Outdoor unit for air conditioner and air conditioner

An outdoor unit for an air conditioner, comprising:

• a housing;
• a refrigerant charging nozzle provided in the housing;
• a connector assembly having a first end connected with the refrigerant charging nozzle and a second end extending out of the housing;
• a communication tube having a first end provided with a first connector and a second end provided with a second connector, the first connector is connected with the refrigerant charging nozzle, and the second connector extends out of the housing, wherein the second connector comprises a fixing member and a connector cap;
• a lateral plate, the lateral plate provided with an opening portion;
• and
• a cover plate detachably connected with the lateral plate to cover the opening portion and the connector cap,
• wherein the second connector extends out of the housing through the opening portion,
• wherein the opening portion having an edge provided with at least one limiting groove,
• wherein the communication tube extends into the at least one limiting groove and is fitted with the at least one limiting groove, and
• wherein the connector cap and the cover plate are removed for a system pressure detection, a vacuuming, or a refrigerant adding operation.