Air conditioner

An air conditioner which includes an indoor unit having plural outlet ports for blowing air into a room space and uses flammable refrigerant, the air conditioner comprising:

• an adjusting mechanism which is provided on at least one of passages toward the respective outlet ports and is configured to adjust an aperture area of the corresponding passage;
• a refrigerant gas sensor provided in the indoor unit;
• and
• a controlling unit configured to control the adjusting mechanism,
• in a driving state in which air with a first wind volume is blown out from at least one first outlet port of the outlet ports as an aperture area of a passage toward the at least one first outlet port is restricted to be small and air with a second wind volume larger than the first wind volume is blown out from a second outlet port of the outlet ports, when the refrigerant gas sensor detects refrigerant gas, the controlling unit increasing the aperture area of the passage toward one or more of the at least one first outlet port.