I should have done a search first as I started a new thread today with the same clicking issue. It is definatly not water in the hose in my case because it still does it with hose off. Here is a quote from my original post. "Hi all, I have been using CPAP for 7 years. I recently updated my equipment...

That humidifier clicking sound has been reported in the past. Several discussions about it here on this forum. ResMed is aware of it and will pooh pooh it off as normal and not a defect....others have tried to get ResMed to do something about it. Some have said they think it is some sort of relay t...

Hi all, I have been using CPAP for 7 years. I recently updated my equipment to Resmed S9 with the H5i humidifier. Love the machine except for one issue. It makes a faint clicking sound every 3-5 seconds while plugged in. This sound is there whenever power is to the machine. It is during therapy and ...