Owner's Manual
Page 188
... . The recirculated air position should be used only when driving on refrigerant or has a malfunction, consult an Authorized Mazda Dealer. Consult an Authorized Mazda Dealer for refrigerant inspection. Lack of time with the ignition switch in direct sunlight during hot weather, open the windows... to improve the system efficiency. The air conditioner is low on dusty roads or for a long period of refrigerant may fog up easily in the cowl grille...
... . The recirculated air position should be used only when driving on refrigerant or has a malfunction, consult an Authorized Mazda Dealer. Consult an Authorized Mazda Dealer for refrigerant inspection. Lack of time with the ignition switch in direct sunlight during hot weather, open the windows... to improve the system efficiency. The air conditioner is low on dusty roads or for a long period of refrigerant may fog up easily in the cowl grille...