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Thread: Air Conditioner Not Cold Enough

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    Default Air Conditioner Not Cold Enough

    Originally posted 06-04-2015 9:14 PM

    Air Conditioner Not Cold Enough

    The 9 most common part(s) or condition(s) which cause the symptom Air conditioner not cold enough are listed below starting with the most likely.

    Air Filter

    If the air conditioner does not cool, the air filter might be clogged. If the air filter is clogged, air cannot flow through properly which greatly reduces the cooling capacity of the air conditioner. Either clean the air filter or replace it as needed.

    Condenser Coils are Dirty

    If the air conditioner is not cold enough the condenser coils may be dirty. The condenser is like a radiator and must stay clean in order to dissipate the heat which was removed from the air. As the coils get dirtier the air conditioner becomes less efficient, which makes it work harder to cool the room. If the coils are dirty enough, the unit will never be cold enough and will not be able to cool the room.

    Compressor


    If the air conditioner does not cool, the compressor might be defective. The compressor is a motor which compresses the refrigerant and circulates the refrigerant through the evaporator and condenser coils. There are several other components which are more likely to be defective if the compressor doesn't work. If the compressor itself is defective a licensed professional will need to replace it.

    Thermostat

    If the air conditioner does not cool the thermostat might be defective. The thermostat is a sensor which detects the room air temperature and a switch to provide power to the fan and compressor. If the thermostat is defective the air conditioner does not cool or may cool continuously.

    Thermistor

    If the air conditioner does not cool the thermistor might be defective. The thermistor is a sensor which detects the room air temperature. It is connected to the control board. If the thermistor is defective the air conditioner does not cool or may cool continuously.

    Control Board

    If the air conditioner does not cool the control board might be defective. The control board regulates the power supply to the compressor and fan motors. If the control board is defective some parts of the air conditioner might work properly. Control boards are often misdiagnosed, check other components first before replacing the board.

    Temperature Control Thermostat

    If the air conditioner does not cool enough the temperature control thermostat might be defective. The thermostat is a sensor which detects the room air temperature and a switch to provide power to the fan and compressor. If the thermostat is defective the air conditioner does not cool or may cool continuously.

    Temperature Control Board

    If the air conditioner does not cool the temperature control board might be defective. The temperature control board provides the voltage to the fan motor and compressor. These boards are often misdiagnosed. Check all other components to be certain this is the cause of the problem.

    Run Capacitor

    Every air conditioner has a compressor motor. Every compressor has a run capacitor attached to the electrical leads. If the run capacitor burns out the compressor will not run. The run capacitor can be checked with a special meter to see if it is defective.

    Exhaust hose connector 5 inches in diameter

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    Fan Blade

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    Blower Wheel

    jeff.
    Last edited by jeff1; 03-07-2019 at 01:03 PM.
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