Patent ID: 11867418
Assignee: LG ELECTRONICS INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 8:
9. A method for controlling an air conditioning system including an outdoor unit, an indoor heat exchanger connected to the outdoor unit and including a temperature sensor, an auxiliary heat source arranged as an auxiliary to the outdoor unit and operated by an energy source different from an energy source of the outdoor unit, and a communicator connected to the outdoor unit, the indoor heat exchanger, and the auxiliary heat source, wherein the communicator connects a first side of the air conditioning system including a thermostat with a second side of the air conditioning system including the indoor heat exchanger and the auxiliary heat source, and wherein the outdoor unit and the auxiliary heat source are connected to the communicator using different communication schemes, the method comprising: receiving a heating signal when a heating operation is started; determining one of a first heating using the outdoor unit or a second heating using the auxiliary heat source, based on an outdoor temperature; transmitting an operation signal to the outdoor unit when the first heating is determined; determining whether the outdoor unit has failed and switching to the second heating when it is determined that the outdoor unit has failed; transmitting an operation signal to the auxiliary heat source when the second heating is determined; and determining whether the auxiliary heat source has failed and switching to the first heating when it is determined that the auxiliary heat source has failed, wherein the temperature sensor is a duct temperature sensor arranged on a duct of the indoor heat exchanger.