[CPAP] What does this mean on my Fisher Paykel icon+

[annoyed]

I checked it is supposed to be "SUM", but there is no way I used it for 8797 hours. First I thought it was 88 hours but that makes no sense too so I am confused. It has been only 7 months since I purchased it and I used it maybe 1 months max. I had a hard time uploading the image so here is the link=image

[Jeff8356]

Looking at the manual for your machine, that may be the "Check Sum" which is typically used to verify data integrity and likely has nothing to do with hours used.

The other Sleep Data settings are:

• Total compliant hours
  
• Average compliant hours last 30 nights
  
• Percent of nights used > 4 hours last 30 nights
  
• Number of nights used since therapy commenced
  
• Check Sum
  

Do the other Sleep Data settings match the amount of time you used the machine?