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.