Thank you for your reply.
Well.
Recently,I discovered that my electricity bill is higher than before, I live alone, and I have not added electrical appliances.When I go out,I usually only have one refrigerator in my home.
Its rated power is 1000W / 24h, but after 9 hours of actual use,the meter display has increased by 900W, I don't know where is the problem. Is any component broken inside?