| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic ice making machine accurately detecting a failure of a delay or shortening of ice making time by preventing erroneous determination. SOLUTION: The flow-down type ice making machine includes an ice making failure detection timer 54 measuring an ice making failure determination time required for the water level in an ice making water tank to reach from the upper side water level to the lower side water level in an ice making operation. Moreover, a determination part determines that an ice making failure occurs when a difference between an ice making failure determination time measured by the ice making failure detection timer 54 and a variable reference time based on an ice making failure determination time measured by the ice making failure detection timer 54 in an ice making operation prior to the ice making operation exceeds a set value. The variable reference time is set to be an ice making failure determination time measured by a calculating part in the last ice making operation. COPYRIGHT: (C)2011,JPO&INPIT |
