A liquid ejecting device comprising: a head unit; and a head unit control circuit provided outside and configured to control the head unit the head unit including: an ejecting section that includes a piezoelectric element, and can eject a liquid corresponding to displacement of the piezoelectric element, the piezoelectric element being displaced corresponding to a change in potential of a drive signal when the drive signal has been supplied to the piezoelectric element; a determination circuit that is configured to determine whether or not the piezoelectric element has a predetermined electrical storage capability; and an ejection limit circuit that is configured to stop the supply of the drive signal to the piezoelectric element and is configured to limit the ejection of the liquid from the ejecting section when a result of the determination is negative, the head unit control circuit being configured to supply an instruction signal (Tsig2), a first designation signal, and a second designation signal to the head unit, the instruction signal (Tsig2) instructing the head unit to execute the determination, the determination circuit being configured to execute the determination during a determination period in which the first designation signal is set to a high level, the second designation signal is set to a low level, and the instruction signal (Tsig2) is supplied. a head unit; and a head unit control circuit provided outside and configured to control the head unit the head unit including: an ejecting section that includes a piezoelectric element, and can eject a liquid corresponding to displacement of the piezoelectric element, the piezoelectric element being displaced corresponding to a change in potential of a drive signal when the drive signal has been supplied to the piezoelectric element; a determination circuit that is configured to determine whether or not the piezoelectric element has a predetermined electrical storage capability; and an ejection limit circuit that is configured to stop the supply of the drive signal to the piezoelectric element and is configured to limit the ejection of the liquid from the ejecting section when a result of the determination is negative, the head unit control circuit being configured to supply an instruction signal (Tsig2), a first designation signal, and a second designation signal to the head unit, the instruction signal (Tsig2) instructing the head unit to execute the determination, the determination circuit being configured to execute the determination during a determination period in which the first designation signal is set to a high level, the second designation signal is set to a low level, and the instruction signal (Tsig2) is supplied. an ejecting section that includes a piezoelectric element, and can eject a liquid corresponding to displacement of the piezoelectric element, the piezoelectric element being displaced corresponding to a change in potential of a drive signal when the drive signal has been supplied to the piezoelectric element; a determination circuit that is configured to determine whether or not the piezoelectric element has a predetermined electrical storage capability; and an ejection limit circuit that is configured to stop the supply of the drive signal to the piezoelectric element and is configured to limit the ejection of the liquid from the ejecting section when a result of the determination is negative, the head unit control circuit being configured to supply an instruction signal (Tsig2), a first designation signal, and a second designation signal to the head unit, the instruction signal (Tsig2) instructing the head unit to execute the determination, the determination circuit being configured to execute the determination during a determination period in which the first designation signal is set to a high level, the second designation signal is set to a low level, and the instruction signal (Tsig2) is supplied.