Valve pump unit

A heat transport medium system for a vehicle, comprising:

• a first heat transport medium circuit;
• a second heat transport medium circuit;
• a valve pump unit provided between the two circuits, the valve pump unit further comprising:
• an electric motor;
• a reduction gearbox, which is driven by the electric motor;
• a first pump stage which is driven by the electric motor for conveying a heat transport medium in a first heat transport medium circuit;
• a second pump stage which is driven by the electric motor for conveying a heat transport medium in a second heat transport medium circuit;
• a multiway valve that is adjusted via the reduction gearbox, the multiway valve further comprising:
• a plurality of heat transport medium channels for providing at least two switching positions between the first heat transport medium circuit and a second heat transport medium circuit of a heat transport medium system;
• and
• a common housing section for accommodating the electric motor, the multiway valve, the reduction gearbox and also the first pump stage and the second pump stage;
• wherein, during a pumping operation, in a first direction of rotation of the electric motor, the reduction gearbox is uncoupled from the electric motor via a freewheel, and the reduction gearbox is operated in a second direction of rotation of the electric motor, opposite to the pumping operation, to adjust the multiway valve.