Are you asking why the off-line machine in Herdo shows 83 fault code? The reason why Haier multi-line external machine displays 83 fault code is: Haier multi-line defrosting protection. It is caused by insufficient refrigerant in the refrigeration system and severe frosting in the condenser. If this code appears, it is usually because there is an open circuit in the computer version, which is probably due to the breakdown caused by excessive instantaneous power. Haier Group Co., Ltd. is one of the top 500 enterprises in China. It is the fourth largest white goods manufacturer in the world and the most valuable brand in China.