This report is being supplemented to provide additional information based on the legal manufacturer's investigation.A review of the device history record confirms the subject device was shipped in accordance to specifications.Based on the results of the legal manufacturer's investigation, the phenomenon likely occurred during the water filter replacement process, an event occurred in which the main control panel / sub control panel became inoperable.In addition, it is also likely the main / sub control panel came inoperable because the ic (integrated circuit chip) of the main / sub panel failed caused by the accumulation of stress due to the use of the device or accidental failure.
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