Airsense Autoset 10, "Error: power connector in rear is not plugged in"

[Fats Drywaller]

I don't know offhand of any third-party power supplies compatible with the Resmed A10, but they probably exist, so if you want to economize, you could look for those first. CPAP-supply sellers will have them but not general electronics retailers; it's a specialty item. If it says specifically that it's for the Airsense 10, it should be OK.

But the guaranteed way is to pay more for the official Resmed component.

[Fats Drywaller]

When I picked up my machine, the respiratory therapist showed me the secret handshake. He also told me the secret code word, just in case. 

Is it "swordfish"?