fan in a vertical position blowing out of the side of the compressor unit rather than out of the compressor top shown in our sketch. Or see FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs for diagnostic questions that can help get the condenser fan working. Inside the house is warm and could have been blowing warm air. If the condenser fan motor is receiving the correct voltage but the motor still won’t run, inspect the capacitor to ensure that it is not at fault. - 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 power supply is fine and the windings are in good shape, check the capacitor next. 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. ugh, I mean I did those 2 tasks separately hehe. I notice the red on the unit is coming off of a small circuit board that says low. Apologies for the delay. Am I barking up the wrong tree and should I be looking elsewhere? Upon testing the condenser motor, it runs and spins true. If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. The unit is 8 years old. I'm concerned that the leak in your wall could have shorted an electrical connection or electrical box device. Condenser Fan Motor. evaluation of air conditioner compressor noises, hard starting, lost cooling capacity, and detection of a burned out compressor or A/C compressors at or near end of their life. The air conditioner or heat pump condensing coil (shown at left) receives high pressure refrigerant gas from the compressor and cools this refrigerant gas back to a liquid state. The condenser fan motor pushes air outward, past the condenser. Fan control circuit board is brand new. On 2020-03-02 by Anonymous This movement from air transfers heat from the refrigerant to the surrounding. 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 The line sets didn't even get cold or hot by even a degree difference. FAN, COMPRESSOR / CONDENSER UNIT at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. Our condenser motor, which is the motor that turns the fan in a condenser unit, is specially designed to a high quality standard that allows for expert control and trouble-free operation. 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. 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 -. The tech's writing is hard to read. I did the vacuum and charge thing, meaning I hooked an evacuator pump on the system and then just opened the service valve so the R410a could fill the line set. Troubleshooting ECM Motors for Fan Coils Check LOW VOLTAGE at R and C, at the control board Pins 8, 9 of twelve pin connector (SHOULD HAVE ~24VAC) FAN COIL PINS @ CIRCUIT BOARD CHECK W1, Y/Y2, Y1 (USES 24VAC) AUX/HEAT KW/CFM, AC/HP SIZE, SYSTEM TYPE, AC/HP ADJUST, ON/OFF Of course, no search engine result should be mistaken for a diagnosis, but when many vehicles share common problems, this can shorten diagnostic time and effort by pointing you in a common direction.If testing the suggested component doesn’t result in a fix, check the rest of the system and ask a local trusted mechanic for advice. To determine if the condenser motor is working, use a multimeter to test the incoming voltage to the motor. Could temp on the outside coils or coolant pressure cause this or is this normal on a heat pump unit? An internal short that is grounding the fan motor windings can leave the fan running, but abnormally slowly. Also possibly there may be no power to the fan and fan blades are moving due to local breeze blowing through the unit. The green line marks a common location for the fan control circuitry, and the blue line marks the fan motor. The wires from the motor are hooked up to this control module. But it seems to me that that condition should not be for long. 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 Initial, simple diagnostic checks of the air conditioning compressor are also described. Turn off power and assure that the fan blade is secured to the fan motor shaft. If your unit's fan is not working efficiently or at all, however, your unit's overall performance can diminish. The final solution was for a separate capacitor that matched the fan's requirements to be installed. More likely there is an electrical or control problem. yes, I am not familiar with the proper terms. An Overheating Engine Could Indicate a Problem with the Condenser Fan. When I turned it back on the fan came on. Windings on compressor and fan seem to be reasonable (Fan run winding 32.2 ohms, start winding 94.4, overall 125.9 ohms). Step 3. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". In a nut shell, the condenser is responsible from moving the heat that was removed from the inside air, to the outdoors. Was... interesting to learn. To repair a buzzing or noisy refrigerator you will need some basic tools and of course the fan motor you are going to swap out. What you will learn from the Condenser Fan Motor Repair article: 1) Specific description of a motors job along with some technical details 2) Air Conditioner & heat pump fan motor operation 3) Fan motor troubleshooting basics 4) Condensing unit fan motor repair warning and disclaimer - Turn the power off before working on the fan Possible low voltage at the equipment; possible condenser unit control board circuit failure. 7 Possible Causes, How to Tell If Your Fan Clutch Is Going Bad, Diagnosing a "Fan Won't Blow" Problem in Cars, Understanding the Components of Your Car's AC, How to Diagnose a Ford Expedition Transmission Problem, Cruise Control Not Working? Typically refrigerant leaves the compressor and enters the outdoor condensing coil at about 100 psi and about 95 degF. Variable Speed ECM Condenser Fan Motors - Troubleshooting Tips. We have no relationship with advertisers, products, or services discussed at this website. And if used on a generating set it seems to power off the generating set, though testing the compressor with a digital multimeter it seems it's still functional, or I suppose so The condenser fan motor is one of the most important components in an air conditioner (AC) system. The motor may continue to run, even with the run capacitor disconnected, due to the short. Does this seem reasonable? Ordered a new one off Amazon with the same CAP rating. Depending on the vehicle, electric fans may be activated in different ways, based on coolant temperature or air conditioner activation. Please advice on what to do, thank you. 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 … On 2020-07-22 18:15:33.595128 - by (mod) -, JoanneOn most units that would be backwards, I had a new comparator and fan motor put on my Trane compressors/condenser outside. at COMPRESSORE FAILURE DIAGNOSIS. I am not convinced the fan was fixed either the first or second visit. This condenser fan motor kit includes a motor, fan blade, wire harness, and screws. A slow condenser fan (or air handler unit fan) could be caused by a bad start-run capacitor. If your freezer stops getting cold but you can hear the condenser motor in the refrigerator working, there’s a good chance the problem is with your evaporator fan motor. I've included pictures of the schematic as you suggested.Really hoping this new fan is able to be used. Thank you for the helpful comment. Moral of the story: do it yourself and use the right capacitor. Before replacing a blown fuse, test the system for short circuits, using a multimeter. Carrier Condenser Fan Motor Troubleshooting. The coil was not penetrated & maintains pressure. Please note: The manufacturer has changed the appearance of … It had gotten down to 62 degrees. Troubleshooting your Trane air contioner's fan can maximize efficiency. Is it just as simple as the compressor drive error? Had to turn the unit off for about an hour. Changed compressor starter capacitor but not the dual run capacitor. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. I don't want to spend the money if it is a capacitor. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. The ECM condenser fan motor connects to an electronic control module. Check for a fan blade hitting an obstruction in the unit; possible failing blower fan motor. Also see NOISES, COMPRESSOR CONDENSER where some noise problems include fan noises that may help diagnose a problem. The problem came back. The new motor has 5 wires: Black, white, green, brown, and brown/white. I replaced the old motor in my a/c because (I assume) the bearings went bad. The guages were around 270 (according to my buddy as he read the numbers to me) or so while trying to cool. 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. Is the fan blade assembly secured to the fan motor shaft? Installing a fan motor where lots of moisture is present like from a leaking gutter or down spout. If either of these conditions exists, the fan motor needs to be replaced. Nothing. 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. Improper settings, problems with the circuit breaker and freezing condenser coils are some of the common issues likely to interfere with your air conditioner's fan. 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). Continue reading at CAPACITORS for HARD STARTING MOTORS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. No cooling, no heating. Sorry Jedson but I don't understand the question. Also, noticed the old fan wire actually has a quick connect coupler for all four wires to connect into a circuit board. Remove the fan motor blades before removing the fan motor from the grill. 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. Bob,Thank you for the helpful diagnostic question about your Pioneer brand Mini Split AC unit. JonI think you are describing the case in which the outdoor compressor condenser unit is shutting down shortly after startup. Above: a wiring diagram for a Heil Compressor/Condenser unit, courtesy of reader Jeff. The problem still came back in the mid day heat. Question: condenser unit fan startup troubleshooting - condenser fan starts slowly or stops completely. The outdoor unit began making a low tone hum/vibration like the compressor was trying to turn on and the fan kicked on. Aubrey I doubt that outdoor temperature would explain the problem you cite. I ohmed the 3 motor windings and they add up correctly. Other compressor units such as those used. If it won't, it's seized, and must be replaced. Thanks. A condenser in a car air conditioner ensures that you get cool air from the vents of your air conditioner when you turn the AC on. Appliance: Model AP3120994 My Repair & Advice Purchased a replacement condenser fan motor kit from AppliancePartsPros and swapped out the bad one with the replacement. First determine where the noise is coming from. Check for loose wires or loose components on the fan unit control circuit board. I had a problem with my Condenser unit. Watch out: the wiring instructions and diagram for your specific air conditioner or heat pump compressor/condenser unit are model dependent. Fan control circuit board is brand new. Capacitor is brand new. Now the compressor comes on (freon line gets cold) however; the condenser fan is not running but humming. LiveAbout uses cookies to provide you with a great user experience. Sorry taken so log to reply, I work a lot of hours. If your AC has stopped blowing air, has weak airflow, or you hear unusual noises, do a quick inspection of the fan motor. I ended up replacing with a navian high efficiency boiler. Indeed you point out that when replacing a start/run capacitor itnisnimportant to use the proper one. I dried the lines and did the pressure testing and all held perfectly. Minor bends can be corrected manually; damaged blades need to be replaced. A condenser fan that won't start when power is turned on, but whose blades will spin easily when power is off may have a worn fan motor shaft bearing. See CONTROL CIRCUIT BOARD, A/C for details. 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. If you're asking what's wrong if a fan stops intermittently when it should keep running, AND if you mean the fan on the outdoor compressor/condenser unit, then your tech will look fist for a bad electrical connection or failing fan relay. Condenser Fan Motor Troubleshooting. I'm not sure how refrigerant leak would make the fan run intermittently. On our outdoor heat pump unit, when set to heating compressor and compressor fans works PERFECT! When considering condenser fan problems on your own vehicle, one of your best sources of information, aside from the repair manual, can be a quick online search for TSBs, recalls, and enthusiast forums. 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.
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