Is it hot?
In high temperature environment, the cooling load increases.
When the ambient temperature exceeds 33℃, the refrigeration load of the air conditioner will increase. In a high temperature environment, even if the air conditioner works at full load, the room temperature will not necessarily drop. This is not a problem with air conditioning, it is a normal phenomenon.
Low voltage will affect the operation of air conditioner.
If the voltage at home is too low, it may also lead to the difficulty in starting the air conditioner, or it may suddenly stop after starting it, or even lead to a blown fuse. In fact, this is not a problem of air conditioning, but a problem of grid voltage. Consider installing a power regulator to stabilize the voltage at 220V, so that the air conditioner can work normally.