You might also try separating the humidifier from the cpap machine and shutting everything down leaving it off, then reassembling it all and trying again. Just to see if you can get everything to possibly reset.
The final error code also indicates a defective hose, but as you've tried multiple hoses with the same results I did not post that here. I am just posting it here so if anyone in the future has this issues they are aware of the three issues that could cause it.
#1- Using the 60W power supply instead of the 80W power supply.
#2- A defective power supply.
#3- A defective climate line.
If everyone thinks alike, then someone isn't thinking.
Everyone knows something, together we could know everything.
So I detached everything from each other and unplugged the power supply from the wall and left it all sitting for a half hour.
I plugged everything back in and got the same results, so I'm convinced something is defective. I'll call the supplier and see what they want to do next. Hopefully insurance will cover it.
I was having the same issue - but when I used an 80w power supply, all the locks disappeared.