Other, other text: b3: date of event is unknown, no information has been provided to date.Investigation including root cause analysis is in progress.A supplemental mdr will be filed as necessary in accordance with 21 cfr 803.56 when additional reportable information becomes available.
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Other text: h3, h6: event methods, evaluation, and conclusion codes: updated.One warmer device was received for investigation.During visual inspection the device was found to have an outdated model of clear float switch.The air detector door was partially disassembled and reassembled incorrectly.The reported issue was confirmed during functional testing when the lcd could not be adjusted, and the test buttons of the membrane switch were nonfunctional.The investigation traced the issue to the device circuit board, which was determined to be faulty, however, no root cause could be identified for this condition.The product's history records were reviewed and there were no non-conformances nor service-related issues that would have resulted in the reported complaint.The membrane switch, circuit board, o-rings, and fan guard were replaced and the air detector door was reassembled.
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