Method for operating a refrigerant circuit of a motor vehicle, and motor vehicle

A motor vehicle with a refrigerant circuit which comprises a compressor by which, in a heating mode of the refrigerant circuit, a refrigerant can be conveyed through a first condenser of the refrigerant circuit, wherein by the first condenser an air flow which can be introduced into a passenger compartment of the motor vehicle can be heated, wherein by the compressor the refrigerant can be conveyed through a second condenser of the refrigerant circuit in the heating mode, wherein by the second condenser a further cooling of the refrigerant can be effected, wherein at least a partial flow of the refrigerant coming from the second condenser can be expanded by a first expansion member of the refrigerant circuit and can be supplied to a first evaporator of the refrigerant circuit, wherein by the first evaporator a humidity of the air flow that can be introduced into the passenger compartment of the motor vehicle can be reduced,

• wherein a control device of the motor vehicle is designed to cause a further partial flow of the refrigerant coming from the second condenser to be expanded by a second expansion member of the refrigerant circuit and to supply the further partial flow to a second evaporator of the refrigerant circuit in order to increase a heating power available at the first condenser, wherein the refrigerant coming from the evaporators can be supplied to a suction side of the compressor.