Method of determining a canister full condition in a negative pressure wound therapy system during a negative pressure wound therapy, comprising the steps of i. determining and recording a number of pump turns associated with an electrical pump used for generating a negative pressure in the negative pressure wound therapy system, wherein the number of pump turns is determined for a predetermined period of time, ii. determining and recording a plurality of negative pressure values by means of a pressure sensor, wherein the plurality of negative pressure values is determined for the predetermined period of time, iii. calculating and recording a negative pressure variation score by means of the recorded negative pressure values of method step ii., iv. generating a first or a second canister full detection data set, said first or said second canister full detection data set comprising - the recorded number of pump turns and - the recorded negative pressure variation score, v. executing a classification algorithm, which allows to discriminate - a first canister full detection data set, said first canister full detection data set being correlated to a canister not full condition of the negative pressure wound therapy system, from - a second canister full detection data set, said second canister full detection data set being correlated to a canister full condition of the negative pressure wound therapy system, wherein the classification algorithm includes a support vector machine. i. determining and recording a number of pump turns associated with an electrical pump used for generating a negative pressure in the negative pressure wound therapy system, wherein the number of pump turns is determined for a predetermined period of time, ii. determining and recording a plurality of negative pressure values by means of a pressure sensor, wherein the plurality of negative pressure values is determined for the predetermined period of time, iii. calculating and recording a negative pressure variation score by means of the recorded negative pressure values of method step ii., iv. generating a first or a second canister full detection data set, said first or said second canister full detection data set comprising - the recorded number of pump turns and - the recorded negative pressure variation score, - the recorded number of pump turns and - the recorded negative pressure variation score, v. executing a classification algorithm, which allows to discriminate - a first canister full detection data set, said first canister full detection data set being correlated to a canister not full condition of the negative pressure wound therapy system, from - a second canister full detection data set, said second canister full detection data set being correlated to a canister full condition of the negative pressure wound therapy system, wherein the classification algorithm includes a support vector machine. - a first canister full detection data set, said first canister full detection data set being correlated to a canister not full condition of the negative pressure wound therapy system, from - a second canister full detection data set, said second canister full detection data set being correlated to a canister full condition of the negative pressure wound therapy system,