Posted by hapydazy on June 30, 2009 at 12:47:50:I have had the Remstar Plus M SEries with humidifier for 1 1/2 years. I use level 3 on the humidifier. Now I am smelling a burning smell thru my mask but when I turn off the humidifier it stops. I have wiped cleaned the heating element and the resivoir metal plate, changed the filters and still it starts smelling about 3 minutes into the cycle. Any suggestions or experiences with this problem?