| http://www.w3.org/ns/prov#value | - WATER SUPPLY ERROR - Display shows such as fig. 1 - Water Supply Error occurs when water level frequency does not show changes more than 100Hz or water is not supplied up to the water level presetting for 20 min or more at the time of initial water supply. -The error status can be cleared by turning POWER S/W OFF and resuming the POWER ON initial status. 2.
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