A liquid discharge apparatus, comprising: a liquid discharge head configured to discharge a liquid; and a liquid circulation device , wherein the liquid circulation device , comprises: a liquid chamber configured to store a liquid to be supplied to a liquid discharge head ; a pipeline through which the liquid is circulated between the liquid chamber and the liquid discharge head; a heater configured to heat the liquid in the pipeline; a first temperature sensor to measure a temperature of the heater; a second temperature sensor to measure a temperature of the liquid in the pipeline; and a controller configured to: control the heater based on the temperature of the liquid as measured by the second temperature sensor, and monitor a change in the temperature of the heater over time as measured by the first temperature sensor and turn off the heater when the change satisfies a predetermined stop condition characterized in that the controller is further configured to: monitor a rate of change in the temperature of the heater per unit time, and turn off the heater when the rate of change exceeds a first threshold value. a liquid discharge head configured to discharge a liquid; and a liquid circulation device , wherein the liquid circulation device , comprises: a liquid chamber configured to store a liquid to be supplied to a liquid discharge head ; a pipeline through which the liquid is circulated between the liquid chamber and the liquid discharge head; a heater configured to heat the liquid in the pipeline; a first temperature sensor to measure a temperature of the heater; a second temperature sensor to measure a temperature of the liquid in the pipeline; and a controller configured to: control the heater based on the temperature of the liquid as measured by the second temperature sensor, and monitor a change in the temperature of the heater over time as measured by the first temperature sensor and turn off the heater when the change satisfies a predetermined stop condition characterized in that the controller is further configured to: monitor a rate of change in the temperature of the heater per unit time, and turn off the heater when the rate of change exceeds a first threshold value. a liquid chamber configured to store a liquid to be supplied to a liquid discharge head ; a pipeline through which the liquid is circulated between the liquid chamber and the liquid discharge head; a heater configured to heat the liquid in the pipeline; a first temperature sensor to measure a temperature of the heater; a second temperature sensor to measure a temperature of the liquid in the pipeline; and a controller configured to: control the heater based on the temperature of the liquid as measured by the second temperature sensor, and monitor a change in the temperature of the heater over time as measured by the first temperature sensor and turn off the heater when the change satisfies a predetermined stop condition characterized in that the controller is further configured to: monitor a rate of change in the temperature of the heater per unit time, and turn off the heater when the rate of change exceeds a first threshold value. control the heater based on the temperature of the liquid as measured by the second temperature sensor, and monitor a change in the temperature of the heater over time as measured by the first temperature sensor and turn off the heater when the change satisfies a predetermined stop condition characterized in that the controller is further configured to: monitor a rate of change in the temperature of the heater per unit time, and turn off the heater when the rate of change exceeds a first threshold value. monitor a rate of change in the temperature of the heater per unit time, and turn off the heater when the rate of change exceeds a first threshold value. <EOS>