Post Reply 
Respironics Auto BiPap "Surging" When I Inhale
Author Message
Checkerboard Offline

New Members

Posts: 2
Joined: May 2013

Machine: Respironics Bipap pro 2
Mask Type: Nasal mask
Mask Make & Model: remstar mirage activa
Humidifier: none
CPAP Pressure: 13
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #1
Respironics Auto BiPap "Surging" When I Inhale
Hi All, I used my traveling Respironics Remstar Auto BiPap Pro 2 about two months ago, and when I put it away, I negelected to empty the water reservoir for the attached humidifier. The water got into several of the interior plastic tubes, and the next time I used the BiPap, it went in to error mode: E47.

Thanks to earlier posts on this forum, I was able to diagnose and then disassemble the BiPap Pro 2 in my hotel room. After clearing all the lines and drying out the flow sensor on the main circuit board, I managed to get the unit to power up and not go into error mode.

However, with my mask on, each inhalation is met with a "punch" or blast of air pressure that jolts the mask and makes it impossible to fall asleep. This surging is not normal: my inhalation pressure is 11.5, and my exhale is set to 7.5, with a Flex set to 3. Even with Flex set to zero, it still blasts me each time I inhale! The BiPap is essentially unusable.

I even unsoldered the Lithium battery from the main PC board, and waited 24 hours to allow the CMOS to clear (it still held my pressures in memory!), but I still have the surging problem. I'd like to buy (I guess) a new circuit board for the BiPap, but the only website I could find sells them for $489!

Could it be the Flow sensor, and is this single part ever sold to consumers? I'd hate to junk the unit and have to buy a new auto BiPap. Anyone else have this surging phenomenon? Thanks, Peter
06-02-2013 08:50 PM
Find all posts by this user Quote this message in a reply
trish6hundred Offline

Advisory Members

Posts: 3,154
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Nasal pillows
Mask Make & Model: Resmed AirFit P10 For Her
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #2
RE: Respironics Auto BiPap "Surging" When I Inhale
Hi Checkerboard,
WELCOME! to the forum.!
Sounds like the boards are quite expensive, maybe it would be just as advantageous to see if you could find a machine for just a little more than the circuit board.
Hopefully you can get your machine straightened out but hang in there for more responses to your post.

trish6hundred
06-02-2013 08:59 PM
Find all posts by this user Quote this message in a reply
vsheline Online

Advisory Members

Posts: 999
Joined: Jul 2012

Machine: S9 VPAP Adapt (USA Model# 36007, not better 36037)
Mask Type: Full face mask
Mask Make & Model: Quatro FX or F10 w/ Liner. MirageQuatro & Gecko gel pad
Humidifier: H5i
CPAP Pressure: 15 EPAP, PS 4-10
CPAP Software: ResScan

Other Comments: Marfan Syndrome, chronic bradycardia, occasional Cheyne-Stokes Respiration

Sex: Male
Location: California, USA

Post: #3
RE: Respironics Auto BiPap "Surging" When I Inhale
(06-02-2013 08:50 PM)Checkerboard Wrote:  However, with my mask on, each inhalation is met with a "punch" or blast of air pressure that jolts the mask and makes it impossible to fall asleep.
...
Anyone else have this surging phenomenon? Thanks, Peter

Hi Checkerboard, welcome to the forum!

My guess is something wrong with the pressure sensor, but I have no idea where to get one.

I have a friend who used an S9 AutoSet and last week reported the same symptom. Only on inhale, the pressure increases a lot, for no reason. Unplugging power for a while didn't fix it. Even restoring factory defaults and using only in CPAP mode with EPR turned off, the pressure still surges when inhaling.

He didn't get it wet or anything. (He does not use a humidifier.) It just started acting up out of the blue. Didn't drop it or anything like that. And he changed his air inlet filter monthly (although he got it second hand 9 months ago on Craigslist for $350 and does not know how often the original owner changed the filter), so probably no dust in the machine.

Unfortunately his S9 AutoSet is more than 27 months old, so no warrantee coverage. So he is looking for another S9 autoSet using Craigslist again.

Seems unlikely that the manufacturer would tell you what model pressure sensor was used, but I suppose it wouldn't hurt to call up Customer Service and ask for the part's manufacturer and original manufacturer's part number (not Respironic's assigned part number).

If you had the original manufacturer's part number and if the pressure sensor is a standard catalog item, you might be successful with a google search to try to locate the vendor and part. Maybe digikey (.com) might sell it, or some other electromechanical part supplier.

Good luck,
--- Vaughn

Advisory Members as a group provide advice and suggestions to Apnea Board administrators and staff concerning Apnea Board operation and administrative policies. Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
(This post was last modified: 06-02-2013 10:05 PM by vsheline.)
06-02-2013 10:05 PM
Find all posts by this user Quote this message in a reply
Shastzi Offline

Advisory Members

Posts: 910
Joined: Dec 2012

Machine: ResMed S9 Autoset
Mask Type: Full face mask
Mask Make & Model: FitLife Total face mask
Humidifier: F&P HC150 with Hybernite heated hose.
CPAP Pressure: 15cm-20cm H2O (auto)
CPAP Software: SleepyHead Other Software

Other Comments: CMS50-F wearable Oximeter; Software: SPO2 Assistant

Sex: Undisclosed
Location: Florida, USA.

Post: #4
RE: Respironics Auto BiPap "Surging" When I Inhale
I would imagine that it is a standard part. If you can get the number off it and google: air pressure sensor [your part number] you might just find it.

Good luck!

"With ordinary talent and extraordinary perseverance, all things are attainable." - Thomas Foxwell Buxton

Cool
06-03-2013 02:59 PM
Find all posts by this user Quote this message in a reply
Checkerboard Offline

New Members

Posts: 2
Joined: May 2013

Machine: Respironics Bipap pro 2
Mask Type: Nasal mask
Mask Make & Model: remstar mirage activa
Humidifier: none
CPAP Pressure: 13
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #5
RE: Respironics Auto BiPap "Surging" When I Inhale
Thanks very much to all for the support and suggestions! I'll keep looking for a cheap PC board or the OEM part for the Flow Sensor. Thanks again, Peter
06-03-2013 07:36 PM
Find all posts by this user Quote this message in a reply
MZig Offline

New Members

Posts: 2
Joined: Jun 2013

Machine: Respironics system one
Mask Type: Nasal pillows
Mask Make & Model: F/P opus
Humidifier: Res. sys one
CPAP Pressure: 4 - 12
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #6
RE: Respironics Auto BiPap "Surging" When I Inhale
I have exactly the same surging problem with a nearlY new Respironics System, One Auto. clinician tells me everything is working OK. But the blast or surge continues. Any ideas other than pressure sensor?
06-06-2013 08:50 PM
Find all posts by this user Quote this message in a reply
zonk Offline

Advisory Members

Posts: 6,634
Joined: Feb 2012

Machine: S9 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: H5i
CPAP Pressure: 9/14
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #7
RE: Respironics Auto BiPap "Surging" When I Inhale
(06-06-2013 08:50 PM)MZig Wrote:  I have exactly the same surging problem with a nearlY new Respironics System, One Auto. clinician tells me everything is working OK. But the blast or surge continues. Any ideas other than pressure sensor?
I don,t use the machine but sound like similar to the S9 central apnea detection, sending a small pulse of air during an apnea to determine whether the airways open or closed
06-06-2013 09:27 PM
Find all posts by this user Quote this message in a reply
racprops Offline

Preferred Members-2

Posts: 178
Joined: Mar 2013

Machine: Respironics DS950HS
Mask Type: Full face mask
Mask Make & Model: Respironics FitLife FFM
Humidifier: Respironics
CPAP Pressure: 7/15
CPAP Software: SleepyHead EncoreBasic

Other Comments:

Sex: Male
Location: Phoenix AZ

Post: #8
RE: Respironics Auto BiPap "Surging" When I Inhale
I am on a Respironics ASV machine and run into this kind of behavior as well.

In my case it seems to be caused by my changing breathing patterns, at first when I start I am taking faster and deeper breaths and as I relax I slow down and on my machine I feel it sees this as a breathing problem and tries to correct it.

I have found two cures, one is to catch up and slowly lower my breathing so that the auto setting will go along, or two I shut it down for a couple of seconds and restart and it will now follow my current breathing pattern, IF I don't over react due to the hardness of breathing during the shut down...which can cause me to take deep breaths again to catch my breath.

On my machine I have read it tracks 6 breaths per cycle so it take 6 breaths to change its mind so catch up and then slowly slow down a little for 6/8 breaths and it it has not started controlling you then do 8 more slightly slower etc until you can relax and breathe normally.

My two cents worth.

Rich
06-07-2013 04:34 AM
Find all posts by this user Quote this message in a reply
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  bipap pressure relief vs epr readyforsleep 20 293 Today 07:14 PM
Last Post: Galactus
  High Leak with Bipap on Trach luvkher 2 124 09-28-2014 11:56 PM
Last Post: luvkher
  Quick help please --S9 VPAP Adapt or Respironics auto Bi SV? jcarerra 55 1,634 09-28-2014 04:27 AM
Last Post: jcarerra
  clearing bipap machine rmanifold 6 200 09-25-2014 01:15 PM
Last Post: PaytonA
  What is the quietest BiPAP machine? Tom in RI 14 466 09-17-2014 05:23 PM
Last Post: archangle
  ASV Respironics 960 SD Card and Graphs TokenGuy 3 259 09-17-2014 03:38 AM
Last Post: archangle
  [Equipment] Question on Respironics lineup OMyMyOHellYes 7 432 09-06-2014 05:21 AM
Last Post: Brian E

Forum Jump:

Who's Online (Complete List)