Unplug it, then plug it back in. Unless you repair the cause of the error code, the unit will fault out every time it sees the error. It is basically saving its own life.
this sounds like your AC is short on refrigerant or you have a defective sensor. When the AC condenser turns on feel the lines leaving with your hand. If it runs for a few minuites and does not get cold and sweats the gas pressure is low, if it does it could be one of your sensors in the evaporator.
There are usually two sensors/thermistors; take off the evaporator cover and one will be on the coil (room sensor) and the other inside a copper sleeve (coil sensor) You need a multimeter to check the ohmic value. your reading should be anywhere between 4K ohms to 10 K ohms, if your readings are in ohms (0-999) the sensor needs replacing with the original value, if values are mismatched the AC will not work
Make sure all of the pressure switches are closed on the low voltage control circuit on the outdoor unit. If any are stuck open, the compressor will not kick on. Or just push the compressor contactor in with an insulated screwdriver to ensure the compressor does actually work.
