A ventilator system comprising: a pressure generating system adapted to generate a flow of breathing gas; a ventilation tubing system including a patient interface for connecting the pressure generating system to a patient; one or more sensors operatively coupled to at least one of the pressure generating system, the patient, and the ventilation tubing system, wherein the one or more sensors generate output indicative of an inspiration flow; at least one processor; and a memory for storing and encoding computer-executable instructions that, when executed by the at least one processor is operative to: calculate a first target airway pressure based on a percent support setting, deliver a portion of the first target airway pressure to the patient because the first target airway pressure is truncated in response to an occurrence of a high pressure alarm, characterised in that: the at least one processor is further operative to: in response to the high pressure alarm, reduce the percent setting to form a reduced percent support setting, calculate a second target airway pressure based on the reduced percent support setting, and deliver the second target airway pressure to the patient. a pressure generating system adapted to generate a flow of breathing gas; a ventilation tubing system including a patient interface for connecting the pressure generating system to a patient; one or more sensors operatively coupled to at least one of the pressure generating system, the patient, and the ventilation tubing system, wherein the one or more sensors generate output indicative of an inspiration flow; at least one processor; and a memory for storing and encoding computer-executable instructions that, when executed by the at least one processor is operative to: calculate a first target airway pressure based on a percent support setting, deliver a portion of the first target airway pressure to the patient because the first target airway pressure is truncated in response to an occurrence of a high pressure alarm, characterised in that: the at least one processor is further operative to: in response to the high pressure alarm, reduce the percent setting to form a reduced percent support setting, calculate a second target airway pressure based on the reduced percent support setting, and deliver the second target airway pressure to the patient. calculate a first target airway pressure based on a percent support setting, deliver a portion of the first target airway pressure to the patient because the first target airway pressure is truncated in response to an occurrence of a high pressure alarm, characterised in that: the at least one processor is further operative to: in response to the high pressure alarm, reduce the percent setting to form a reduced percent support setting, calculate a second target airway pressure based on the reduced percent support setting, and deliver the second target airway pressure to the patient. in response to the high pressure alarm, reduce the percent setting to form a reduced percent support setting, calculate a second target airway pressure based on the reduced percent support setting, and deliver the second target airway pressure to the patient.