Method and system for logging cycle history of an ice-making machine that is accessible to the user for service diagnosis

Abstract

An ice-making machine with an add on board that has a processor, a log program and a log memory. The log program periodically writes current values of operation parameters of the ice making of the machine in the log memory and makes the logged data available to an external device at predetermined times or when the current values contain an error condition.

1 . An ice-making machine comprising: 
 an assembly that performs an operation of making ice; and    a processor and a data log program that when executed by said processor writes in a log memory current values of a set of operational parameters of said operation.    
   
   
       2 . The ice-making machine of  claim 1 , wherein said log program periodically repeats the writing of current values in said log memory so that said log memory contains a history of ice making cycles, compressor run time and system performance.  
   
   
       3 . The ice-making machine of  claim 1 , wherein said log program causes said processor to send the values stored in said log memory to an external device.  
   
   
       4 . The ice-making machine of  claim 3 , wherein said values are sent to said external device periodically or earlier if the current values being written contain an error or in response to a received request.  
   
   
       5 . The ice-making machine of  claim 4 , wherein said request is received from said external device.  
   
   
       6 . The ice-making machine of  claim 2 , wherein when said log memory is full, the current values are written over the oldest logged current values in said log memory.  
   
   
       7 . A method of operating an ice-making machine comprising: 
 performing an operation of making ice;    writing in a log memory current values of a set of operational parameters of said operation.    
   
   
       8 . The method of  claim 7 , wherein said log program periodically repeats the writing of said current values in said log memory so that said log memory contains a history of ice making cycles, compressor run time and system performance.  
   
   
       9 . The method of  claim 7  wherein said log program causes said processor to send the values stored in said log memory to an external device.  
   
   
       10 . The method of  claim 9 , wherein said values are sent to said external device periodically or earlier if the current values being written contain an error or in response to a received request.  
   
   
       11 . The method of  claim 10 , wherein said request is received from said external device.  
   
   
       12 . The method -making machine of  claim 8 , wherein when said log memory is full, the current values are written over the oldest logged current values in said log memory.