... 8 bit microcomputer of NEC or Toshiba to main board c. Apply 4 bit microcomputer & LCD to remote control d. The ... precision of temperature control <=1°C e. The display is the LEDs or the double 7segments ... ,clock,network function etc. j. It has 3minutes compressor,sensor fault, anti-cool-fan,defrosting,overload,over voltage,over pressure protection ...