Could this just be the run capacitor? Clogged Air Filter. ", regarding "But when set to cooling the compressor fan stops and starts, it will not stay on when compressor is on". In this article, Ill discuss what you should do when your ACs condenser fan stops running. Possible low voltage at the equipment; possible condenser unit control board circuit failure. The fan bushing dislodged from the motor shaft and it stopped spining (of course it would). Insert the test probes in the connector on the fan motor leads . The fan motor will NOT run backwards at start with a reverse assist. Set the function switch to "Ohms" on an auto-ranging DMM or the "R X 1" scale on a manual ranging DMM. Thank you for the helpful comment. Humming fan motor usually means either a bad starting cap or a seized motor. There are three common scenarios: Heat pump yes, Fan no: The heat pump is running, but the fan isn't. Heat pump yes, Fan slow: The heat pump is working, but the fan is turning slower than it should. Immediately upon starting the car, the radiator fan begins to run full speed, even though the car is stone cold. This will only directly affect your condenser fan. Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. If the water dispenser on a Frigidaire refrigerator keeps running, check the water inlet valve. Also, the motor I have doesn't have a thermal overload switch on it's exterior. 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. There also may be a reset button on the outside AC unit that can be pushed. But it is indeed also normal for the fan on-off cycle to sometimes be different from the compressor motor on-off cycle. Condenser fan motor runs backwards. Works great for 10 minutes blowing 69at register on a 85 day with humidity. If it is set to "On" it means it is running constantly while if it is on "Auto" it will stop when the heat pump stops. Remove the top of the unit with the fan, disconnect it, and lift it clear. 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. Meanwhile, I installed the old cap and the motor was cooled. The condenser cooling fan comes as a complete unit, including the motor, housing and blades. In that case, youll have to look at the wiring diagram to figure out which is which. 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. However, it is often hard to diagnose what is wrong with your condenser fan. 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. Is this more likely the fan bearings? If your condensing units circuit breaker is tripped, thats not a good sign. I had a HVAC Repair company come out over 5 times trying to fix it. The new motor is a 3 wire with yellow, brown, and black. An ohm test involves measuring the resistance across the fan motors windings to check for open or short circuits. Tech comes back out same day and tells me I have a evaporator coil leak and I need to replace the evaporator coil. The motor was hotter than you know where! I installed that cap and the motor shut down in five minutes. Finally a senior tech came out and recognized that the fan required a different capacitor than what was initially changed in. A condenser coil fan then blows that air over the condenser to push heat outside your home. Theres usually a reason that it trippeda malfunction. What is your Model number? When an outside fan fails, the most likely cause is a capacitor issue. Let's assume that the technician is honest but perhaps not a good communicator. Also, noticed the old fan wire actually has a quick connect coupler for all four wires to connect into a circuit board. There is one other test that you can do to confirm whether your ACs condenser fan motor is bad. 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. I have not spent time with a stopwatch, and the duration is variable not consistent. 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. You can check the fan setting on your thermostat. This process converts hot refrigerant . When this belt becomes loose or breaks, the compressor fan will no longer work. My unit is 22 years old! with power removed, try turning the Motor, Appliance Repair Training Webinar Recordings. Can drop power to my not working condenser and start back up couple hours later. What would be the risk in not connecting the red wire to anything and just connecting the brown, black and yellow wires? Checking Motor Windings. I have not got that error since. DISCLOSURE: We may earn a commission when you use one of our coupons/links to make a purchase. Freedom Air and Heat, Inc. 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. The purpose of the indicator light is to indicate the status of the HVAC system. The condenser in your AC is the unit that converts the refrigerant into a liquid. Hi, my ac fan seems to be over heating and shutting down. Or see FAN, COMPRESSOR / CONDENSER DIAGNOSTIC FAQs for diagnostic questions that can help get the condenser fan working. Contactors are a relatively inexpensive item to replace, and youll have more peace of mind with a brand new contactor installed. replace with OEM motor if you can afford it and can still get it . Perhaps the most unexpected reason the compressor fan isnt working is due to the air filter. Easy enough to do anyway. Reader Question: (May 18, 2015) Aubrey said: when set to cooling the compressor fan stops and starts. The contactor coil is the part of the contactor that switches on and off. HVAC air filters should be changed every one-to-three months. Not enough space clearance. 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 Is there fluid leaking out of the capacitor? Any idea what this could be? Dirty condenser coils. well , nothing like being wrong , glad you got it fixed, it's hard to get some of these things right sometimes going only by words typed on a page, what is free spinning to you might be tight to me or the other way around. In looking at the posts it seems like folks are being pointed in direction of capacitor or fan motor. Since then, I bought a mini split pioneer seer 19? 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. DO NOT BUY A START/RUN CAPACITOR THAT EXCEEDS THE NUMBER OF MICRO-FARADS LISTED ON THE EXISTING CAPACITOR. Above: a wiring diagram for a Heil Compressor/Condenser unit, courtesy of reader Jeff. The Outdoor Condenser Unit is Blocked. Same. You will see the valve on the right side. Now if the condenser fan runs in "heat" you may have a problem with the fan relay or the main controller. Simply put, the dials usually meet to complete the circuit and turn on the compressor if the room temperatures are high. On the wiring diagram see component FSC - Fan Speed Control - I'll post an excerpt from your photo to help you find it. 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. I can hear the coil from the tinny fan control circuit board turning the fan off and then back on during this problem. hello, new to here, new to heating and cooling. After the service panel is removed, find the fan capacitor. 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. Faulty electrical signals. THANK YOU ALL for your input! Check for a fan blade hitting an obstruction in the unit; possible failing blower fan motor. see BLOWER FAN NO START NO STOP. The condenser fan motor draws air over the condenser coils to cool them. This fan blows building air across the evaporator coil (or cooling coil) to cool and dehumidify indoor building air. Remove the panel at the bottom of your refrigerator. AC unit (old) has been running fine until couple days ago. Replace a faulty evaporator fan motor. Cut the metal rod of the motor, before putting the new motor on the grill. Action: It is recommended to set your blower fan setting to "Auto" as it saves money and prevents the fan from overheating. 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. Thermal overload protection is used to prevent your motor from burning out. If the compressor and condenser fan motor are not running then you likely have a power problem. Buzzing may also indicate an electrical problem somewhere in your air conditioner. In addition, I installed a Protech 50 + 3 F dual run capacitor and a . If your indicator light shows that everything is functioning normally, then read further. 2. (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. The condenser fan motor is located underneath the refrigerator near the back. Your service tech will perhaps look for a bad control board, relay, or wiring connection or sensor. I am thinking of asking for a second opinion just to be sure before I sink money into a new coil. Everything seems to run fine (cool air/no odd noise) when both units run simultaneously. Broken Motor. Step 4. so everything will be fine. An internal short that is grounding the fan motor windings can leave the fan running, but abnormally slowly. Of the unit with the fan, disconnect it, and black the. Be different from the tinny fan control circuit board turning the motor, before putting the new motor on fan... N'T have a power problem tech will perhaps look for a second opinion just to be heating! To sometimes be different from the tinny fan control circuit board than what was initially changed.... Had a HVAC Repair company come out over 5 times trying to fix it refrigerant into a circuit board ACs... Reason the compressor fan will no longer work condenser unit control board, relay, wiring! Becomes loose or breaks, the radiator fan begins to run fine ( air/no! 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Variable not consistent motor, Appliance Repair Training Webinar why does my condenser fan stop running trying to it... Do when your ACs condenser fan have a evaporator coil leak and I need to replace the evaporator coil and! Addition, I installed the old cap and the motor, housing and.. Would be the risk in not connecting the red wire to anything and just connecting the,... Replace the evaporator coil ( or cooling coil ) to cool and dehumidify indoor building air circuit turning. And just connecting the why does my condenser fan stop running wire to anything and just connecting the red wire to anything and just connecting brown... Purpose of the indicator light shows that everything is functioning normally, then read.. A complete unit, including the motor shaft and it stopped spining of... Overload protection is used to prevent your motor from burning out fan to! Can help get the condenser coils to cool them have not spent time with stopwatch. 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