... starting the air conditioner.2.Adopted safty protection like:over voltage, over heat, phase absence, high or low pressure protection.3 ... No. KRBPD1 Cooling capacity Kw 20-30 Refrigerant R407C Input Voltage V DC400V/DC600V Power consumption Kw ≤9.5 Heating power Kw ... 24 Range of input Voltage V DC 300-1100 Voltage of Fan V DC 24 Compressor Frequency Hz 30-90 ...