I am a New Maintenance Engineer in charge of a Hitachi RUA-30AT3S type Air Conditioning Unit. What is stated in the nameplate for its FLA is 17.5A however, what I am getting from my reading is 19A -21A. Can somebody explain what is really the FLA of this Air conditioning unit? I have recently discovered 1 compressor motor unit to be overcurrent, but the readings of the said compressor is lower than others.

Thank you for reading and if you can share your thoughts, it would be greatly appreciated