A remote maintenance server for remotely maintaining at least one maintenance point provided with an air conditioner having a plurality of indoor units performing air conditioning and at least one outdoor unit connected to the indoor units to drive the indoor units, the remote maintenance server comprising: a display unit configured to display a maintenance screen for maintaining the at least one maintenance point; and a controller configured to control at least one of an operation rate for the plurality of indoor units, a set temperature, and a compression capacity of a compressor contained in the air conditioner according to a control setting value, and control the display unit to display control information which is information associated with at least one of a control status and a control result in which at least one of the control setting value, the operation rate, the set temperature and the compression capacity is controlled in a first region on the maintenance screen, the remote maintenance server being characterized in that: the remote maintenance server further comprises a communication unit configured to perform communication with the at least one maintenance point and to acquire consumption power information consumed by the air conditioner, the communication unit receives a demand response control request for the at least one maintenance point from a power maintenance system, and the controller generates a control command when the DR control request is received, wherein the controller activates a DR control mode when the DR control request is received, and generates the control command to adjust the set temperature based on a DR control rate when the DR control mode is activated, the DR refers to allowing an end customer to use power in response to a price or monetary compensation or instruction of a power company, and the DR includes midnight electricity utilization, maximum demand power control, direct load control, remotely controlled air conditioning and time-based pricing. a display unit configured to display a maintenance screen for maintaining the at least one maintenance point; and a controller configured to control at least one of an operation rate for the plurality of indoor units, a set temperature, and a compression capacity of a compressor contained in the air conditioner according to a control setting value, and control the display unit to display control information which is information associated with at least one of a control status and a control result in which at least one of the control setting value, the operation rate, the set temperature and the compression capacity is controlled in a first region on the maintenance screen, the remote maintenance server being characterized in that: the remote maintenance server further comprises a communication unit configured to perform communication with the at least one maintenance point and to acquire consumption power information consumed by the air conditioner, the communication unit receives a demand response control request for the at least one maintenance point from a power maintenance system, and the controller generates a control command when the DR control request is received, wherein the controller activates a DR control mode when the DR control request is received, and generates the control command to adjust the set temperature based on a DR control rate when the DR control mode is activated, the DR refers to allowing an end customer to use power in response to a price or monetary compensation or instruction of a power company, and the DR includes midnight electricity utilization, maximum demand power control, direct load control, remotely controlled air conditioning and time-based pricing. the remote maintenance server further comprises a communication unit configured to perform communication with the at least one maintenance point and to acquire consumption power information consumed by the air conditioner, the communication unit receives a demand response control request for the at least one maintenance point from a power maintenance system, and the controller generates a control command when the DR control request is received, wherein the controller activates a DR control mode when the DR control request is received, and generates the control command to adjust the set temperature based on a DR control rate when the DR control mode is activated, the DR refers to allowing an end customer to use power in response to a price or monetary compensation or instruction of a power company, and the DR includes midnight electricity utilization, maximum demand power control, direct load control, remotely controlled air conditioning and time-based pricing.