Even in Florida, there are plenty of instances when you don’t need to run your air conditioner to keep your house cool. The furnance in the garage is the blower and the outside unit is the fan and condensor. You should be able to use a single switched or double pole switched contactor. It helps make the condenser fan motor more efficient. When the fan is running the air that is coming out is somewhat warm, but as soon as the compressor comes on … The house will warm up at least 5-7 degrees above the set temperature before the compressor turns on. if the fans run in reverse, then it would be sucking where it should be blowing. My Condenser fan is also running while the indoor thermostat is switched OFF. You can google heat pumps and learn how they work. The only way to stop it is when I flip off the power at the breaker box. If you lose over 200 rpm and idle speed doesn’t rise again, then there’s a problem. Example Condensing Fan Motor On Amazon. Any advice?? Test all fuses with a test light .. If the AC doesn’t run or hum but you hear it clicking, the contactor probably needs to … Sometimes power is supplied to both the compressor and the condenser fan motor by the same contactor. This is a big no no, and you could fail the compressor and other components. The contactor is essentially a switch that controls the compressor and the condenser fan motor. Should You Run Your Blower Fan without the Air Conditioner? (Not Recommended) Setting the FAN to “ON” is not needed to run the AC or HEAT. either he changed the fan with the wrong one or he installed it backwards. A fan blade is designed to run in one direction, otherwise it only moves about half of the air it should be. pushrod on . The refrigerator condenser fan plays an essential role in the refrigeration cycle, but not all refrigerators have one. Refrigerator Condenser Fan Motor Troubleshooting. The fan in your AC unit helps circulate air throughout your home. 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. Is the A/C condenser fan supposed to run all the time? When I turn on the ac the fan works and keeps the car cool. Heat pump is used in temperate countries and can be used to operate in cooling or heating mode. When the AC clutch engages to run the compressor, it places an additional load on the engine. If you are near the condenser unit and it feels hotter than usual, it indicates that the fan motor may be overheating. 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. 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. The unit is calling for cooling, runs for 20 mins before the condenser fan overheats and turns off, compressor continues to run. Sign in to reply. In most cases, the ideal temperature is around 150 degrees Fahrenheit. It cost me Rs. 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). No insects or debris in contactor. Close. The fan pulls air in through the condenser. When control power is applied to the contactor holding coil, the contacts should pull in, and the compressor should run. 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. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. There should be no continuity to ground. The house stays nice and cool but the fan doesn't turn off even when I turn off the a/c. Both radiator fans should always run when the AC compressor is engaged. 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. In other words, when the compressor runs the condenser motor should also run. I changed the low speed fan and high speed fan relays and get the same result. FAN IS SET TO AUTO = FAN runs automatically ONLY when compressor or furnace is running. It is possible for the condenser fan motor to run on these models, even if the Sub-Zero is turned off at the thermostat. Hi all, I live in CT, which is a chilly 26 degrees tonight. When the AC is switched ON (Compressor), the Radiator Fan also switches ON (even though the Engine Temperature is at C) along with Condenser Fan. 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? When the a/c is off the fan … You have a heat pump. But the car's computer (PCM) should bring the idle speed back up. 4500/- + Labour Rs. It will run when you have it on heat or air. July 05, 2015. Thermostat has nothing to do with the condenser fan motor overheating. I replaced water pump and radiator and coolant temp sensor. The fan in your AC system can run separately from the cooling component of your AC. "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). Is the A/C condenser fan supposed to run all the time? 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. 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. These two parts work together to cool your home, but don’t always turn on and off at the same time. The outside fan is the condensing unit. 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. I don't know the correct terminology) turns on. A brief initial loss of rpm as the AC comes on is normal. If it is fried or jammed with bugs and dirt, your AC won’t work. (Recommended) FAN IS SET TO ON = FAN runs AT ALL TIMES regardless if compressor or furnace is running. I got the AC Blower Motor Assembly replaced on Friday at Local Electrician. One problem that you may experience with your outside air conditioner is when the fan does not come on. 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. Day2 . 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. The fan on my Trane outside air conditioning unit is always running. either way, he needs to come back and fix that for free, unless you are just mistaken about direction of flow. 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. 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. After that I noticed strange behaviour of Radiator Fan. 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. Checking and Replacing the AC Contactor. If you have an emergency heat setting, then just the heat strip comes on with the blower. 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. Typically, this means one of two things: your outside AC hums but the fan doesn’t spin or the entire outside AC … Example Start Run Capacitor On Amazon. It’s easy to understand what an air conditioner is supposed to do, but sometimes knowing what each function does can get complicated. A 4 year old trane should last awhile. 600/-. Posted by 2 months ago. 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. 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. How to Turn the Blower on Without Running the Furnace. However, some homeowners wonder if they should (or could) still run their blower fan when their AC isn’t in operation. Any Sub-Zero model listed in the table below has a condenser fan motor that runs continuously. Here are the steps I take when I think I have an air conditioning contactor … The condenser fan should run whenever the compressor is running. Sitting still it doesn't cool and the rad fan only seems to run when engine temp is calling for it. The fan mode and switches are one such example. However, this is not what your original post said- that the outside (condenser) fan runs continually, even when the thermostat is off. It may seem logical to think that a fan for an air conditioner is the same as a fan … Shut the system off. The air conditioner fan is located in the condenser unit, the portion outside your home. When the thermostat is set to “ON”, the FAN will run at all times. Both radiator fans should always run when the coolant temperature sensor in … The fan should be disconnected and the three wires should be checked to ground. Condenser fan motors all have a temperature stipulated by the AC manufacturer at which it can operate safely and problem-free. Despite hearing the sound of the AC turning on, your house is not cooling down as it used to. 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. After some investigating, you determine that your outside AC unit isn’t running but the inside is. I have a Carrier heat pump which in which the outdoor fan was replaced just over 3 years ago...it had burned out. The fan should not run with only one side powered. 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. If the fan is not running it will not be able to remove the heat. The run capacitor helps correct the "power factor" of the motor. Maintaining the condenser fan motor can help to prolong the life of the AC compressor. Checked the contactor and it's not closed (not stuck together); there's clearly a gap so circuit is open. ... How to Check Home AC Thermostats. Your HVAC fan should turn on and off with the rest of your heating and cooling system. 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