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Thanks for your information that " The unit has very cold air".It's cut off by indoor coil sensor.
Reason for shut off in 5 minutes.(There are one or more reasons for the problem) Check as follows. 1. Evaporator coil,air filter and bower wheel full of dusty. Service your unit completely. 2. Check rpm of blower motor. If less rpm replace capacitor. 3.If all above is o.k and still problem means defective coil sensor. Replace it.
You need to replace you fan motor. It is going bad and the amount of amps to keep it going is causing it to over heat. The next time you try it and the motor kicks off see if the motor frame is hot. Be careful I have seen the hot enough to cook eggs. These motors can run between 68 dollars and 160 dollars. The age of the unit and your ability to replace the motor dictates a repair or a replacement. If you ck on the price of the motor and want to do it your self I will be happy to walk you thru it. good luck
If it was running fine before and you moved it and it's making noise, it sounds like something fell against the fan blades. The reason it sounds worse when you turn it up is that the fan is running fast. Grab a flashlight and check to see what might have fallen.
First shut the power off then pull the blower out and try to spin the wheel if it spins freely then check the capacitor look for any swelling or dents and unless you know how to check it out, some AC parts stores may check it for you, but a lot of people just replace it first before the motor (it costs less usually around $5.00) if it's ok then the motor is probably bad and would need to be replaced.