... function of temperature display,setting up,control temperature automatically,defrosting,protection,automatic control, etc;4. The control box is featured with many instructions ... Q F 9 A JZDK: The series No. of electric control boxQ: The code of adopted compressor, Q: fully closed ... DKBF(S) are started in separate coil wire. Chiller Control System the Electric Control Box for Cold Storage Equipments