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Unlocking the Respironics REMstar M Series CPAP Machine

You can adjust most CPAP machines without a Doctor if you can unlock it. This is especially useful if you purchase your machine second hand and you need to adjust your CPAP machine to your prescription. I’ve seen people SELLING this information on Ebay. Search around on the internet before you pay for free information.

I own a remstar mseries CPAP machine and here is how to get into the menu where you can change the settings:

  1. Unplug the CPAP power supply.
  2. Open the top plastic flip cover
  3. Hold down BOTH arrow buttons
  4. Plug the AC power back in while continuing to hold down the arrow buttons
  5. Release the arrow buttons after you hear two quick beeps

Now you can get into the setup menu by pressing the + button. You will see:

  1. Therapy Mode (not adjustable on my machine)
  2. CPAP Pressure (This is the normal Pressure-put in what your doctor has prescribed for you)
  3. Altitude (1, 2, or 3-I believe 2 and 3 are for higher altitudes; I just leave mine at 1 since I’m at sea level)
  4. Fine Pressure Adjustment (I haven’t ever changed this)
  5. Ramp Time (This is great for fine tuning how long you want the Ramp time to be. I started out with the longest ramp time of 45 minutes and now after CPAPing for a while I’m down to 30 minutes. You shouldn’t have to go to the doctor to adjust this!)
  6. Ramp Start Pressure (My prescription is 7.0 cmH20 and I have my Ramp Start Pressure at 6.0. If you’re just starting out it may be easier to use a lower Pressure initially, maybe even the lowest setting then work your way higher if needed.)
  7. Mask Alert (This will send out some beeps if your mask comes during the night. I leave mine OFF since sometimes it’s hard for me to get back to sleep after waking up in the middle of the night.)
  8. Auto OFF (This doesn’t work as well as I want since it takes maybe 30 to 60 seconds for the machine to turn off, and it’s really loud. I usually reach over and just turn it off myself even though I have this feature on.)
  9. Patient Reminder (I don’t use this feature)

You can adjust the C-Flex feature without unlocking it, but it is also available in this unlocked menu.

This entry was posted on Monday, March 24th, 2008 at 11:48 pm and is filed under CPAP Settings/Adjustments. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

6 Responses to “Unlocking the Respironics REMstar M Series CPAP Machine”

  1. Thomas West Says:
    August 20th, 2008 at 8:40 pm

    I have a Remstar M Series, model 1022334. I tried your instructions as you outlined. Unfortunately, they don’t work. It just turns the machine on.

  2. anthony Says:
    November 20th, 2008 at 9:36 am

    Hi Thomas,

    I would definitely check with your medical provider since they will be able to make the proper adjustments to your cpap machine for you and they shouldn’t charge you. After all they provided the prescription so they should set up your machine.

    Also I noticed that the Remstar M Series, model 1022334 is the unit with the heated humidifier. Can you separate the humidifier from the CPAP unit itself? If so then you can try separating the two pieces and then following the instructions above. Not sure if it will work but it’s worth a shot.

  3. Leo Bach Says:
    April 28th, 2009 at 6:07 pm

    Thanks for publishing the combination to the RemStar “safe.” I have been using a CPAP for 8 years, and I have always found it necessary to be able to adjust the settings on my own.

    Just picked up a new RemStar M series with A-Flex today, and wanted to be sure I could make adjustments if necessary.

    Is there a process to exit the setup mode? On my old RemStar Plus, if you didn’t exit the setup, it just continued going around and around . . . kind of like the energizer bunny.

    Thanks again.

  4. laura Says:
    June 2nd, 2009 at 4:50 am

    Thank you! I can’t get into the doctor for a month and after losing 50 pounds sleeping with my CPAP at 9 was almost as bad as sleeping without it. I did not hear any beeps and the first display I saw was the pressure, which I was able to change with the + and – buttons. There was also a little “opened lock” icon so I knew the device was unlocked. I then turned my CPAP off and on and presto! New pressure. Thank you so much!

  5. CPAP-Reviews.com Says:
    June 2nd, 2009 at 12:08 pm

    Great to hear! CPAP has definitely improved the quality of my sleep and I hope you will be able to reap the benefits too. My doctor also told me that losing weight wouldn’t hurt, so it’s possible that after you’ve lost so much weight you don’t even need CPAP anymore. If you have some time you might want to take that sleep apnea test again to see if CPAP therapy is still required. (I go to Kaiser Permanente where there is a sleep lab that administers a take home test for sleep apnea) I only have “mild” sleep apnea but I use my CPAP machine every night.

  6. Dean Says:
    October 17th, 2009 at 11:02 am

    Thanks for this info. I just got a used CPAP and had no idea how to set the pressure setting. Thank you Thank you!!

    I have bookmarked and printed this page. :)

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