06-29-2013, 03:52 PM
(This post was last modified: 06-29-2013, 03:53 PM by Paptillian.)
I want to poll the ResMed H5i heated humidifier users here because I'm trying to ascertain whether or not the sounds my unit makes are normal. They're very faint and hard to hear. If the blower unit is on, you probably won't notice them. The best time to catch these sounds is when you're heating up the water chamber before beginning treatment for the night.
The first sound is an intermittent clicking noise. I wonder if this is maybe the heating element or something expanding because of the heat?
The second sound comes from the area containing the LED that lights up red or blue in the water chamber. When the LED is red (chamber warming up), you can hear a faint fizzing/buzzing kind of sound and the LED seems to dim at the same frequency. It's analogous to a lamp with a ballast that's starting to go bad. You need to look really close at the chamber to catch this, otherwise you can't see the flickering of the light or hear the fizzing sound. Haven't had any issues with the humidifier function, though.
Sound faulty to me, have it checked or replaced
Make sure the lid rubber seal not missing, lid hinges properly attached and you hear click when closing the lid
06-30-2013, 08:44 AM
(This post was last modified: 06-30-2013, 08:46 AM by OMyMyOHellYes.)
Never heard anything like that, but I don't pre-heat either.
I don't like electrical anything making buzzing or popping noises.
I would try to take it back to the DME and do a side-by-side comparison with a demo unit - at least that may give you some peace of mind if their H5i also does it.
Unless they just go ahead and say "No, we need to replace that" right up front.