S9 pressure error

alan123 · Post by **alan123** » Tue Nov 01, 2011 6:40 pm

I have had two RESMED S9 autopap machines and when I checked the pressure with the sleep center at the hospital, their manometer showed on both machines that the pressure I set was much higher than the real pressure on manometer. 12cm set only read at 8! Does anyone else have this issue on their S9 Resmed machines??????