Fault-based unit replacement

A replaceable unit premature end of life determination system, comprising:

• a processor;
• a counter operative to generate a number of operations associated with a replaceable unit;
• a fault code generator operative to generate a number of fault codes generated during operations of an associated multifunction device;
• and
• memory that stores fault code definitions, the number of generated fault codes, and an output of the counter corresponding to the replaceable unit,
• wherein the memory is in communication with the processor, which stores instructions which are executed by the processor for:
• calculating a rate of fault code occurrences generated by the fault code generator corresponding to the replaceable unit,
• comparing the number of operations for the replaceable unit to a preselected operations threshold,
• responsive to the comparison of the number of operations to the preselected operations threshold, comparing the calculated rate of fault code occurrences to a preselected fault code threshold,
• determining an end of life condition for the replaceable unit in response to the comparison of the calculated rate of fault code occurrences to the preselected fault code threshold, and
• generating a notification indicative of the end of life condition of the replaceable unit in accordance with the determination thereof.

A computer-implemented method for determining a premature end of life condition for at least one replaceable unit of an associated multifunction device comprising:

• with a processor, initiating an operations counter associated with the at least one replaceable unit to generate a number of operations for the unit;
• storing, in an associated memory, fault code occurrences generated by the multifunction device;
• calculating a rate of fault code occurrences for the at least one replaceable unit in a running history of stored fault codes;
• comparing the number of operations for the at least one replaceable unit to a preselected operations threshold;
• comparing the calculated rate of fault code occurrences to a preselected fault code threshold in response to an output of the comparison of the number of operations to the preselected operations threshold;
• determining an end of life condition for the at least one replaceable unit in response to the comparison of the calculated rate of fault code occurrences to the preselected fault code threshold;
• and
• generating a notification indicative of the end of life condition for the at least one replaceable unit in accordance with the determination thereof.