Patent ID: 8603230

Claim:
An indoor unit of an air conditioner, comprising: a casing having an inlet and an outlet; an indoor fan that blows air drawn through the inlet, into the outlet; an air filter that captures dust contained in the air drawn through the inlet; a refrigerant circuit that performs an air conditioning operation on the air drawn through the inlet prior to being blown into a room through the outlet; a dust removing portion that performs a filter cleaning operation that removes, from the air filter, the dust captured by the air filter; a dust collecting container that collects the dust removed from the air filter; a dust storing container that stores dust transferred from the dust collecting container; a cleaning signal output portion that outputs cleaning signals indicating a need to remove the dust from the dust storing container, the cleaning signals including a warning signal, a first abnormal signal, and a second abnormal signal; an output control portion configured to control the cleaning signal output portion to output the warning signal when it is determined that an amount of dust in the dust collecting container has reached a predetermined first level, output the first abnormal signal when it is determined that the amount of dust in the dust collecting container has reached a second level that is higher than the first level, and output the second abnormal signal when it is determined that the amount of dust in the dust collecting container has reached a third level that is higher than the second level; inhibit the filter cleaning operation of the dust removing portion, when it is determined that the amount of dust in the dust collecting container has reached the second level; and perform a dust transfer operation that transfers dust collected in the dust collecting container to the dust storing container; and a reset input portion that inputs a command to terminate a state where the output control portion inhibits the cleaning operation, wherein the state where the output control portion inhibits the cleaning operation can be terminated by input to the reset input portion, only before it is determined that the amount of dust in the dust collecting container has reached the third level.