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

Claim 14:
15. An air conditioning system, comprising:
an outdoor unit;
an indoor heat exchanger connected to the outdoor unit, the indoor heat exchanger comprising a temperature sensor;
a gas furnace operated by an energy source different from an energy source of the outdoor unit;
a thermostat configured to control a temperature of an installation space supplied with cold air or warm air by the outdoor unit and the gas furnace; and
a communicator that connects a first side of the air conditioning system including the thermostat with a second side of the air conditioning system including the indoor heat exchanger and the gas furnace, the communicator comprising:
an input unit connected to the thermostat;
a first output unit connected to the gas furnace;
a second output unit connected to the outdoor unit; and
a controller configured to process signals between the input unit, the first output unit, and the second output unit, wherein the controller monitors an operating state of at least one of the outdoor unit or the gas furnace using the temperature sensor, and wherein the controller switches an operation to the gas furnace when an error is maintained in the outdoor unit for a predetermined time or longer, or when a temperature detected by the temperature sensor is maintained to be less than or equal to a first temperature for a predetermined time, wherein the outdoor unit and the gas furnace are connected to the communicator using different communication schemes.