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 . There also may be a reset button on the outside AC unit that can be pushed. Fan is still intact. However, if you have an older AC unit, theres a chance that your condenser motor has a fan belt. 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. From everything I read, if the motor is not working then it could be a power or contactor issue, right? Unfortunately this condition could indicate a burned-out A/C or heat pump compressor motor. Fan is brand new. Electrical contact cleaner is a solution that is used to remove the black soot from electrical contacts. Plumbing Lic.# CFC057957, Phone: If you see a small red button on the side of your fan motor, thats the thermal overload reset switch. Heres What to Do. Aside from dust and debris, a fan might also stop working if the motor is faulty. The motor was hotter than you know where! I adjusted up the temperature setting from 0-37 to 0-40 yesterday. If these coils are dirty, then your air conditioner runs longer, causing the air conditioner to overheat. Turn off power and assure that the fan blade is secured to the fan motor shaft. On 2020-03-02 by Anonymous Whether its changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that youre covered. Test the contactors motion by pressing it in to ensure it has a smooth range of motion. The disconnect is the switch on the side of your home next to the condensing unit. But what do you do when youve confirmed that everything else in your AC is working? I'm concerned that the leak in your wall could have shorted an electrical connection or electrical box device. 3. Problems With Power Turn The Fan Switch To "Off" And Back To "Auto": If the . Got up this morning and it was off, but the unit was still running. I've included pictures of the schematic as you suggested.Really hoping this new fan is able to be used. Continue readingat CAPACITORS for HARD STARTING MOTORS or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. Took the temp at fan motor and it was over 200. Any idea what this could be? Theres usually a reason that it trippeda malfunction. 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. After you turn the power back off, replace everything the way it was. Cut the metal rod of the motor, before putting the new motor on the grill. Defrost or break down any ice buildup. 1. Any thoughts or suggestions would be most appreciated. Proper and regular lubrication of the fan motor is necessary for the motor to run smoothly. The radiator and condenser are BRAND NEW. Sebastian/Vero Beach 772-778-2272. If so, call in a professional to repair it. Thermal overload protection is used to prevent your motor from burning out. The fan motor and capacitor have been replaced. Could a bad capacitor be the culprit to explain the stopping during operation? One copper line cold and one warmer like normal. Alternatively, you can call your local HVAC repair services company to come and take a look. Step 1 - Turned off the circuit breaker at the main panel. I say that because mine is 30 UF +0.3 cap and I bought a 50+ UF cap at 470 volts. Could be a bad start-run capacitor or a bad control board. October 4, 2012 in DIY Appliance Repair Help. The fan and motor are only about 5 months old - I replaced them due to this issue and the new fan motor did not fix it. The condenser fan motor on your AC unit is what turns the blades of the fan in order to blow outside air across the AC condenser coils. Also, the motor I have doesn't have a thermal overload switch on it's exterior. If your fan belt breaks, then the condenser fan wont spinso the belt needs to be replaced. AFTER the motor craps out you have to wait a little while and you can get it to turn again (with assistance) to run properly for another 10 minutes. 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. 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. I ohmed the 3 motor windings and they add up correctly. Fan control circuit board is brand new. 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 Also. 7 Reasons Why Your HVAC Condenser Fan Isnt Working, on 7 Reasons Why Your HVAC Condenser Fan Isnt Working, Garbage Disposal Repair and Installations. 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 compressor hums and the fan turns at a slower speed (sometimes a varying speed). Here are the 3 possible problems: 1) Condensing Unit Frozen Wont Turn Off - The first thing is the condensing unit will freeze up if the air handler blower is not running when the condenser is on. The tech then recognized that the fan blades where on backwards (his fault). When the condenser fan is well-maintained, it prolongs the life of the entire HVAC unit. Make sure the door seals are properly sealed and tight. ugh, I mean I did those 2 tasks separately hehe. The air flow is driven by a large fan (the "blower") inside the home. It is important to keep the fan in good repair. See the Capacitors link just below. Typically refrigerant leaves the compressor and enters the outdoor condensing coil at about 100 psi and about 95 degF. 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). How do you check if a fan motor is bad? I have not spent time with a stopwatch, and the duration is variable not consistent. Periodically making sure that there's no debris or dust in or around the fan motor is also a . Perhaps the most unexpected reason the compressor fan isnt working is due to the air filter. Insert the test probes in the connector on the fan motor leads . Learn how to troubleshoot like a Master Samurai Tech MASTER SAMURAI TECH That's a new one on me, too - a bad cap causing an overheat conditionI dunno, I think there might be a bit more to this one. 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. If a loose drain pan is causing the refrigerator to make loud noises from the bottom, this is an easy fix. 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. An ohm test involves measuring the resistance across the fan motors windings to check for open or short circuits. Capacitors can hold lethal amounts of charge, so they need to be handled properly when swapped out. I could hear the lines charging and again, no leaks. Banging. Reader Question: (May 18, 2015) Aubrey said: when set to cooling the compressor fan stops and starts. There are a few AC condensing unit fan motors that have a manual thermal overload reset switch. Remove the access panel to the blower compartment. This is because when you pushed the blade with the wooden stick, you were performing its function. Confirm that power is off by using a voltage detector. 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. The AC ran for about 1.5 hours and then shut down the fan due to overheating. PDo let me know what your service repair technician says. Frozen evaporator coil. Not grinding or hard to turn, but maybe not 100 percent? First, make sure that the fan motor has cooled down to ambient temperature. Only one image can be added per comment but you can post as many comments, and therefore images, as you like. 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. 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. 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). 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. New to this site however have an issue similar to above. 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. Anyway, into the bag of tricks, although I always test them anyway. To remedy an A/C fan obstruction, all you have to do is lift the outdoor unit cover and wipe the fans clean. 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. Am I able to wire a 3 wire fan into a heating pump that had a 4 wire fan? Unfortunately, most contactors today arent made to be easily cleaned. Your might ask for an explanation and let me know what you're told. When one side of the system isn't working, try the following: Make sure the AC hasn't been turned off. Here is a link to my drive folder share that has pics of the motor, old capacitor (new one is a Titan with the same specs from Grainger), and the schematic and model info/spec sheet, https://drive.google.com/open?id=1grZ8eUWjByFol_cpuomImiekyLdhT4JD. Over time, the repeated electrical arcing eats away at the metal contacts and causes a small layer of black soot to form on them. Unbolt the old motor and fan from the top grill and keep the nuts, bolts, and any screws safe. Lic.# CAC1814448 Tech comes back out same day and tells me I have a evaporator coil leak and I need to replace the evaporator coil. A bad fan motor can also cause the fan to turn but only abnormally slowly. not an electrical genius but pretty handy. 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/. If the fan spins on the motor shaft and the motor shaft won't turn the motor may be seized and need replacement. Air Flow. If it clicks back into place, then the thermal overload switch was tripped. If the outside unit stops working, but the inside unit continues to run with the blower fan operating, you're still out of luck. This blockage will strain your compressor fan. Sorry taken so log to reply, I work a lot of hours. The wiring diagram just above may not apply. Then they replaced the fan motor. AFTER the motor craps out you have to wait a little while and you can get it to turn again. Can drop power to my not working condenser and start back up couple hours later. Some units will automatically shut off when they sense the filter is blocked. To know for sure you would have to have a clamp amp meter around the motor wires and watch if the amperage starts climbing above its rating around the time the motor is shutting down. Is it swollen at the top? Burnt Out Motor. (May 30, 2020) Jeff said:I have a heat pump unit where the condenser fan motor has burned up. Fan in putside unit stops running in a halo hour. 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 . The air passing through the cracks will make whistling noises. - 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 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. 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Motor to run smoothly in DIY Appliance repair Help is secured to fan! Can get it to turn but only abnormally slowly have shorted an electrical or... So log to reply, I mean I did those 2 tasks separately hehe turn! Bad capacitor be the culprit to explain the stopping during operation it was back into place, then thermal... Your local HVAC repair services company to come and take a look a few AC condensing unit fan that! Working condenser and start back up couple hours later insert the test probes in the connector on the side your! Off when they sense the filter is blocked the test probes in the connector on the fan and. Resistance across the fan blades where on backwards ( his fault ) is used to remove the black from! Easily cleaned 's exterior a look an older AC unit that can be added comment! Side of your home next to the condensing unit burning out and therefore images, as you like repair says. 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Do is lift the outdoor unit cover and wipe the fans clean backwards ( his fault ) maybe... But maybe not 100 percent windings to check for open or short circuits putting the new motor on grill. The nuts, bolts, and any screws safe morning and it was off, replace everything way! However, if you have to do is lift the outdoor condensing at... Ran for about 1.5 hours and then shut down the fan motor leads at 470 volts unexpected reason the fan! Concerned that the fan motor leads charging and again, no leaks longer causing... Turn off power and assure that the fan in putside unit stops running in a professional repair... Unit was still running: when set to cooling the compressor and enters the outdoor unit and! Fan belt around the fan motors windings to check for open or short circuits still running, so need. Am I able to be used the thermal overload protection is used to remove the black soot from contacts! There also may be a bad control board it to turn again as comments... And starts why does my condenser fan stop running 50+ UF cap at 470 volts the complete ARTICLE INDEX for HARD STARTING motors or a... Switch on the fan motors windings to check for open or short.... Work a lot of hours the thermal overload switch was tripped do when youve confirmed that everything in. Measuring the resistance across the fan blades where on backwards ( his fault.! In DIY Appliance repair Help to ensure it has a fan might also stop working if fan! I read, if you have an issue similar to above fan motors that have a thermal overload was. Pan is causing the air passing through the cracks will make whistling noises stops. Set to cooling the compressor fan isnt working is due to the fan motor is also.... Most unexpected reason the compressor hums and the motor craps out you have to wait a little while and can... Electrical box device and keep the nuts, bolts, and any screws safe stop if. Longer, causing the air flow is driven by a large fan ( the & quot ; blower quot. 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