Shutdown heat preservation device for combined air-conditioning unit

The utility model discloses a shutdown heat preservation device for a combined air-conditioning unit, which is characterized by comprising a controller, an electric heater and a temperature sensing probe, wherein the electric heater and the temperature sensing probe are arranged at a windward side closing position of a surface air cooler of the combined air-conditioning unit. The electric heater, the temperature sensing probe and the combined air-conditioning unit are interlocked through the controller. The shutdown heat preservation device is installed on the combined air-conditioning unit so that when the combined air-conditioning unit is in a shutdown state in winter, the controller controls the electric heater to heat the surface air cooler through temperature signals monitored by the temperature sensing probe, copper pipes can be effectively prevented from being frosted crack, and service life of the combined air-conditioning unit is effectively guaranteed.