Filter,and coils clean; ventsare open. Welcome to the forums. When the capacitor fails, the condenser fan will no longer rotate. I check the uF on the cap with my meter first thing. Hi, my ac fan seems to be over heating and shutting down. Works great for 10 minutes blowing 69at register on a 85 day with humidity. The AC ran for about 1.5 hours and then shut down the fan due to overheating. If the relay shorts or fails, it will not be able to . Any suggestions? However, if they're stuck, the compressor . Then they replaced the fan motor. 5. But it is indeed also normal for the fan on-off cycle to sometimes be different from the compressor motor on-off cycle. Remove the access panel to the blower compartment. with power removed, try turning the Motor, Appliance Repair Training Webinar Recordings. The unit is 8 years old. 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. After the power is off, use a screwdriver or small tool to remove the debris from the contactor. Let's assume that the technician is honest but perhaps not a good communicator. 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. I don't want to spend the money if it is a capacitor. Jim, thanks so much for the very nice feedback - that's just super. 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 . On occasion a "slow" outdoor fan may be due to a fan blade that is not secured to the fan motor shaft. 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. Are the bearings damaged or covered in sludge? I think it is a 13k but unit. Well after I took off the strap on the capacitor I noticed it has a slight bulge around by the back that I didn't notice at first. The condenser cooling fan comes as a complete unit, including the motor, housing and blades. InspectAPedia tolerates no conflicts of interest. I had a HVAC Repair company come out over 5 times trying to fix it. The fan does not stay off for a "long" time. 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. Last winter I had a peerless high efficiency fry because my filler valve malfunctioned. A bad fan motor can also cause the fan to turn but only abnormally slowly. Tech comes back out same day and tells me I have a evaporator coil leak and I need to replace the evaporator coil. Secure the Drain Pan. 4. One copper line cold and one warmer like normal. A bent condenser fan causes stress on the blower fan motor shaft and can destroy the motor. I've included pictures of the schematic as you suggested.Really hoping this new fan is able to be used. The new 3 wire fan doesn't have this wire. Just secure the pan back in place with the existing hardware to restore peace and quiet. I really appreciate your help!!! Got lucky and looks like the cheapie fix was the right fix. The fan stops on the condenser. Just had an older unit replaced by a new 3.5 ton inside air handler and outside condenser. If the compressor and condenser fan motor are not running then you likely have a power problem. 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). Humming fan motor usually means either a bad starting cap or a seized motor. Move the refrigerator away from the wall and unscrew the panel at the bottom back. not an electrical genius but pretty handy. My heat pump has a similar issue only in reverse. My AC condenser originally had a fan problem. Proper and regular lubrication of the fan motor is necessary for the motor to run smoothly. Fit the new motor in place and slide the fan onto the shaft, making sure it sits at the correct height to avoid catching on anything. Replaced capacitor because it was cheap and could get next day. Since this setting is not using the thermostat and is just running the blower to circulate air, it is up to the user to turn it on or off (much like a ceiling fan). First the capacitor was replaced. See CONTROL CIRCUIT BOARD, A/C for details. Any help would be great! Electrical contact cleaner is a solution that is used to remove the black soot from electrical contacts. The condenser fan motor itself is a part that can go bad. A burnt-out motor is yet another reason a condenser fan would stop working. 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. On the wiring diagram see component FSC - Fan Speed Control - I'll post an excerpt from your photo to help you find it. Once you find the fan capacitor, take a look at it. During that process, a short arc of electricity forms between the metal plates. Like with any mechanism, these fans can wear out, break, or become damaged. Possible low voltage at the equipment; possible condenser unit control board circuit failure. 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). The fan motor is located behind the fan itself. Does this seem reasonable? Eventually, the layer of black soot prevents the metal plates from forming contact with each other. In this article, Ill discuss what you should do when your ACs condenser fan stops running. After the service panel is removed, find the fan capacitor. If the fan contactor is broken, then the fan wont run. That's because an overcharge can send liquid refrigerant into the compressor - causing its destruction. There are a few AC condensing unit fan motors that have a manual thermal overload reset switch. Call us at 321-631-6886 (Brevard), 772-778-2272 (Indian River), or request service online. That could also mean that its bad. Unfortunately this condition could indicate a burned-out A/C or heat pump compressor motor. Is it just as simple as the compressor drive error? DO NOT BUY A START/RUN CAPACITOR THAT EXCEEDS THE NUMBER OF MICRO-FARADS LISTED ON THE EXISTING CAPACITOR. Just sharing this info for others. " Contactors are a relatively inexpensive item to replace, and youll have more peace of mind with a brand new contactor installed. Your might ask for an explanation and let me know what you're told. This fan blows building air across the evaporator coil (or cooling coil) to cool and dehumidify indoor building air. AC unit (old) has been running fine until couple days ago. A bad condenser fan has the capacity to cause the refrigerator to run non-stop. 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. 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?). That also means its bad. Condenser fan motor runs backwards. My goal for this website is to help homeowners troubleshoot and maintain their homes HVAC systems. If it clicks back into place, then the thermal overload switch was tripped. Thank you for your response. All contactor coils have a tolerance for how many volts they can receive. The problem still came back in the mid day heat. ugh, I mean I did those 2 tasks separately hehe. I'm not sure how refrigerant leak would make the fan run intermittently. Initial,simple diagnostic checks of the air conditioning compressor are also described. FAQ 1. The condenser fan should always be running if the compressor is on. 1. I have not spent time with a stopwatch, and the duration is variable not consistent. I had a problem with my Condenser 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. There are many reasons why a contactor may not work: When debris or insects get stuck inside the contactor, the contactor wont work. Easy enough to do anyway. The air passing through the cracks will make whistling noises. The condenser fan motor draws air over the condenser coils to cool them. Minor bends can be corrected manually; damaged blades need to be replaced. Periodically making sure that there's no debris or dust in or around the fan motor is also a . Shouldn't the coil last longer than that? Melbourne/Palm Bay 321-727-9969 Clogged air filter. If the condenser fan doesnt run when the compressor does, most ACs will shut down due to an imbalance of pressures. A common reason a condenser fan is continually running within a refrigerator is the thermostat. Change Your Fan Setting To Auto: Check to see if your fan is set to the "on" option. So it seems to cool very slowly. Since then, I bought a mini split pioneer seer 19? 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. How do you check if a fan motor is bad? 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. This sensor takes readings from the refrigerator (and freezer if you have one . Capacitor is brand new. Lack of maintenance: This is probably the most common reason that causes condenser fan motors to overheat and shut off. Jay does a great job explaining the step-by-step process to change an AC condenser units fan capacitor. 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. Thermal overload protection is used to prevent your motor from burning out. An ohm test involves measuring the resistance across the fan motors windings to check for open or short circuits. The problem came back. When it stops, feel the Motor to see if it's hot. My unit is 22 years old! I guess that was what I was asking, can you go from fan not working properly to coil leak? The tech then recognized that the fan blades where on backwards (his fault). I got everything hooked up and my buddy lent me his evacuator. Over time, the contactor switch gets worn, and will stop providing voltage to the condenser fan. 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. I ohmed the 3 motor windings and they add up correctly. The fan temperature sensor is usually located on the engine block or radiator. Or should I just replace fan and see what happens? Test the contactors motion by pressing it in to ensure it has a smooth range of motion. 21,873 Answers. Alternatively, you can call your local HVAC repair services company to come and take a look. Most air handlers and furnaces have a small flashing light on them. Theres usually a reason that it trippeda malfunction.

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