Evaluation results: one level 1 hotline low flow system was returned for investigation in used condition.Visual inspection revealed that the float switch was stained red, the enclosure was cracking by the drain fitting, both the covers were cracked, and the line cord was worn.The investigator subsequently filled the tank with water, attached a temperature fixture, plugged in the line cord, and turned on the power switch.The customer reported product problem (failure to power on) was confirmed during testing.The product problem occurred because of a defective component in the micro switch.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 micro switch was replaced in order to correct the reported product problem.
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