Air-cooled air conditioning unit controller protection device in low-temperature environment

The utility model discloses an air-cooled air conditioning unit controller protection device in a low-temperature environment, and particularly relates to the technical field of air-cooled air conditioning units, which comprises a PLC (Programmable Logic Controller), a touch screen, a cooling fan, a space heater, a timer and a temperature sensor, the output end of the touch screen, the output end of the timer and the output end of the temperature sensor are connected with the input end of the PLC, and the output end of the PLC is connected with the input end of the cooling fan and the input end of the space heater. According to the utility model, the problem of dew formation in the box caused by too fast temperature rise in the electric box at a low environment temperature is effectively solved; the temperature in the electric box is stably increased to be within the safe use temperature range of the controller, and the fuzzy control of a space heater and a cooling fan in a low-temperature environment is effe