(b)(4).Method: the complaint iw910 mobile infant warmer harness connector was not returned to fisher & paykel healthcare in (b)(4) for evaluation.Our investigation is accordingly based on the information provided by the hospital, previous investigations into similar complaints, and our knowledge of the product.Conclusion: the upper and lower harnesses are used to connect the head unit to the control unit of the infant warmer.Previous investigations of similar complaints revealed that the discoloured harness connectors of the infant warmers were most likely the result of arcing that occurred between two electrical contacts, leading to contact failure.The arcing was most likely caused by a poor connection.Based on the lot number, the unit is over 12 years old.The infant warmer controller continuously monitors the electrical power delivered to the heating element and when it is detected insufficient due to open circuit or a faulty harness connection, the infant warmer enters a fail-safe state (e17), ceases power to the heating element and then emits an audible and visual alarm.The infant warmer controller continuously monitors the power delivered to the heating element.Should the connectors completely fail, the infant warmer displays an error code and enters a fail safe state where the heater element is disabled and the infant warmer alarms to allow the user to act and provide an alternate means of warming.All components on the harness assembly of the infant warmer are enclosed in a fire retardant sheath and fire rated by underwriters laboratories (ul).
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