I don't use a humidifier, so water isn't it.

I have a Respironics M Series CPAP bought in 2008. I was traveling and the machine got knocked off the bed during the night. Ever since then it's been acting funky. When I plug it in, it beeps and flashes the lights rapidly, and the screen says "Service Needed". If I unplug and plug it back in a num...

I just got my REMstar Auto M- series with A-Flex. Looks like a nice machine. I'm replacing my C-flex model. I thought I'd use the C-Flex setting to start since it's what I'm used to, then when I get more time will try out A-Flex. I can't figure out how to change the setting to C-flex? I see nothing ...