Samsung air conditioner error code e422

Samsung air conditioner error code e422

This error occurs due to a blockage in the pipe

Please, check the following:

  1.  Make sure the outdoor unit service valve is open.
  2.  Make sure the pipe is connected properly.
  3.  Make sure the EEV is functioning well.
  4.  Be sure there are no refrigerant leaks.
  5.  make sure the PBA EVA sensor in the indoor unit is connected properly.
  6.  Check the EVA sensor in the indoor unit.