... a setting time around 60 second,lead to timerdelay start and cut off compressor power supply.Compressor stopped,at the same timeheater ... first affer connect wlth power.If want to reset while system reason lead to controller cut off,it have to reset alter heater cooling ... . 4.Controllerf Connected under 380Vofpower supply,if you want to use 220V power supply,you must disconnect D1 and X,then connects D2 ...