An inkjet recorder includes at least one nozzle ejecting ink, at least one piezoelectric element, a power unit, and a processor. The at least one piezoelectric element deforms in response to an applied voltage and causing a change in pressure of ink to be supplied to the nozzle. The power unit supplies power for application of a driving voltage to the piezoelectric element. The processor cyclically applies the driving voltage in accordance with a predetermined driving voltage pattern to the piezoelectric element, acquires a representative value corresponding to the power supplied by the power unit in response to the application of the driving voltage, and detects an abnormal capacitance of the piezoelectric element determined based on the representative value.