Air-conditioner and method for controlling driving thereof

A method for controlling a driving of an air-conditioner, comprising the steps of:

• receiving a first control signal for on-off controlling an indoor fan of an indoor unit and a compressor of an outdoor unit in the air-conditioner;
• measuring a generation time of the received first control signal;
• and
• rotating the indoor fan at a high or a low speed and varying a compression capacity of the compressor in the outdoor unit, depending on the measured generation time.

An air-conditioner, comprising:

• an indoor fan;
• an outdoor unit having at least one or more compressors driven with respectively different compression capacities;
• an indoor unit for generating a first control signal to on-off control the compressor of the outdoor unit and the indoor fan, depending on an indoor temperature and a temperature predetermined by a user;
• and
• a converter for generating a second control signal to rotate the indoor fan at a high or a low speed and to vary a compression capacity of the outdoor unit, depending on a generation time of the first control signal.

A method for controlling a driving of an air-conditioner, comprising the steps of:

• generating a first control signal for on-off controlling an indoor fan and an indoor unit, depending on an indoor temperature and a temperature predetermined by a user;
• measuring a generation time of the first control signal;
• comparing the measured time with a predetermined reference time;
• and
• generating a second control signal for rotating the indoor fan at a high or a low speed and varying a compression capacity of an outdoor unit, depending on the compared result.

An air-conditioner, comprising:

• an indoor fan rotated at a high or a low speed on the basis of a two-stage control signal;
• a two-stage outdoor unit for driving internal compressors with a small compression capacity or a large compression capacity on the basis of the two-stage control signal;
• a single stage thermostat for generating a driving signal on the basis of an indoor temperature and a temperature predetermined by a user;
• a single stage indoor unit for generating a single stage control signal to on-off control the compressor and the indoor fan, depending on the driving signal;
• and
• a converter for generating a two-stage control signal to rotate the indoor fan at a high or a low speed and to vary a compression capacity of the two-stage outdoor unit, depending on a generation time of the single stage control signal, and for outputting the two-stage control signal to the indoor fan and the two-stage outdoor unit.