In choosing an AVR fitted for your appliance, it should always be 3x the rated power of the appliance. Since it has 228W rated power, your AVR rating should be at least 1000w.
It is okay.. Humidity temp po kasi yung nakadisplay.. As long as nai-set nyo po ung desired temp, unti unti po siyang magbabago po and pupunta po sa desired temp nyo po