초록 ▼

A temperature-controlled appliance control system in which a compressor runtime is stored in a memory. If the runtime reaches a critical point an error message is displayed. The service technician can display this information by the monitor on the appliance, downloading it to a computer, relaying by

A temperature-controlled appliance control system in which a compressor runtime is stored in a memory. If the runtime reaches a critical point an error message is displayed. The service technician can display this information by the monitor on the appliance, downloading it to a computer, relaying by modem, or any other conceivable way. The information displayed will go back in different intervals (runtime for day, week, and numbers of cycles). The memory eliminates the effect of defrost from the given compressor runtime.

대표청구항 ▼

1. A control system for a temperature-controlled appliance having a refrigerator compressor and a freezer compressor to monitor an operational history of the appliance, comprising:a signal line connected separately to the refrigerator compressor and the freezer compressor, the signal line conveying

1. A control system for a temperature-controlled appliance having a refrigerator compressor and a freezer compressor to monitor an operational history of the appliance, comprising:a signal line connected separately to the refrigerator compressor and the freezer compressor, the signal line conveying run times of the refrigerator compressor and freezer compressor; and a service controller having a memory device, wherein the service controller calculates a percentage run time over a predetermined period of time of the refrigerator compressor and freezer compressor run times that are conveyed along the signal line to the memory device and compares the calculated percentage run time to a predetermined critical value to determine if a warning signal should be issued that the appliance should be inspected, and wherein defrosting time periods are not computed in calculating the refrigerator compressor run time to obtain a more accurate performance record of the refrigerator compressor.