(b)(6) mother called one of our respiratory therapists, (b)(6) and stated that his stellar device was reading an error message: system failure 21.The machine would not turn on and work properly because of this error.Recommendations from the user manual for trouble shooting said to send back to the mfr for servicing.(b)(6) then took our backup stellar to their home and put on pt.The pt did fine on it, and there were no issues.The stellar device that had stopped working was sent to the mfr, resmed for servicing.
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