View solutions. In more extreme cases it can cause the system to shut down completely. Dirt, grass and other airborne debris can accumulate between the fins, clogging the coil. Change out HVAC filters every few months. Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips! However, this is not usually the case. AC Won’t Turn Off. If your system is undersized, it may be possible to provide cooling in problem areas by adding a ductless unit to help out in “hot spots”. Before replacing the compressor, first check all of the more commonly defective components. Checking and resolving issues involving refrigerant levels in your system is another job for your local Carrier dealer. It’ll be the hottest day of the summer, and no matter how many times you turn down the thermostat you still find the AC not blowing air that is cold enough. Cooler, more comfortable air is then circulated back to your home. As debris builds up on the coils, the air conditioner will become less efficient, causing the air conditioner to work harder to cool down. The coil includes a series of thin metal “fins” which are spaced very tightly together. Search Help by Model. If your air conditioner is running, but not lowering temperatures inside, one issue could be a blocked or clogged condenser coil. It’s no fun when your air conditioner is not cooling, but it can happen. Just because your central air conditioner was recently purchased and installed does not make it immune to immediate problems. The thermostat monitors the temperature of the air. Dirty air filter. Buildup on the... Clear the Air. If all else fails, call Carrier technical support. If the air filter is clogged, air cannot flow properly through the air conditioner. Carrier air conditioner troubleshooting tips can be found online if the machine isn't cooperating. To remove debris from the air filter, try cleaning the filter. If the coils are significantly dirty, the air conditioner will not be able to maintain the proper temperature, and the compressor will … Caring for and cleaning your HVAC unit will also decrease the likelihood of costly repairs and replacements. Need help finding your model number? With options for every home and every climate, we’re confident you'll find what you need. Email. Main control boards are often misdiagnosed; make sure to check more commonly defective parts first before replacing the main control board. If the compressor is defective, it should only be replaced by a licensed technician. If the compressor is not working, the central air conditioner won’t... cool. This greatly reduces the cooling capacity of the air conditioner. This is one reason why your aircon unit cannot work properly. How to Troubleshoot a Carrier Air Conditioner Unit Power Up. You might be able to determine the size of your AC unit from the rating info on the cabinet panel, but it will be difficult to determine whether it is the “right size” for your home. However, there are also times that you’ll need to make the call to your local Carrier® dealer for professional air conditioner service. And when it does, it’s not going to be in the dead of winter. If it’s been more than a couple of months since you’ve replaced the return-air … The most common cause of window air conditioners not blowing cold air is a lack of adequate air flow. From the company that invented modern air conditioning, Carrier split systems have patented features that can maximize your home comfort. Learn about our energy efficient innovations that can help you save on your heating & cooling energy expenses, while ensuring your home is comfortable. If your AC stays on longer than it should, you … The condenser coils dissipate the heat as the refrigerant passes through the coils. It flows through the system’s indoor and outdoor coil, changing from liquid to gaseous form, drawing heat energy and humidity from indoor air and releasing it outside. Air Conditioner Won’t Stop Running. On the other side, the fan blade directs the air … Carrier air conditioners provide climate control for homes, offices and public spaces with their broad range of appliances. A dirty coil can lead to reduced energy efficiency, lack of cool air from the registers, or in extreme cases, complete system shutdown or damage to the compressor from overuse. If not, move on to the next troubleshooting tip – checking the air filter. Before replacing the compressor, be sure to check more commonly defective components—particularly the overload protector and the compressor capacitor. Overall Efficiency

Efficiency within a model group will tend to vary by the size (capacity) of the unit. When your air filter is dirty, the amount of air that is able to blow over your evaporator … We carry more than 4 million parts from over 175 major brands, so chances are, we've got the part you need. Continuing to run your AC when it’s not properly cooling your home can take a minor issue and turn it into a major component failure or system replacement. Carrier selected R-32 refrigerant, which has a low global warming potential (GWP) of 675, for use in commercial scroll chiller ranges. From very simple issues like a thermostat set incorrectly or a dirty filter...to a more complex situation that requires replacing components...there are a wide variety of reasons why you may find your air conditioner running, but not lowering the temperature in the house. After the system kicks on, wait a few minutes, then check for cold air blowing from the registers. Your AC system may include an air filter located in or around the indoor air handler unit. We’ve all been there. When Willis Carrier invented the modern indoor air conditioner in 1902, he set out to change the world. Learn about our innovative products and how they can help improve your comfort. Sweating through a sleepless night...or slogging through the heat of a sweltering July afternoon. Depending upon its severity, a refrigerant leak can contribute to your AC system not blowing cold air, your system may run for longer periods of time without adequately cooling your home, or it can cause a damaged or failed compressor and complete system shutdown. Select an air conditioner equipped with technology that offers precise temperature balance and powerful performance. On one side, the fan blade draws in outside air over the condensing coil to dissipate the heat. If it’s cold, problem solved! Just because your system isn’t cooling, doesn’t automatically mean expensive AC repairs or replacing the entire system. (Note: Some thermostats may also control a heater and, as a result, will have three terminals. If you are not getting cold air when the thermostat is on and set to "cool" you may need to reset the compressor. In cooling operation, it operates just like an air conditioner system’s condenser unit and is subject to the same issues – dirty, clogged coil, frozen coil, refrigerant leaks, compressor malfunctions, etc. Warm indoor air passes through the evaporator coil where heat energy and humidity are removed from the air. If the indoor unit is a fan coil (typically as part of a heat pump system), the evaporator coil sits inside the fan coil cabinet. The control board regulates the voltage to the compressor and the fan motor. When operating correctly, the condenser fan draws air into the outdoor unit through the condenser coil to pull heat energy out of your home. Under moderate conditions, you may not notice any issues with an undersized air conditioner. This greatly reduces the cooling capacity of the air conditioner. Tell us about your home and preferences, and get a customized recommendation, Carrier contractors are ready to help you create your ideal home environment. Most Common Problems. If the main control board fails, some components will not function properly or will not work at all. If the thermostat is defective, the thermostat may not cool properly. Refrigerant is a chemical that is critical to the cooling process. Air Conditioners, HVAC Education, Maintenance, Troubleshooting, Air Conditioners, HVAC Education, Packaged Products, Indoor Air Quality, Frost forming on the copper refrigerant tubing coming from the coil cabinet, Excessive condensate drainage near your indoor unit, In extreme cases, frost forming on exterior refrigerant tubing or the outdoor unit. If your thermostat checks out and you still don’t have cool air, locate your system’s air filter, turn the system off, remove the filter and inspect. One of the main concerns about any air conditioner is its inability to cool. R-32 has a GWP that is two thirds less than the GWP of the current R-410A version and this change, combined with a significant system refrigerant charge reduction – up to 30% – allows for an exceptional 77% reduction in direct greenhouse gas emissions. Be sure it is set to cool. If it is off, set to heat, or set for constant fan (sometimes simply labeled “on”), switch it back to cooling operation. Learn how to choose and maintain your HVAC system. You may find your Carrier AC unit needs resetting if it starts to malfunction, or isn't responding to input via the control panel or remote. If the control board fails, some components will not function properly or will not work at all. In addition, if the air filter is clogged, the eva...porator coils will frost over. If the coils are significantly dirty, the air conditioner will not be able to maintain the proper temperature, and the compressor will run continuously in an attempt to cool the room. However, as temperatures rise outside, your AC may run for long periods of time and struggle to keep you cool. This is a little harder to diagnose, but could be costing you both … Defrost issues can be caused by faulty relays, controls, or sensors. There are a number of factors involved in sizing a system for your home, including square footage, quality of construction and insulation, local climate, and more. For a little more detail, visit our troubleshoot an air conditioner page. , we ’ re still sweating inside, call Carrier technical support overload protector and the compressor is,., then there are several possibilities that could explain why parts first replacing... And maintain your HVAC system can dramatically increase your electrical bill, while failing! 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