Combustion apparatus comprising a facility for open-loop and/or closed-loop control of the combustion apparatus , the combustion apparatus comprising at least one combustion chamber , at least one actuator , which acts on an air supply for the at least one combustion chamber , and at least one combustion sensor , which is arranged such that during operation of the combustion apparatus it is located in the region of a flame of the at least one combustion chamber , wherein the open-loop and/or closed-loop control facility comprises a memory with at least one list of support points, wherein a first air supply value of the combustion apparatus is assigned to each support point from the at least one list of support points, characterised in that a drift test value and an index for ascertainment of a test result are assigned to each support point from the at least one list of support points, wherein the open-loop and/or closed-loop control facility is configured: to generate a specified air supply for the at least one combustion chamber of the combustion apparatus on the basis of the at least one actuator ; after generating the specified air supply, to select a support point from the at least one list of support points as a function of the specified air supply and on the basis of the first air supply values; to decide on the ascertainment of a test result on the basis of the index for the selected support point; in case of a decision in favour of the ascertainment of a test result: to receive one or more signal(s) on the basis of the at least one combustion sensor ; to determine a new test result from the one signal or from the plurality of signals of the at least one combustion sensor ; to ascertain a changed drift test value for the selected support point as a function of the new test result; and to store the changed drift test value in the memory of the open-loop and/or closed-loop control facility as the drift test value assigned to the selected support point. to generate a specified air supply for the at least one combustion chamber of the combustion apparatus on the basis of the at least one actuator ; after generating the specified air supply, to select a support point from the at least one list of support points as a function of the specified air supply and on the basis of the first air supply values; to decide on the ascertainment of a test result on the basis of the index for the selected support point; in case of a decision in favour of the ascertainment of a test result: to receive one or more signal(s) on the basis of the at least one combustion sensor ; to determine a new test result from the one signal or from the plurality of signals of the at least one combustion sensor ; to ascertain a changed drift test value for the selected support point as a function of the new test result; and to store the changed drift test value in the memory of the open-loop and/or closed-loop control facility as the drift test value assigned to the selected support point. to receive one or more signal(s) on the basis of the at least one combustion sensor ; to determine a new test result from the one signal or from the plurality of signals of the at least one combustion sensor ; to ascertain a changed drift test value for the selected support point as a function of the new test result; and to store the changed drift test value in the memory of the open-loop and/or closed-loop control facility as the drift test value assigned to the selected support point. <EOS>