Heat pump laundry dryer

A laundry dryer (1) comprising a drum (2) wherein the laundry to be dried is placed, an air duct (3) wherein the processing air cycle is realized, a processing air fan (4) that provides the circulation of the processing air, a compressor (5) that realizes the refrigerant cycle, an evaporator (6) that provides the processing air in the air duct (3) to be dehumidified, a condenser (7) that provides the dehumidified processing air to be heated, a refrigerant line (8) that provides the refrigerant pressurized by the compressor (5) to pass through the condenser (7) and the evaporator (6) to be delivered to the compressor (5) again, a cooling fan (9) that provides the compressor (5) to be cooled and a control unit (10) that controls the drying process, characterized in that a first temperature sensor (11) that is disposed in the air duct (3) and the control unit (10) that does not operate the cooling fan (9) if the temperature value measured (Tmeasured-1) by the first temperature sensor (11) in the air duct (3) is lower than a predetermined first limit temperature value (Tlim-1), and that operates the cooling fan (9) if the temperature value measured (Tmeasured-1) in the air duct (3) is higher than the first limit temperature value (Tlim-1).