Method for operating a cooling- and heating circuit of a motor vehicle

Method for operating the cooling and heating circuit (10) of a motor vehicle that comprises three coolant paths (28, 30, 32) that pass through a bypass line, main combustion engine cooler and heat exchanger respectively. Pump (14), values and control unit (22) complete the circuit. The control unit sets a higher volume flow for the pump if the driver varies the temperature setting (38) for the vehicle interior.