Method and control system for a wound therapy apparatus

A control system control system for monitoring operation of a pressure gradient wound therapy apparatus, the control system comprising one or more controllers, the control system being configured to:

• receive an input signal indicative of a parameter indicative of a rate of change of pressure within the applied wound dressing;
• determine a rate of change of pressure within the applied wound dressing in dependence on the parameter, the rate of change of pressure corresponding to a leak level;
• compare the determined rate of change of pressure to a plurality of leak thresholds to categorise the leak level into one of a plurality of leak level categories;
• and
• output a control signal to control the wound therapy apparatus in accordance with one or more predetermined actions in dependence on the leak level category.