Evaluation results: one level 1 hotline low flow system was returned for investigation in used condition.The unit had a broken lcd screen.In addition, there was wear and tear on the following components: enclosure, front cover, tank cover, and line cord.The micro-switch was also bent.The tank was filled with water, a temp-check was attached, and the line cord was plugged in.The power switch was then turned on.The customer reported product problem was confirmed during testing.The device powered on but nothing was appearing on the display.The investigator suspected that this issue was related to customer use.The pcb, enclosure, tank cover, micro-switch, line cord and flux plug were all replaced.The exact problem source of the reported product problem was unknown.A root cause was not established.
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