Newbie query - blockage error

Hello, it's the middle of the night here and I've just switched my machine off because something is wrong, I can't work out what & I'm keeping my jetlagged hubby awake. About 2.5 hours in I woke up and hubby prodded me cos airpump had stopped. Machine showed a blockage error but I couldn't find any kinks, no significant moisture (couple of droplets in nosepiece only) and no other apparent reason for error. Unplugged hose & reconnected to machine & unplugged/reconnected all other hose connections - no joy. Restarted machine - no longer reporting error but I felt suffocated & both hubby & I thought it sounded wrong. I could also open mouth with no feedback, although not talk. I switched unit off at the wall 10 seconds before restarting, and removed/repositioned humidifier to no effect. Hubby reckons it sounds like the pump isn't working. I'm not going to get up & look at data at this hour so will just sleep unassisted for the rest of the night & will call DME in morning. Any suggestions what could be causing this? Macine is a rental & this is my 11th night.

follow up when you're awake and alert.

OK, first time trying to post my results from SleepyHead, trying to work out what went wrong with my machine last night.



That doesn't really tell me anything about the blockage error, although I'm certainly no expert in reading results.

Any suggestions? Thanks!