Your thermostat’s fan setting controls the fan in your AC’s inside unit (called the air handler). This one is also a part of the clutch’s electrical system. The clutch is electrically powered via a relay. When there is debris blocking the outside of your AC unit, your AC will struggle to cool your home’s air efficiently. firstly check if you have a good system pressure – if the pressure is too low you need to add refrigerator in the system; secondly you can do a visual inspection of all the pipes/hoses/interconnections of the AC system. While the system is in cooling mode, the frost that had built up on your outdoor coil then turns to water, runs down the outdoor coil, and piles towards the bottom. It’s the one that’s pumping the gas that is going to turn into liquid. Clogged Air-filter. How To Tell If Oil Pressure Sensor Is Bad. Your air conditioner has 2 components: the indoor air handler, and the outdoor condenser unit. So you decided to go back inside, but you still feel warm. The wrong size air conditioner, especially one that produces too many BTUs, may cool the air but be unable to eliminate the humidity from the air. If you live in Arizona, the last question you want to ask yourself during the summer is, “Why is my air conditioner blowing warm/hot air?”. In conclusion, it means that is a very important part of the whole system. Now open up the outside unit where the electrical controls. If a duct … Possibility #2: Reasons your heat pump is actually blowing cold air. Leaks along the flow path can cause low levels, which are difficult to identify because the refrigerant is transforming in gas when outside the system. Air Filter Is Dirty. If your furnace is blowing cold air, or is not operating at all, a component called the fan limit switch may have malfunctioned. What Are The Symptoms Of A Bad Crankshaft Position Sensor? As the air blows through it, it passes over the supercooled coils inside to cool down.The process will transfer the heat out of the air and into the supercooled coils. … It could simply be a faulty unit. Poorly working fan also means that the liquid temperature is not at the aimed value, thus creating a warm air inside. Dirty evaporator coil caused by a dirty air filter. The result will be an air inside the cabin beyond expectations. For this reason, it uses good connections, and proper quality wires. In other words, that is the role of the condenser in the system. Discern a duct malfunction. So no compressor = no refrigerant. “Car ac not blowing cold air when hot outside” or “car ac not cold enough”: This happens due to two reasons. If the fan is blowing, but the air seems warm or just not cool, check to see if your thermostat is set to “on” or “auto”. I checked out the outside unit and made the following observations: 1. In effect you can say that if something is wrong in this assembly, the clutch will not engage and thus the compressor will not function. TheCarsGuide.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Hi, Thanks in advance for any information that you can provide. The reason the fan shuts off during this process is so the system doesn't pull the cold air from the outside across the coil while the hot refrigerant circulates. If your unit is not blowing any cold air, the sensor may have been knocked out of its position. It’s up to you how you maintain the system and how much care you have! Your email address will not be published. A dirty air filter clogged with dirt can decrease the efficiency of your Air … The Room Air Cycle. Check the exhaust hose and remove any obstructions inside the hose, and keep the hose unbent. 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