Event methods, evaluation, and conclusion codes: updated.One warmer device was received for investigation.During visual inspection the device was observed to have a damaged display label, split line cord, and normal wear and tear on the enclosure.The top socket was missing an o-ring, and damages were found on the heater component.The device also contained an old model of circuit board and float switch.The reported issue was confirmed during functional testing, when there was no power to the warmer compressor.The investigation traced the issue to the compressor, which was determined to be faulty.However, no root cause could be identified for the reported issue.As no manufacturing root cause could be identified, no review of manufacturing device history records was conducted.A review of device confirmed this device has not been in for service previously.Due to the age of the device, it has been deemed beyond economical repair and will be decommissioned.
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