Evaluation results: one level 1 hotline low flow system was returned for investigation in used condition.Visual inspection revealed that the enclosure was heavily stained and marked, both covers were cracked and marked, the line cord was worn, and the pole clamp handle was broken.The investigator subsequently filled the tank with water, attached the temperature check, plugged in the line cord, and turned on the power switch.The customer reported product problem (broken lcd) was confirmed during testing.The product problem occurred because of a damaged pcb board.The device history record was reviewed and showed that this device met all manufacturing specification for product released for distribution.No issues were identified that would have impacted this event.The problem source of the reported product problem was unknown.A root cause was not established.The damaged pcb and aforementioned components were replaced.Preventative maintenance was then performed.The device subsequently passed functional testing.
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