Investigation summary: the affected device was returned for evaluation.It had liquid crystal leakage in lcd, a faulty pump, corroded drain fitting, cracked tank cover, rusty heater, and the screw stuck in the pole clamp.Started with a visual inspection then filled tank with water, attached temp check, plugged in line cord, and turned on the power switch.Performed functional tests using procedure sr-hl-390.The lcd had liquid crystal leakage and the over temp alarm was out of calibration, confirming both of the customer's indicated failure modes.Probable cause of the damaged lcd is impact or force to the lcd.A faulty pcb or physical damage may have caused the over temp alarm to fail.As a result, the pcb was replaced.The service history review identified there was no indication that the complaint was related to a service of the device within the review period.D4.Unique identifier (udi) #:(b)(4).
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