Engine-independent motor vehicle heating device with fuel-air ratio control

Motor vehicle heating device of the type which is operable independent of a vehicle engine and comprising a burner, fuel supply means for the delivery of a metered quantity of fuel to the burner, an electric motor operated combustion air blower means for delivering combustion air to the burner, and a control device which contains a nonvolatile data storage having initial data values for controlling operation of a specific type of heating device stored therein and a microprocessor;

• wherein said control device forms an adjustment means for changing the relative quantity of combustion air and fuel received by the burner;
• wherein at least one means for inputting a correction value to the control device is provided for changing the data values initially stored in the nonvolatile data storage for compensating for production tolerances of the actual heating device of which it forms a part;
• and wherein said control device has output means for delivering output signals to at least one of the fuel supply means and the combustion air blower means based on the data values stored in the nonvolatile data storage, said output values determining the rate of operation of said at least one of the fuel supply means and the combustion air blower means.