iFixit - Answers With Device "Respironics CPAP"

Respironics REMstar Plus M Series: After unplugging my machine it won’t come back on, just beeps

Fri, 14 Mar 2025 05:40:42 -0700

My cpap won’t come on and it just beeps with the three lights flashing.

I unplugged it and now it won’t work

⟐ Answered March 14, 2025 at 5:40 MST

Respironics Remstar Choice: Can pressure setting be changed on Remstar Choice LS

Fri, 24 May 2024 20:21:55 -0700

I have this older machine. I need to have the Pressure increased. Is this something I can do? Or does it need to be taken somewhere??

Thanks,

John Daniels

⟐ Commented May 24, 2024 at 20:21 MST

Respironics CPAP: Relentless reboots, but runs fine once started.

Sun, 22 Feb 2026 23:03:35 -0700

Worked fine originally after receiving donated used unit. After a few months, pushing the start button would beep, display logo, display FW version, display flow rate, spin up the blower, then go dark and start the cycle over.

Eventually, the blower stays on and it runs through my sleep cycle like nothing ever happened. This normal state might be reached after 20 restarts. Also, after some random restart count it will stay off, requiring a replug power-up to begin the restart cycle anew, up to three replugs and about 20min being a worst case. Best case it fires up after about 10 restarts. I just realized I've never checked the display before a replug so I'll do that tonight. I checked, it goes blank when it's all beeped out.

All functions, settings, and input buttons work as expected after running, including the humidifier. No leaks or bad gaskets, blower spins freely. About to replace PCA button battery but the old one had good voltage. Contact cleaner used when resetting every jack. Power supply good. Filters clean. I'll be rechecking all of these things one more time plus a picky board inspection, but I don't expect to find a problem at component level.

I can't imagine what kind of consistent, repeatable error could exist with no fault found. It behaves as if some sensor feedback is telling the algorithm that it can't run or start. Considering getting a serial adapter module and downloading the tech software but I have never seen an error code on the display.

Subjectively, 3 things I find interesting are:

1) the restart blower puff seems to gain volume and power up to the running state; if it dwindles or remains lame it's likely restart attempts will stop until a replug

2) dial digit 4 is slightly dim, but lights as expected

3) I checked the button battery voltage in situ, and it crept upwards. I've never seen this before but some reading tells me their may be an intentional capacitor storage, maybe to kick start the blower or something.

I could talk about this all night, given that a new machine will run me $1400CDN.

⟐ Commented February 22, 2026 at 23:03 MST

Respironics Remstar Choice: Power button is not working

Mon, 31 Jul 2023 05:48:48 -0700

The power button is not working, it does not want to stay on. The machine not has no power? And is not working

Philips Respironics System One REMstar: How do I fix the temperature of the heater plate?

Sat, 25 Mar 2023 19:37:34 -0700

This is with a Philips Respironics system one REMstar Auto A-Flex.

Referance number: 560P

The heater plate should be at 167 degrees max. it only gets up to 137 degrees.

⟐ Edited by author March 25, 2023 at 19:37 MST

Respironics RemStar Pro C-FLEX: Respironics REMstar Pro C-Flex system water bath

Fri, 30 Dec 2022 07:59:53 -0700

Looking for the water bath section of the Respironics R

EMstar Pro C-Flex device. I need to buy just a water bath section for my CPAP machine.

⟐ Edited by author December 30, 2022 at 7:59 MST

Respironics REMstar Plus M Series: It runs in and turns off

Mon, 19 Sep 2022 18:59:05 -0700

It starts up real good, and then it turns itself off and turns on and turns off