I have a Philips Respironics ResMStar Plus 460 and I have been struggling without a functioning heater for months. I had disassembled the original one, cleaned it and it limped through for a few nights. Nothing seemed obviously wrong with it. So I broke down and ordered a replacement heater with the heated tubing and all. Got it a day ago. It worked briefly and now, nada.
I have a new 80W power supply that came with it. The unit seems to recognize it. I worked through the settings which all appear correct. But...
When I turn it on, the heater light will flash along with the number on the dial. You can almost hear something cycling and making the fan change pitch. I've also tried the preheat mode and the indicator comes on then goes away after a second or two.
I'm at a loss here.
Any help would be appreciated.