It may seem logical to think that a fan for an air conditioner is the same as a fan … The outside fan is the condensing unit. Your HVAC fan should turn on and off with the rest of your heating and cooling system. The fan in your AC system can run separately from the cooling component of your AC. When control power is applied to the contactor holding coil, the contacts should pull in, and the compressor should run. Any Sub-Zero model listed in the table below has a condenser fan motor that runs continuously. If the fan is not running it will not be able to remove the heat. Day2 . A brief initial loss of rpm as the AC comes on is normal. There should be no continuity to ground. ... How to Check Home AC Thermostats. 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. July 05, 2015. These two parts work together to cool your home, but don’t always turn on and off at the same time. 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? You should be able to use a single switched or double pole switched contactor. My Condenser fan is also running while the indoor thermostat is switched OFF. When I turn on the ac the fan works and keeps the car cool. Condenser fan motors all have a temperature stipulated by the AC manufacturer at which it can operate safely and problem-free. 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. Should You Run Your Blower Fan without the Air Conditioner? Typically, this means one of two things: your outside AC hums but the fan doesn’t spin or the entire outside AC … Checked the contactor and it's not closed (not stuck together); there's clearly a gap so circuit is open. pushrod on . After that I noticed strange behaviour of Radiator Fan. The house will warm up at least 5-7 degrees above the set temperature before the compressor turns on. In most cases, the ideal temperature is around 150 degrees Fahrenheit. The fan on my Trane outside air conditioning unit is always running. How to Turn the Blower on Without Running the Furnace. Checking and Replacing the AC Contactor. The furnance in the garage is the blower and the outside unit is the fan and condensor. However, some homeowners wonder if they should (or could) still run their blower fan when their AC isn’t in operation. But the car's computer (PCM) should bring the idle speed back up. If you are near the condenser unit and it feels hotter than usual, it indicates that the fan motor may be overheating. Sometimes power is supplied to both the compressor and the condenser fan motor by the same contactor. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. 0. 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). The contactor is essentially a switch that controls the compressor and the condenser fan motor. When the thermostat is set to “ON”, the FAN will run at all times. either way, he needs to come back and fix that for free, unless you are just mistaken about direction of flow. Maintaining the condenser fan motor can help to prolong the life of the AC compressor. When the fan is running the air that is coming out is somewhat warm, but as soon as the compressor comes on … The house stays nice and cool but the fan doesn't turn off even when I turn off the a/c. if the fans run in reverse, then it would be sucking where it should be blowing. If the AC doesn’t run or hum but you hear it clicking, the contactor probably needs to … I changed the low speed fan and high speed fan relays and get the same result. When the AC clutch engages to run the compressor, it places an additional load on the engine. Sign in to reply. Test all fuses with a test light .. The run capacitor helps correct the "power factor" of the motor. 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. 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. The fan pulls air in through the condenser. Condenser fans draw outside air into the condenser. It cost me Rs. The fan in your AC unit helps circulate air throughout your home. 4500/- + Labour Rs. 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. 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. One problem that you may experience with your outside air conditioner is when the fan does not come on. The fan should not run with only one side powered. It helps make the condenser fan motor more efficient. Play. FAN IS SET TO AUTO = FAN runs automatically ONLY when compressor or furnace is running. If it is fried or jammed with bugs and dirt, your AC won’t work. It’s easy to understand what an air conditioner is supposed to do, but sometimes knowing what each function does can get complicated. 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. 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. I have a Carrier heat pump which in which the outdoor fan was replaced just over 3 years ago...it had burned out. 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. Close. Heat pump is used in temperate countries and can be used to operate in cooling or heating mode. Is used in temperate countries and can be used to operate in cooling or heating mode double pole contactor. 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