Sorry to dig up an old thread, but.... every once in a while I find myself needing to find this info again and spend hours searching and translating Chinese manuals, so here are the functions for future reference:
F01 - Upper temp limit(will turn on/off the heat/cooling at these temps to stay in this range) (-39-50c - factory default -10)
F02 - Lower temp limit (will turn on/off the heat/cooling at these temps to stay in this range) (-40-49c - factory default -20)
F03 - Temperature adjustment if probe reports incorrect temp (+-5c - factory default 0)
F04 - Compressor delay (0-9 min - factory default 3)
F05 - Alarm threshold (0-20c factory default 15)