The reported complaint of " the autopulse platform (sn: (b)(4)) displayed user advisory (ua)41 (patient temperature sensor failure) error message upon powering up" was confirmed based on the archive data review but not confirmed during the functional testing.No device malfunction was observed that could have caused or contributed to the reported ua41 error message.A review of the autopulse platform archive revealed that frequent daily checks were performed by the customer.As reported by the customer, the autopulse platform was stored in their ambulance.Factors such as ambient storage condition (e.G.A fire truck sitting in a hot and humid environment and/or being exposed to direct sunlight for long hours) as well as using the platform on a soft surface that may block air vents will increase the internal temperature of the autopulse platform and can cause the occurrence of a ua41 error message.There was no physical damage observed on the returned autopulse platform during the visual inspection.A review of the autopulse platform archive was performed and showed multiple ua41 (patient temperature sensor failure) error messages to have occurred on the customer's reported event date; thus, confirming the reported complaint.The autopulse platform passed initial functional testing without any fault or error, and therefore, the reported complaint could not be replicated.Furthermore, the autopulse was subjected to a run-in test using the 95% patient large resuscitation test fixture (lrtf) with good known test batteries until discharged for 30 minutes, and the platform passed the test without any fault or error.Moreover, internal inspection of the autopulse platform was performed and found no fault or device malfunction.Nevertheless, the temperature sensor cabling was replaced as a preventive precautionary measure, as the sensor may have had some intermittent technical problems that could not be directly identified during the functional testing.After replacing the temperature sensor cabling, the autopulse was subjected to a run-in test using the 95% patient large resuscitation test fixture (lrtf) with good known test batteries until discharged for 15 minutes, and the platform passed the test without any issues.Awaiting the customer's approval for repair.
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