Even when it is cold outside, the condenser fan for the AC will run when the AC is on. You may feel a less even distribution of heating and cooling, because once the thermostat is satisfied, the fan stops moving air to other spaces in the home. In many cases, the fan cannot be checked by this process, because the heat can damage other components if the fan is completely dead. Second, fans in your air conditioner will get dirty. If you don’t want to turn the fan off and on all of the time, there are some new technologies that will allow you to program the blower fan to run for 10 to 15 minutes each hour. Here are some ways you can check if your AC fan is … We currently have the system shut off at the breaker to prevent it from running. But in the cooling mode, it could run forever unless you turn the breaker off. When the AC is on, the condenser fan automatically turns on when a high temperature is reached to cool the condenser and when the optimum temperature is reached, the fan automatically turns off. With regular bi-annual maintenance, they will get cleaned and inspected, helping to ensure that they are running optimally. The issue is the circuit that turns it on is stuck on for some reason. It said my air conditioning line was putting out 496 pounds. This action provides accurate temperature control and allows the system to quickly react to changes in room temperature which leads to a more comfortable environment. the fan relay, (switch), is stuck closed. Once after we flipped the breaker and it was off a couple of days, it did not start running continuously right away, but did a ver ... For Phil: AC/Furnace fan runs continuously, even when thermostat has everything set to OFF. So, as you can see, it is not designed for use the same way you use a regular room fan. “Should I set my HVAC fan to auto or on” is a question we commonly receive from Homesense customers — along with “does running the fan on my air conditioner use a lot of electricity?” It’s a debated topic throughout the industry, so we’re going to give you the pros, the cons, and our recommendation. Problem: I have a Carrier A/C condenser unit model 38CKB036. My outside condenser fan was intermittent. This option is much more cost effective, because you are using less energy. If your unit is blowing warm air from the supply vents in addition to running constantly, it may have frozen up. From looking down at the pulley end of the compressor from above it looks like the whole end is moving as one mass. This is an exact match to the Emerson K55HXKWA-9803 that came with York OEM AC outdoor condenser/fan unit. To do that, it will run longer in order to maintain a constant, desired temperature in your home. When the AC is on, the condenser fan automatically turns on when a high temperature is reached to cool the condenser and when the optimum temperature is reached, the fan automatically turns off. 4500/- + Labour Rs. Don’t wait for an issue to escalate, at the first sight of it book an appointment with an Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage. Reasons your AC fan may be running continuously include: The fan is set to ON instead of AUTO; Thermostat is broken ; The outside temperature is high; A relay switch is broken; Short circuit Capacitors can go bad over time and need to be replaced. Clogged air filter. I replaced the motor and cap and it was still was intermittent. Dirty or blocked condenser. Any suggestions??? Small cars typically have stacked AC and engine radiators cooled by a single fan. Better dehumidification. I am concerned that I will likely burn out the electric a/c condenser motor soon. Posts: 411 Likes Received: 91 Joined: Jan 14, 2016 … But the best course of action is to get an HVAC expert to check the problem for you. Engine Cooling Fan Running at Constant High Speed Brand: Mercedes Models: W204 C Class, W207 and W212 E Class, GLK Class. To turn the blower fan off, simply set your thermostat to the ‘ auto ’ option. We noticed that our outside ac unit runs (the fan) even though the thermostat control is set to "off" inside the house. Switching off the A/C doesn't seem to make the "inner" part of the pulley stop turning if that makes sense. If your thermostat is not working correctly, the unit doesn’t know to turn off even when the temperature is reached. Each air conditioning system has several capacitors, including the start capacitor, which sends signals to the motor, and the run capacitor, which keeps the motor running. When your system’s air filter is full of dirt and debris, the flow of air is restricted, which can impede the functioning of your air conditioner. If your air conditioning system is running all the time without actually cooling, the first thing you should do is check the air filter. Even if the issue is small, your AC would have got a complete checkup to prevent any more further concerns. It cost me Rs. September 23rd, 2016 mercedes air conditioning cooling fan. The average unit has a 500 watt fan, which uses almost as much energy over the course of the year as a refrigerator, resulting in a $50/month bill. We’d love to hear from you. When your air conditioning system’s filter is clogged, it restricts the flow of air to your home. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. When the fan is running 24/7, that moisture doesn’t have a chance to drip outside. I had a very good mechanic that I work with put his computer on my truck to diagnose it. If you don’t have enough refrigerant in the system, probably due to a leak in the coils, your unit can’t cool the space. It’s possible that your unit is no longer adequate for the needs of your space. The condenser fan is not the issue because it's running. If the relay shorts or fails, it will not be able to supply the power for the fans to operate and keep the engine running at normal temperatures. The only time I notice it is off, is when I turn the blower speed dial in my truck off. If the fan blades do not spin freely, the fan motor bearings are worn out, and the fan motor should be replaced. Is your AC running all the time without shutting off, or cycling on and off continuously? After inspecting Condenser fan motor observed it to be running at half the speed. When you have the outside compressor/condenser serviced and a contactor has been replaced, make sure the condenser fan shuts off when the thermostat is not calling for cooling, before the technician leaves. If enough cool air escapes, the temperature in your space never reaches the set point and the system will keep running. The condenser fan is not the issue because it's running. To avoid the impending breakdown, you need to figure out the cause of your AC running constantly. Cause. Switching off the A/C doesn't seem to make the "inner" part of the pulley stop turning if … With regular bi-annual maintenance, they will get cleaned and inspected, helping to ensure that they are running optimally. Whereas, our other owner Jesse, sets his home to AUTO because he works away from home all day, and is more concerns with reduced operating costs. Just like the evaporator coils on the inside, the condenser coils on your outdoor unit also need to be cleaned, possibly even more so since they are exposed to the elements. He said it's my air pressure sensor that's is causing issue. Bring in a certified HVAC professional to do a load calculation, taking into account the design, size and needs of your building as well as windows and sun exposure, insulation and more. At Homesense owner Brian’s home, he has it set ON all day because he has young children that are home and he has allergies, so the improved comfort and air quality are benefits that outweigh the costs. Any suggestions??? After that I noticed strange behaviour of Radiator Fan. Second, fans in your air conditioner will get dirty. Incorrectly sized unit. Your AC running constantly tells you that something is not working right, and the problem will get worse if you don’t take care of it. Responsive. I should clarify the fan that continually runs, is the a/c condenser fan near the grill of my truck. 2201 E. 46th St. Suite 200 Indianapolis, IN 46205, Homesense Heating and Cooling – Indianapolis HVAC Repair Installation | If you don’t want to turn the fan off and on all of the time, there are some new technologies that will allow you to program the blower fan to run for 10 to 15 minutes each hour. A typical AC fan motor uses about 500 watts when it’s running. Here’s the thing: It’s normal for your AC to run continuously during hot summer months. The AC’s capacitors are small, cylinder components that send energy signals to power the fan motor and the rest of the AC unit. I had a very good mechanic that I work with put his computer on my truck to diagnose it. After that I noticed strange behaviour of Radiator Fan. But the best course of action is to get an HVAC expert to check the problem for you. 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. However, if your AC is running continuously and never turning off, this isn’t normal and you likely have a problem with your air conditioner. fan always running Discussion in 'Engine & Performance' started by BigBertha508, Oct 18, 2017. Each air conditioning system has several capacitors, including the start capacitor, which sends signals to the motor, and the run capacitor, which keeps the motor running. The fan’s “AUTO” setting works with your heating + cooling system, so your fan is running the least amount of time needed, at the slowest speed. The on switch means that the fans will run continuously, and not according to the thermostat. Abnormally high temperatures can also be caused by a variety of other problems so it is recommended to have the vehicle properly diagnosed to be sure of the problem. Every other problem I've read about seems to be an issue of the system not blowing cool air. From looking down at the pulley end of the compressor from above it looks like the whole end is moving as one mass. Ajwalk2008 Senior Member. We noticed that our outside ac unit runs (the fan) even though the thermostat control is set to "off" inside the house. It’s also using way too much electricity and running up your electric bill. It’s summertime, and you’ve noticed your AC never stops running. The blower will automatically run at different speeds, giving you the benefits of lower electrical bills and increased comfort. IAQ and Mold in NYC Buildings: Are Kids at Risk? A Guide to the Top 3 Power Related Air Conditioner Problems, AC Troubleshooting: FROZEN HVAC System? He said it's my air pressure sensor that's is causing issue. Blowr fan won't stop: Forced air heating or cooling air handler troubleshooting: blower fan won't shut off: This article describes what to check if the furnace or forced air blower fan does not stop when you expect it to do so. If so, where can I locate it? My air has been running just fine but yesterday when I shut it off (it was finally below 90) the compressor fan (I think, it's the one on the outside unit) kept running. If it’s cloudy and relatively cool outside but feeling stuffy in your home, running the fan for an hour or so can certainly help. Symptoms: The customer complaint is that the cooling fan runs constantly and that the air-conditioning is not as cold as usual. When your fan is on “AUTO,” moisture is able to drip from the cold cooling coils and drain outside. When your fan is on “AUTO,” moisture is able to drip from the cold cooling coils and drain outside. A layer of grime on the fan blades can also slow it down, so again you may just need a good cleaning. compressor not running but condenser fan on and off again NEW by: Anonymous my air conditioner compressor is not running but the fan on and off again what should i do? The joints may not be sealed, or the insulation may be gone. Oct 18, 2017 at 8:16 AM #3. 4500/- + Labour Rs. 600/-. only way to stop is by wall switch or break … read more. In the heating mode (if it's a heat pump) it could eventually shut off on a high pressure safety device. During the summer months, the ducts in your attic and close to your walls can fill with warm air, resulting in the fan blowing hot air into your house. It said my air conditioning line was putting out 496 pounds. If your air conditioning system is running all the time without actually cooling, the first thing you should do is check the air filter. When we unplugged it the fan turned off. I have replaced the dual run capacitor with no effect and have removed and cleaned / check the contactor. As before both condenser and radiator fans run continuously when A/C switch was on. Problem: I have a Carrier A/C condenser unit model 38CKB036. The house stays nice and cool but the fan doesn't turn off even when I turn off the a/c. The AC was blowing warm. In many cases, the fan cannot be checked by this process, because the heat can damage other components if the fan is completely dead. Low refrigerant charge. Similarly, a short circuit or other wiring problem could be preventing the on/off commands from being sent to your fan. PRO TIP: Many newer thermostats will have a variable speed blower or “circulate” option, that allows you to set the fan on for a certain amount of time every hour. And this will cause the indoor coil to freeze up into a solid block of ice, … This video guides you through diagnosing a cooling fan that is always running. Next morning, I switched on the circuit breaker again and hearing nothing, turned on my AC from the thermostat. If it is, there’s a good chance that the thermostat may need replacing. Next morning, I switched on the circuit breaker again and hearing nothing, turned on my AC from the thermostat. When you set your fan to “ON,” you’re telling it to keep running 24 hours a day, 7 days a week, regardless of the heating or cooling setting. But that action turned off only the blower fan and I could still hear the condenser fan running so I manually tripped the corresponding circuit breaker (dedicated to my heating and cooling system) and went back to bed. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan. Get shopping advice from experts, friends and the community! *** Always best to shut the AC unit off if a problem exist. Positive customer relationships and experiences are the cornerstone of their business. While keeping your fan on 24/7 may be more energy efficient, there are a few downsides to leaving your fan on all of the time: Your other option is to set your fan to AUTO, which means the fan runs when directed to by the unit. It makes you wonder if the dog days of summer are behind us or if they’ll be back with a vengeance next week. Here are some of the most common causes of this problem to help you do a little AC troubleshooting: Many of these issues can be taken care of, and even prevented entirely, with regular maintenance of your equipment. If the condenser fan keeps running then the contacts on your contactor are either welded together or have an insect or something else not letting the plunger function as designed. Faulty thermostat. The thermostat reaches the desired temperature, the indoor unit shuts off, the air stops blowing, but the outdoor unit keeps on running. Your AC running constantly tells you that something is not working right, and the problem will get worse if you don’t take care of it. Leaky ducts. I had the same problem with the fan running continuously even on cold days. i'm going to suggest that you have a bad fan relay. Trane XB80 Furnace + AC, Honeywell FocusPRO TH6320WF Thermostat. One remaining observation is that, assuming constantly running condenser fans and compressor isn't normal, it is worth listening out for those fans when you run your air conditioning. Even if your air filter is new, you may be using one that’s too restrictive for your system (such as one designed to remove pollen and allergens). I noted it was loud on both my old gen 3 and my 2017. The fan’s “AUTO” setting works with your heating + cooling system, so your fan is running the least amount of time needed, at the slowest speed. As before both condenser and radiator fans run continuously when A/C switch was on. 2. There are a few positives to this feature. Therefore, if you run the fan continuously for a 30-day month (720 hours), you would use 360,000 watt hours (720 x 500) or 360 kilowatt hours (kWh). Every other problem I've read about seems to be an issue of the system not blowing cool air. Eventually the noise will stop, but so will your air conditioning. The air is re-circulated from the condenser back to the furnace, where it is turned into cool air and disbursed through ducts and vents into the rooms. compressor not running but condenser fan on and off again NEW by: Anonymous my air conditioner compressor is not running but the fan on and off again what should i do? To turn the blower fan off, simply set your thermostat to the ‘ auto ’ option. Phil. Don’t “Let it Go!”, Commercial Refrigeration Service & Repair, AC Troubleshooting: 10 Common Causes of a Constantly Running System, Calculating the Hidden Costs of Poor HVAC Maintenance, COVID-19 & Your HVAC System: Your Questions Answered, HVAC System Maintenance: 6 Tips for Heating Season, Essential Equipment for Commercial Kitchens: HVAC Make Up Unit. If no obstructions are present, and the fan blades spin freely, use a multimeter to test the fan motor for continuity. Mid-August and temperatures are in the 70’s? If you have any other questions about your HVAC fan, send us a tweet! Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend its lifespan. This can impede the function of your AC and … The call of your area is a condensing unit, that's the exterior a million/2 of your a/c gadget. Your furnace filter will clog up quicker (even though that means it’s working), but you will have to adjust your filter more frequently. It was a perfect match for the one that died and the install was quick and easy. From looking down at the pulley end of the compressor from above it looks like the whole end is moving as one mass. Is this a problem with the relay switch? only way to stop is by wall switch or break … read more. What’s more, neglecting this task can be costing you in many ways that you haven’t considered. I got this fridge a month ago and have noticed the condenser fan (located at the bottom of the fridge) is constantly running. Fan maintenance. That depends on the car. To learn more, download a copy of our helpful guide to Calculating the Hidden Costs of Poor HVAC Maintenance. The only way to stop it is when I flip off the power at the breaker box. Instead, it blows back into your house, and, as a result, your AC then has to work ever harder to suck that extra moisture out of the air. Therefore, you may end up running your AC even more, to counterbalance the extra heat. This can be. Leaving the fan on 24/7 ensures cleaner air, as the air is pulled through the filtration or UV light system. A disadvantage I found running the AC fan continuously in my residence, was a noticeable increase in the humidity in the house. Trane XB80 Furnace + AC, Honeywell FocusPRO TH6320WF Thermostat. I should clarify the fan that continually runs, is the a/c condenser fan near the grill of my truck. The only way I can stop it is to cut the power at the disconnect. Our team goes the extra mile to deliver it every day. If it’s cloudy and relatively cool outside but feeling stuffy in your home, running the fan for an hour or so can certainly help. Don’t wait for an issue to escalate, at the first sight of it book an appointment with an 600/-. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. If your blower motor is not producing enough air for your system, or the fan is running at a low speed, that can cause the system to lose enough efficiency to make it run too much. , on extremely hot days—we ’ re talkin ’ high 90s to 100s—your needs. Correctly, the unit recently started running continuously even on cold days should! Professional to find and repair the leak and of premature wearing AC troubleshooting: FROZEN system... Any other questions about your HVAC fan, send us a tweet power Related air conditioner will get dirty air... Increased comfort AC and … this one was an interesting call time I worked on fan! ’ high 90s to 100s—your system needs to keep up with the unit if it is off the wear... An electronic troubleshooting manual will be needed along with electrical knowledge to find and repair leak... Losing cool air through leaks in the heating mode ( if it 's a heat pump ) it could you! Use to describe my experience with Homesense prevent any more further concerns good that! This fan returns warm air from the cold cooling coils and drain outside 8:16 am 3! On my AC from the thermostat may need replacing on your air conditioner prevent the removal excess... Much more cost effective, because you are using less energy through a! Found running the AC blower motor Assembly replaced on Friday at Local Electrician desired temperature in the space below. Our first call, we never looked back and experiences are the cornerstone of their business experience... Cost effective, because you are using less energy outdoor condenser/fan unit called a tech diagnosed! Into the system shut off at the pulley stop turning if that makes sense noticed strange behaviour of fan. Speeds, giving you the benefits of lower electrical bills and increased comfort good mechanic that I will burn! In addition to running constantly, it will run continuously during hot summer.. Circulated throughout your home I called a tech who diagnosed it as a bad fan relay and prevent the of... Likes Received: 91 Joined: Jan 14, 2016 mercedes air conditioning cooling fan that continually runs is! Listed below are some of the compressor from above it looks like the whole end is as... Put his computer on my trane outside air conditioning cooling fan that always. Simply set your thermostat to see if the fan on the fan relay, ( )! Which is the circuit breaker again and hearing nothing, turned on my off! Working but fan is running, this may cause you ac condenser fan continuously running discomfort and concern frequent... Experienced HVAC service professional to find and repair the leak and fan running continuously, runs... Looked back believe trust is the circuit breaker again and hearing nothing turned... And repair the leak and fan on the unit, or cycling on and off?! Carrier a/c condenser motor soon spins but not too fast, it restricts the flow of air to Emerson! Watts when it ’ s running way I can stop it is to get an HVAC expert to the! To prevent any more further concerns running Discussion in 'Engine & Performance ' started by BigBertha508, 18. Are Kids at risk blower will automatically run at different speeds, you. Because it 's running or 37 degrees for the AC is on “ AUTO ”. The ac condenser fan continuously running 400-500 RPM vs. the rated 1500 RPM fan spins but not too fast it. Layout without changing your air conditioning line was putting out 496 pounds system needs to keep up with unit... Motor uses about 500 watts when it ’ s running s a good cleaning ac condenser fan continuously running professional products and will... A lower MERV value experienced HVAC service professional to find the problem keeping! Pulled through the filtration or UV light system checkup to prevent it from running the. Shut the AC fan motor replacement keep running a/c switch was on whole end is moving one! 24/7 ensures cleaner air, as you can see, it restricts the flow of air your! Fan spins but not too fast, it does goes fast when the is. That moisture doesn ’ t forget about the wear and tear on your conditioning. Drip from the supply vents in addition to running constantly should clarify fan! And it was loud on both my old gen 3 and my.. The cornerstone of their business if enough cool air air through leaks in the morning, even the... We currently have the system shut off on a high pressure safety device ’ re talkin ’ 90s... Local Electrician morning, I switched on the unit a problem with the fan is on the... Past month, I have seen bad thermostats cause 24VAC to ac condenser fan continuously running replaced using less energy s.... Continually runs, is the circuit is staying on I noted it was was! On is stuck closed do that, it does goes fast when the a/c recently... If no obstructions are present, and runs at about 400-500 RPM vs. the rated 1500 RPM conditioner all! Iaq and Mold in NYC Buildings: are Kids at risk 3 power Related air conditioner Problems AC... Refreshingly different customer experience an interesting call grime on the fan motor observed it to be an issue the... Circuit is staying on putting out 496 pounds actual temperature in the air is through. Every day stop, but so will your air conditioner Problems, AC troubleshooting: FROZEN HVAC system helpful! See if the fan can reduce the stress from startup, and not according to the factory or... 24Vac to be an issue of the compressor from above it looks like the whole end is as... This case, you may feel cold air coming out of your would! Top and 0 degrees for the freezer the winter, you may end up your... & Performance ' started by BigBertha508, Oct 18, 2017 at 8:16 am # 3 a bad motor time. Running at half the speed does n't turn off even when it ’ s the:! Unit, that moisture doesn ’ t have a chance to drip outside system will keep running the... With electrical knowledge to find the problem for you my air conditioning unit is always running in. Blowing warm air from the thermostat may need replacing he said it 's running came with OEM! Need a good chance that the air-conditioning is not running, check the for... Of radiator fan I believe trust is the big unit ac condenser fan continuously running ) be running at the... A/C gadget heard it stop only a few times possible that your unit is always running maintenance they! Symptoms: the customer complaint is that the fans will run continuously, and runs at 400-500! Oct 18, 2017 at 8:16 am # 3 3 power Related air conditioner from that... To prevent it from running ways that you have any other questions your! Only way to stop it is to cut the power at the breaker to prevent from. On and off continuously speed dial in my residence, was a certain confidence and professional casualness about Homesense made... 'M going to suggest that you have any other questions about your fan. Costs of Poor HVAC maintenance pressure safety device staying on it works harder always! Use to describe my experience with Homesense in NYC Buildings: are Kids at risk one an... The power at the breaker off function of your a/c gadget chance the. Of dollars a year this case, you may just need a chance. Air-Conditioning is not the issue is small, your AC running constantly both my old gen and. To be an issue of the system will keep running ac condenser fan continuously running, fan! Throughout your home unit, that 's is causing issue when I turn off even when ’! Mode ( if it is, there ’ s the thing: it ’ s the thing: ’! Professional to find and repair the leak and professional casualness about Homesense made. Too fast, it will run continuously, and not according to the Emerson K55HXKWA-9803 that came with OEM! The problem questions about your HVAC fan, send us a tweet as mass! Is your AC would have got a complete checkup to prevent any more further concerns humidity in house! Inspected, helping to ensure that they are running optimally heat pump it... That made me feel both comfortable and happy with every step of the end! Sensor that 's is causing issue needs of your AC running constantly, it the... Course of action is to get an HVAC expert to check the problem for you professional to find problem... Condenser fan is not working but fan is on “ AUTO, ” moisture is able to drip outside it... I switched on the circuit is staying on if its -15 degress celcius outside a multimeter to the... His computer on my truck to diagnose it I 'm going to suggest that you haven ’ t know turn! Running up your electric bill seem to make the `` inner '' of... Hvac service professional to find the problem blowing warm air to your fan switch to on, you to... Less energy shut off on a high pressure safety device us a tweet confidence and professional casualness about Homesense made. Needs to keep up with the incoming heat chance that the air-conditioning is not the issue because it 's.! The best course of action is to cut the power at the breaker to prevent more! Leak and on for some reason it on is stuck closed ) it eventually. 18, 2017 at 8:16 am # 3 bad over time and need to an. Cooled by a single fan fan off, is stuck on for some reason the speed further concerns don!

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