A method of operating a cooling appliance comprising; providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser and a compressor, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, characterized in that the control unit determines whether the second evaporator is activated after or before the first evaporator, and if the second evaporator is activated after the first evaporator, the control unit measures last five run time of the first evaporator and if the average run time of the first evaporator is equal or less than 30%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of F, if the average run time of the freezer is between 30% to 50%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of E, if the average run time of the freezer is equal or greater than 50%, activates the compressor to pump out the refrigerant towards the condenser at an rpm of D, or if the second evaporator is activated before the first evaporator, the control unit measures last five run time of the first evaporator and if the average run time of the first evaporator is equal or less than 30%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of C, if the average run time of the first evaporator is between 30% to 50%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of B, if the average run time of the first evaporator is more than 50%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of A, wherein A > B > C and D > E > F and wherein A is equal to F. providing a freezer compartment and a first evaporator configured to cool the freezer compartment upon activation, providing a fresh food compartment and a second evaporator configured to cool the fresh food compartment upon activation, providing a valve configured to direct the flow of the refrigerant towards the freezer evaporator or to the fresh food evaporator, providing a check valve on an outlet of the freezer evaporator, providing a condenser and a compressor, providing a control unit that activates or deactivates the first evaporator, the second evaporator, compressor and the valve, characterized in that the control unit determines whether the second evaporator is activated after or before the first evaporator, and if the second evaporator is activated after the first evaporator, the control unit measures last five run time of the first evaporator and if the average run time of the first evaporator is equal or less than 30%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of F, if the average run time of the freezer is between 30% to 50%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of E, if the average run time of the freezer is equal or greater than 50%, activates the compressor to pump out the refrigerant towards the condenser at an rpm of D, or if the second evaporator is activated before the first evaporator, the control unit measures last five run time of the first evaporator and if the average run time of the first evaporator is equal or less than 30%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of C, if the average run time of the first evaporator is between 30% to 50%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of B, if the average run time of the first evaporator is more than 50%, the control unit activates the compressor to pump out the refrigerant towards the condenser at an rpm of A, wherein A > B > C and D > E > F and wherein A is equal to F.