The air conditioner is turned on and off. Let's talk about the reason first.

First, check whether the compressor works normally. If the thermal protector of the compressor trips, the compressor will not work and will not be cooled when it is hot. Whether it is good or bad, the temperature of the air conditioner will not drop. First of all, let's understand the reason for the thermal protection of the compressor: 1, the heat sink is too dirty, which leads to poor heat dissipation and thermal protection. It is suggested to clean the heat sink in time to make it radiate normally and work normally. 2. The speed of the fan is reduced. One reason is that the capacitance is reduced, another reason is that the motor is poorly lubricated, the third reason is that the motor coil is short-circuited, and the fourth reason is that the fan blade is broken or deformed. If the refrigeration of the compressor is not good, first check whether there is condensed water discharged from the indoor unit and whether the heat sink of the outdoor unit is hot, and then check whether the thick pipe in the connecting pipe joint of the outdoor unit is colder than the thin pipe and whether there is condensed water. If the thick pipe is not cold, it is probably caused by lack of fluorine, so it is necessary to add a proper amount of freon. Remember not to add too much freon, so as not to increase the load of the compressor, which is very easy to damage the compressor after long-term use.