A method of controlling an electronic apparatus including: a first load portion for receiving power from a power source and generating electrical or mechanical energy; a first controller for controlling the first load portion; a communication portion capable of communicating with a remote control terminal capable of remotely transmitting a control command; a power input portion for simultaneously opening and closing a first controller power line for connecting the power source and the first load portion and a load portion power line for connecting the power source and the first load portion; a communication portion power line for connecting the power source and the communication portion, the communication portion power line being opened and closed through a communication portion switch; a load portion switch for opening and closing the load portion power line, the load portion switch being controlled by the first controller; a second controller for controlling the communication portion and the communication portion switch, the second controller being capable of communicating with the first controller; and a second controller power line for connecting the power source and the second controller such that power is constantly supplied to the second controller, the method comprising: a time information setting step of the second controller receiving an activation time for supplying power to the communication portion and a deactivation time for interrupting the power supplied to the communication portion; a standby step of interrupting (S13, S15, S17) the power supplied to the first controller, the first load portion and the communication portion, and supplying power to the second controller; a communication portion power supply step of the second controller controlling the communication portion switch to supply power to the communication portion when the activation time arrives; a message transmission step of transmitting, to the remote control terminal, a message indicating that the communication portion is activated, during the communication portion power supply step; and a step of waiting until the deactivation time is reached or until the control command transmitted from the remote control terminal is received and interrupting the power supplied to the communication portion and re-executing the standby step when the control command transmitted from the remote control terminal is not received until the deactivation time is reached. a first load portion for receiving power from a power source and generating electrical or mechanical energy; a first controller for controlling the first load portion; a communication portion capable of communicating with a remote control terminal capable of remotely transmitting a control command; a power input portion for simultaneously opening and closing a first controller power line for connecting the power source and the first load portion and a load portion power line for connecting the power source and the first load portion; a communication portion power line for connecting the power source and the communication portion, the communication portion power line being opened and closed through a communication portion switch; a load portion switch for opening and closing the load portion power line, the load portion switch being controlled by the first controller; a second controller for controlling the communication portion and the communication portion switch, the second controller being capable of communicating with the first controller; and a second controller power line for connecting the power source and the second controller such that power is constantly supplied to the second controller, the method comprising: a time information setting step of the second controller receiving an activation time for supplying power to the communication portion and a deactivation time for interrupting the power supplied to the communication portion; a standby step of interrupting (S13, S15, S17) the power supplied to the first controller, the first load portion and the communication portion, and supplying power to the second controller; a communication portion power supply step of the second controller controlling the communication portion switch to supply power to the communication portion when the activation time arrives; a message transmission step of transmitting, to the remote control terminal, a message indicating that the communication portion is activated, during the communication portion power supply step; and a step of waiting until the deactivation time is reached or until the control command transmitted from the remote control terminal is received and interrupting the power supplied to the communication portion and re-executing the standby step when the control command transmitted from the remote control terminal is not received until the deactivation time is reached.