Sometimes power is supplied to both the compressor and the condenser fan motor by the same contactor. The refrigerator condenser fan plays an essential role in the refrigeration cycle, but not all refrigerators have one. If the AC doesn’t run or hum but you hear it clicking, the contactor probably needs to … 4500/- + Labour Rs. The unit is calling for cooling, runs for 20 mins before the condenser fan overheats and turns off, compressor continues to run. Even if the stat is in a bad location or has no short-cycle protection, it does not have any control over the condenser fan motor directly. The condenser fan motor is what runs to turn the fan blades and blow air across the condenser coil, where it cools the refrigerant from a hot gas into a liquid. Condenser Fan Run But Not The Compressor Motor by: Mel It has been very hot in S.E Michigan the last few months Central air unit working fine all along cools nicely. You have a heat pump. These two parts work together to cool your home, but don’t always turn on and off at the same time. (Not Recommended) Setting the FAN to “ON” is not needed to run the AC or HEAT. It will run when you have it on heat or air. A fan blade is designed to run in one direction, otherwise it only moves about half of the air it should be. The fan pulls air in through the condenser. Condenser fans draw outside air into the condenser. While it may make sense since it helps to circulate air and keep things from getting stuffy, it may actually be costing you more money in the end. Sign in to reply. Typically, this means one of two things: your outside AC hums but the fan doesn’t spin or the entire outside AC … If you have an emergency heat setting, then just the heat strip comes on with the blower. However, this is not what your original post said- that the outside (condenser) fan runs continually, even when the thermostat is off. You can google heat pumps and learn how they work. The condenser fan should run whenever the compressor is running. But the car's computer (PCM) should bring the idle speed back up. Therefore, to determine whether or not this part is working, you’ll have to walk outside and look at the fan through the vents of the condenser unit. Don't see any bad wiring connection. "Radiator fan does not run at all, but condenser fan runs with A/C ON Radiator and condenser fan circuit troubleshooting A (see page 10-22). either way, he needs to come back and fix that for free, unless you are just mistaken about direction of flow. The house stays nice and cool but the fan doesn't turn off even when I turn off the a/c. Posted by 2 months ago. Thermostat has nothing to do with the condenser fan motor overheating. The fan in your AC unit helps circulate air throughout your home. One problem that you may experience with your outside air conditioner is when the fan does not come on. It helps make the condenser fan motor more efficient. The air conditioner fan is located in the condenser unit, the portion outside your home. Heat pump is used in temperate countries and can be used to operate in cooling or heating mode. Hi all, I live in CT, which is a chilly 26 degrees tonight. Sitting still it doesn't cool and the rad fan only seems to run when engine temp is calling for it. How to Turn the Blower on Without Running the Furnace. Refrigerator Condenser Fan Motor Troubleshooting. Without the run capacitor in the circuit, the motor will still try to run and may spin slowly because it is now very inefficient - This is bad. if the fans run in reverse, then it would be sucking where it should be blowing. When the a/c is off the fan … If you lose over 200 rpm and idle speed doesn’t rise again, then there’s a problem. Both radiator fans should always run when the coolant temperature sensor in … Heat Pump AC Condenser Fan Motor Not Turning - Both heat pumps and air conditioners use the process of refrigeration to provide heating and cooling.One of the major components of that process is the condenser.A major component of the condenser is a condenser fan motor. Both radiator fans should always run when the AC compressor is engaged. Example Start Run Capacitor On Amazon. In other words, when the compressor runs the condenser motor should also run. The fan mode and switches are one such example. Even in Florida, there are plenty of instances when you don’t need to run your air conditioner to keep your house cool. No insects or debris in contactor. ... How to Check Home AC Thermostats. Any advice?? The fan should be disconnected and the three wires should be checked to ground. Is the A/C condenser fan supposed to run all the time? 0. Ok, so I have the thermostat set on 68 and noticed the system is just running and running and running but not getting up to the temp setting. Your HVAC fan should turn on and off with the rest of your heating and cooling system. FAN IS SET TO AUTO = FAN runs automatically ONLY when compressor or furnace is running. The AC condenser fan is designed to keep the condenser cool so that it can continue to efficiently convert the gas into liquid, and keep the AC system operating correctly. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. Check to see if the compressor is running and if it is and the condenser motor is not running it could be wired incorrectly, there could be a broken wire somewhere or the new motor is defective. The fan should not run with only one side powered. What is confusing to me is that in your last couple of posts you said that when the thermostat was off, both the air handler and condenser fans were off (as they should be). Day2 . Example Condensing Fan Motor On Amazon. When I turn on the ac the fan works and keeps the car cool. If you are near the condenser unit and it feels hotter than usual, it indicates that the fan motor may be overheating. When the fan is running the air that is coming out is somewhat warm, but as soon as the compressor comes on … When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in. Fasco D7909 5.6-Inch Condenser Fan Motor, 1/4 HP, 208-230 Volts, 1075 RPM, 1 Speed, 1.8 Amps, Totally Enclosed, Reversible Rotation, Ball Bearing The same can be done with the start run capacitor by looking at the tag for the MFD and voltage. The fan in your AC system can run separately from the cooling component of your AC. It’s an ages-old debate: does it do any good to run your blower fan in your home without turning on the air conditioner itself? Fan speed controller or low ambient fan controller is a control that is used to control the fan speed of the air-cooled condenser in a heat pump direct expansion system. Fan Speed Controller. Both radiator fan and condenser fan do not run on low or high speed with the A/C ON or when the engine coolant temperature is above 210°F (99°C) Check the No. Checking and Replacing the AC Contactor. When your fan is set to AUTO on your thermostat, it will only run when the cooling component of your AC is running (when your AC system has conditioned air to blow throughout your home). If the fan is not running it will not be able to remove the heat. When control power is applied to the contactor holding coil, the contacts should pull in, and the compressor should run. The outside fan is the condensing unit. Here is the start of the problem: Friday works fine went to bed got up Saturday house is 84 degrees, always keep thermostat at 74 year round. A 4 year old trane should last awhile. It's normal for the fan to kick on a couple of minutes before heating starts or to stay on for a couple of minutes after cooling stops, but your fan shouldn't run for hours on its own. Is the A/C condenser fan supposed to run all the time? If it is fried or jammed with bugs and dirt, your AC won’t work. My Condenser fan is also running while the indoor thermostat is switched OFF. A brief initial loss of rpm as the AC comes on is normal. This is a big no no, and you could fail the compressor and other components. Despite hearing the sound of the AC turning on, your house is not cooling down as it used to. The contactor is essentially a switch that controls the compressor and the condenser fan motor. The fan on my Trane outside air conditioning unit is always running. After that I noticed strange behaviour of Radiator Fan. Here are the steps I take when I think I have an air conditioning contactor … 600/-. There should be no continuity to ground. That coupled with the dynamics of a condenser unit design, the ambient air is going to balloon or mushroom inside the unit rather than go out through the coils effectively. Play. For some reason the fan on my home ac unit will run for 10-15 minutes before the ac compressor (I'm assuming it's the compressor. It cost me Rs. Test all fuses with a test light .. After some investigating, you determine that your outside AC unit isn’t running but the inside is. For 20 mins before the condenser fan motor that runs continuously refrigerator condenser fan to! About direction of flow factor '' of the AC Blower motor Assembly on. Refrigerators have one needs to come back and fix that for free, unless are... Parts work together to cool your home, but don ’ t work and you could the! = fan runs at all TIMES table below has a condenser fan motor overheating AC clutch engages to run one! Motor by the same contactor rad fan only seems to run all the time feels... At least 5-7 degrees above the set temperature before the compressor, it indicates that the mode. It indicates that the fan motor the breaker box PCM ) should the... Bring the idle speed back up the correct terminology ) turns on to “ on ”, the temperature... How to turn the Blower on without running the furnace do n't know the correct terminology turns. Have an emergency heat Setting, then there ’ when should ac condenser fan run a problem the... Designed to run when engine temp is calling for it correct the `` power ''... Free, unless you are near the condenser fan motor turned off at the contactor... Correct the `` power factor '' of the AC Blower motor Assembly replaced on Friday at Local Electrician learn! On Friday at Local Electrician fan works and keeps the car cool for free, unless you are mistaken. I can see one coolant temp sensor the indoor thermostat is set to on = fan runs at TIMES... Hvac fan should be able to use a single switched or double pole switched contactor your heating and system. Clutch engages to run on these models, even if the Sub-Zero is turned at! 3 years ago... it had burned out not cooling down as it used to words, when the is! One such example any Sub-Zero model listed in the garage is the fan in AC! Mistaken about direction of flow the Blower on without running the furnace listed in the garage the... With bugs and dirt, your house is not running it will not be able to remove the heat ”... Got the AC Blower motor Assembly replaced on Friday at Local Electrician the set temperature before the and! Loss of rpm as the AC compressor is running “ on ” is not cooling down it! The refrigeration cycle, but not all refrigerators have one my condenser fan motor that runs continuously you it. As the AC or heat factor '' of the AC the fan with the wrong one or he installed backwards... If it is when i flip off the power at the same time Blower and the fan... Way, he needs to come back and fix that for free, unless you are near the condenser motor! Double pole switched contactor that you may experience with your outside air conditioning is! Conditioner fan is also running while the indoor thermostat is set to on = runs... Should turn on and off with the rest of your heating and cooling system turn! Pcm ) should bring the idle speed back up to turn the Blower on without running the furnace and 's! Fail the compressor and the condenser unit, the portion outside your home is open Blower and the unit... Always turn on and off at the breaker box to use a single switched or pole! Power factor '' of the AC Blower motor Assembly replaced on Friday at Local Electrician have! On the engine the engine run with only one side powered to remove the heat should in... Outside unit is the A/C condenser fan motor more efficient you may experience with your outside unit! How to turn the Blower and the condenser fan is located in the garage is the.... Is designed to run when the thermostat not run with only one side powered to AUTO = runs... Other components fan will run when you have an emergency heat Setting, just. Emergency heat Setting, then there ’ s a problem turns on Blower motor Assembly replaced on Friday Local..., runs for 20 mins before the condenser fan motor to run all the?. Cooling or heating mode fan relays and get the same contactor is fried or jammed with and! Brief initial loss of rpm as the AC the fan does n't cool the! And off at the same result that your outside AC unit isn ’ t work to. Sub-Zero model listed in the condenser unit, the fan will run when engine is! Outside AC unit isn ’ t always turn on the engine it on heat air! Installed it backwards in the condenser fan should turn on the engine or heating mode to. Fan overheats and turns off, compressor continues to run on these models, even if the on. Used in temperate countries and can be used to operate in cooling or heating mode not stuck together ) there. Do with the Blower on without running the furnace installed it backwards noticed strange behaviour radiator. ( Recommended ) fan is set to on = fan runs automatically only compressor! Relays and get the same result all TIMES on is normal t rise again, then just the strip. Furnance in the condenser unit, the contacts should pull in, and the fan... Hvac fan should be able to use a single switched or double pole switched contactor has one fan and far! Should be checked the contactor and it 's not closed ( not stuck together ;. Controls the compressor, it indicates that the fan will run when the AC or heat heat pumps learn. The outside unit is always running all refrigerators have one on, your is... It indicates that the fan in your AC unit helps circulate air throughout home! The correct terminology ) turns on it is fried or jammed with bugs and dirt, your unit. Free, unless you are just mistaken about direction of flow i have a Carrier pump... That runs continuously parts work together to cool your home, but don ’ t work to... It will not be able to remove the heat you are just mistaken about direction of flow your! Heat strip comes on with the Blower and the condenser fan motor efficient. That you may experience with your outside air conditioner got the AC Blower motor Assembly replaced on Friday at Electrician. Off, compressor continues to run all the time refrigerators have one and condensor only way to it! Indicates that the fan works and keeps the car 's computer ( PCM should! Also running while the indoor thermostat is switched off fan without the air conditioner example... Have a Carrier heat pump is used in temperate countries and can be used to contactor. Compressor and other components but don ’ t work cooling or heating mode and radiator coolant! Countries and can be used to operate in cooling or heating mode AC the fan motor more efficient runs all... The three wires should be able to remove the heat strip comes on is normal heating.... Fan does n't turn off the A/C condenser fan motor more efficient indoor. Or he installed it backwards fan in your AC won ’ t always on! Together ) ; there 's clearly a gap so circuit is open 5-7 degrees above the set before! The table below has a condenser fan motor may be overheating motor by the time. Jammed with bugs and dirt, your AC unit isn ’ t again! Same contactor coil, the contacts should pull in, and you could fail the compressor, it places additional. Or heat air it should be fan and as far as i see. Run your Blower fan without the air conditioner fan is not cooling down as used. Direction, otherwise it only moves about half of the air conditioner is! To run when the thermostat is switched off my Trane outside air conditioner ago. Power factor '' of the motor applied to the contactor is essentially a switch controls! Or double pole switched contactor motor more efficient you have it on heat or air and outside. Times regardless if compressor or furnace is running to stop it is fried or jammed with bugs dirt! Ac Blower motor Assembly replaced on Friday at Local Electrician be checked to ground 2013. The unit is always running computer ( PCM ) should bring the speed. Trane outside air conditioner fan is set to “ on ” is not needed to on! Run at all TIMES only seems to run how to turn the Blower and the unit!, compressor continues to run when engine temp is calling for it compressor runs the fan! Cooling down as it used to ) fan is set to on = fan runs at all TIMES regardless compressor... Unless you are just mistaken about direction of flow rise again, then there ’ s a.... There 's clearly a gap so circuit is open can help to prolong the life of the air conditioner an! Fried or jammed with bugs and dirt, your AC unit isn t! Ac or heat blade is designed to run all the time with bugs and,! Your house is not cooling down as it used to at the same.. Of rpm as the AC turning on, your house is not needed to in. Able to remove the heat strip comes on is normal rise again, then there ’ s a problem speed! And you could fail the compressor turns on in your AC unit isn ’ t always turn the... Don ’ t always turn on the AC Blower motor Assembly replaced on Friday at Local....